| Abelmoschus esculentus (L.) Moench | 1300 images |
| Abies balsamea (L.) Mill. | 947 images |
| Abies fraseri (Pursh) Poir. | 60 images |
| Abildgaardia ovata (Burm.f.) Kral | 9 images |
| Abrus precatorius L. | 400 images |
| Abutilon grandiflorum G.Don | 82 images |
| Abutilon hirtum (Lam.) Sweet | 88 images |
| Abutilon theophrasti Medik. | 2889 images |
| Acacia auriculiformis A.Cunn. ex Benth. | 181 images |
| Acacia baileyana F.Muell. | 660 images |
| Acacia melanoxylon R.Br. | 1200 images |
| Acacia saligna (Labill.) H.L.Wendl. | 733 images |
| Acaciella angustissima (Mill.) Britton & Rose | 68 images |
| Acalypha alopecuroidea Jacq. | 161 images |
| Acalypha arvensis Poepp. | 47 images |
| Acalypha chamaedrifolia (Lam.) Müll.Arg. | 8 images |
| Acalypha herzogiana Pax & K.Hoffm. | 26 images |
| Acalypha poiretii Spreng. | 8 images |
| Acalypha rhomboidea Raf. | 3 images |
| Acalypha setosa A.Rich. | 31 images |
| Acalypha virginica L. | 987 images |
| Acalypha wilkesiana Müll.Arg. | 2254 images |
| Acanthocereus tetragonus (L.) Hummelinck | 1994 images |
| Acanthospermum australe (Loefl.) Kuntze | 91 images |
| Acanthospermum hispidum DC. | 112 images |
| Acer negundo L. | 16115 images |
| Acer pensylvanicum L. | 783 images |
| Acer platanoides L. | 16306 images |
| Acer pseudoplatanus L. | 21655 images |
| Acer rubrum L. | 5858 images |
| Acer saccharinum L. | 7576 images |
| Acer saccharum Marshall | 1653 images |
| Acer spicatum Lam. | 423 images |
| Achillea millefolium L. | 25076 images |
| Achillea ptarmica L. | 3193 images |
| Achyranthes aspera L. | 886 images |
| Achyranthes bidentata Blume | 25 images |
| Acicarpha tribuloides Juss. | 34 images |
| Acmella pusilla (Hook. & Arn.) R.K.Jansen | 12 images |
| Acmispon americanus (Nutt.) Rydb. | 26 images |
| Acoelorraphe wrightii (Griseb. & H.Wendl.) H.Wendl. ex Becc. | 40 images |
| Aconitum uncinatum L. | 10 images |
| Acorus calamus L. | 626 images |
| Acorus gramineus Aiton | 87 images |
| Acrostichum aureum L. | 271 images |
| Acrostichum danaeifolium Langsd. & Fisch. | 9 images |
| Actaea cordifolia DC. | 1 images |
| Actaea pachypoda Elliott | 795 images |
| Actaea racemosa L. | 599 images |
| Actinidia chinensis Planch. | 2974 images |
| Actinostachys pennula (Sw.) Hook. | 45 images |
| Adenanthera pavonina L. | 289 images |
| Adiantum capillus-veneris L. | 3069 images |
| Adiantum caudatum L. | 24 images |
| Adiantum hispidulum Sw. | 295 images |
| Adiantum pedatum L. | 554 images |
| Adiantum tenerum Sw. | 20 images |
| Adiantum trapeziforme L. | 68 images |
| Adiantum villosum L. | 4 images |
| Adlumia fungosa (Aiton) Britton, Sterns & Poggenb. | 8 images |
| Adonis annua L. | 827 images |
| Aegilops cylindrica Host | 56 images |
| Aegilops geniculata Roth | 895 images |
| Aegilops triuncialis L. | 143 images |
| Aegopodium podagraria L. | 11405 images |
| Aeschynomene americana L. | 153 images |
| Aeschynomene fluitans Peter | 2 images |
| Aeschynomene indica L. | 46 images |
| Aeschynomene rudis Benth. | 16 images |
| Aesculus × bushii C.K.Schneid. | 13 images |
| Aesculus × neglecta Lindl. | 7 images |
| Aesculus flava Sol. | 249 images |
| Aesculus glabra Willd. | 892 images |
| Aesculus hippocastanum L. | 16782 images |
| Aesculus parviflora Walter | 1108 images |
| Aesculus pavia L. | 1469 images |
| Aesculus sylvatica W.Bartram | 8 images |
| Aethusa cynapium L. | 1792 images |
| Agalinis aspera (Douglas ex Benth.) Britton | 1 images |
| Agalinis filifolia (Nutt.) Raf. | 2 images |
| Agalinis maritima (Raf.) Raf. | 6 images |
| Agalinis oligophylla Pennell | 2 images |
| Agalinis purpurea (L.) Pennell | 165 images |
| Agalinis skinneriana (Alph.Wood ex A.Gray) Britton | 8 images |
| Agalinis tenuifolia (Vahl) Raf. | 101 images |
| Agarista populifolia (Lam.) Judd | 3 images |
| Agastache foeniculum (Pursh) Kuntze | 1804 images |
| Agastache nepetoides (L.) Kuntze | 63 images |
| Agastache scrophulariifolia (Willd.) Kuntze | 19 images |
| Agave decipiens Baker | 17 images |
| Agave demeesteriana Jacobi | 330 images |
| Agave sisalana Perrine | 1122 images |
| Agave virginica L. | 54 images |
| Agave weberi J.F.Cels ex J.Poiss. | 12 images |
| Ageratina altissima (L.) R.M.King & H.Rob. | 1084 images |
| Ageratina aromatica (L.) Spach | 506 images |
| Ageratina jucunda (Greene) Clewell & Wooten | 13 images |
| Ageratum conyzoides L. | 555 images |
| Ageratum houstonianum Mill. | 3082 images |
| Agrimonia eupatoria L. | 10680 images |
| Agrimonia gryposepala Wallr. | 308 images |
| Agrimonia pubescens Wallr. | 20 images |
| Agrimonia rostellata Wallr. | 29 images |
| Agrimonia striata Michx. | 18 images |
| Agropyron cristatum (L.) Gaertn. | 108 images |
| Agrostemma githago L. | 3762 images |
| Agrostis canina L. | 50 images |
| Agrostis capillaris L. | 1545 images |
| Agrostis exarata Trin. | 11 images |
| Agrostis gigantea Roth | 134 images |
| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | 4 images |
| Agrostis mertensii Trin. | 10 images |
| Agrostis perennans (Walter) Tuck. | 4 images |
| Agrostis scabra Willd. | 2 images |
| Agrostis stolonifera L. | 360 images |
| Ailanthus altissima (Mill.) Swingle | 11650 images |
| Aira caryophyllea L. | 430 images |
| Aira elegans Willd. ex Roem. & Schult. | 63 images |
| Aira praecox L. | 100 images |
| Ajuga chamaepitys (L.) Schreb. | 975 images |
| Ajuga genevensis L. | 4007 images |
| Ajuga reptans L. | 21586 images |
| Akebia quinata (Thunb. ex Houtt.) Decne. | 1121 images |
| Albizia julibrissin Durazz. | 12663 images |
| Albuca bracteata (Thunb.) J.C.Manning & Goldblatt | 421 images |
| Alcea rosea L. | 14463 images |
| Alcea rugosa Alef. | 3 images |
| Alchemilla arvensis (L.) Scop. | 466 images |
| Alchemilla australis (Rydb.) Bomble | 54 images |
| Aldrovanda vesiculosa L. | 23 images |
| Aletris aurea Walter | 3 images |
| Aletris farinosa L. | 19 images |
| Aletris lutea Small | 5 images |
| Aleurites moluccanus (L.) Willd. | 337 images |
| Alisma subcordatum Raf. | 28 images |
| Alkekengi officinarum Moench | 4383 images |
| Alliaria petiolata (M.Bieb.) Cavara & Grande | 30719 images |
| Allium ampeloprasum L. | 6120 images |
| Allium canadense L. | 316 images |
| Allium cepa L. | 2327 images |
| Allium cernuum Roth | 234 images |
| Allium drummondii Regel | 54 images |
| Allium neapolitanum Cirillo | 3339 images |
| Allium oleraceum L. | 647 images |
| Allium sativum L. | 1217 images |
| Allium schoenoprasum L. | 4342 images |
| Allium speculae Ownbey & Aase | 1 images |
| Allium stellatum Nutt. ex Ker Gawl. | 19 images |
| Allium tricoccum Aiton | 394 images |
| Allium tuberosum Rottler ex Spreng. | 1271 images |
| Allium vineale L. | 3225 images |
| Alnus alnobetula (Ehrh.) K.Koch | 1598 images |
| Alnus glutinosa (L.) Gaertn. | 15102 images |
| Alnus incana (L.) Moench | 2461 images |
| Alnus maritima (Marshall) Muhl. ex Nutt. | 4 images |
| Alnus serrulata (Aiton) Willd. | 130 images |
| Aloe × schimperi Tod. | 5 images |
| Aloe vera (L.) Burm.f. | 10367 images |
| Alopecurus aequalis Sobol. | 119 images |
| Alopecurus arundinaceus Poir. | 36 images |
| Alopecurus carolinianus Walter | 3 images |
| Alopecurus geniculatus L. | 112 images |
| Alopecurus myosuroides Huds. | 506 images |
| Alopecurus pratensis L. | 2728 images |
| Alpinia zerumbet (Pers.) B.L.Burtt & R.M.Sm. | 1853 images |
| Alstroemeria psittacina Lehm. | 83 images |
| Alternanthera bettzickiana (Regel) G.Nicholson | 786 images |
| Alternanthera brasiliana (L.) Kuntze | 2032 images |
| Alternanthera caracasana Kunth | 133 images |
| Alternanthera flavescens Kunth | 26 images |
| Alternanthera littoralis P.Beauv. | 23 images |
| Alternanthera paronychioides A.St.-Hil. | 57 images |
| Alternanthera philoxeroides (Mart.) Griseb. | 337 images |
| Alternanthera pungens Kunth | 146 images |
| Alternanthera sessilis (L.) R.Br. ex DC. | 477 images |
| Althaea cannabina L. | 1421 images |
| Althaea officinalis L. | 3242 images |
| Alvaradoa amorphoides Liebm. | 33 images |
| Alysicarpus vaginalis (L.) DC. | 201 images |
| Alyssum alyssoides (L.) L. | 1035 images |
| Amaranthus albus L. | 492 images |
| Amaranthus blitoides S.Watson | 496 images |
| Amaranthus blitum L. | 2196 images |
| Amaranthus cannabinus (L.) J.D.Sauer | 2 images |
| Amaranthus caudatus L. | 3554 images |
| Amaranthus crassipes Schltdl. | 2 images |
| Amaranthus cruentus L. | 1053 images |
| Amaranthus deflexus L. | 1721 images |
| Amaranthus greggii S.Watson | 1 images |
| Amaranthus hybridus L. | 1403 images |
| Amaranthus hypochondriacus L. | 1205 images |
| Amaranthus muricatus (Gillies ex Moq.) Hieron. | 99 images |
| Amaranthus palmeri S.Watson | 117 images |
| Amaranthus polygonoides L. | 18 images |
| Amaranthus powellii S.Watson | 81 images |
| Amaranthus pumilus Raf. | 5 images |
| Amaranthus retroflexus L. | 8285 images |
| Amaranthus spinosus L. | 1282 images |
| Amaranthus thunbergii Moq. | 10 images |
| Amaranthus tortuosus Hornem. | 70 images |
| Amaranthus viridis L. | 1521 images |
| Amaryllis belladonna L. | 2878 images |
| Ambrosia artemisiifolia L. | 4739 images |
| Ambrosia bidentata Michx. | 20 images |
| Ambrosia confertiflora DC. | 19 images |
| Ambrosia hispida Pursh | 10 images |
| Ambrosia psilostachya DC. | 359 images |
| Ambrosia tenuifolia Spreng. | 51 images |
| Ambrosia trifida L. | 975 images |
| Amelanchier arborea (F.Michx.) Fernald | 31 images |
| Amelanchier canadensis (L.) Medik. | 2312 images |
| Amelanchier laevis Wiegand | 173 images |
| Amelanchier obovalis (Michx.) Ashe | 2 images |
| Amelanchier stolonifera Wiegand | 7 images |
| Amianthium muscitoxicum (Walter) A.Gray | 20 images |
| Ammannia auriculata Willd. | 13 images |
| Ammannia coccinea Rottb. | 47 images |
| Ammannia latifolia L. | 15 images |
| Ammannia robusta Heer & Regel | 5 images |
| Ammi majus L. | 1782 images |
| Amorpha canescens Pursh | 209 images |
| Amorpha fruticosa L. | 1871 images |
| Amorpha herbacea Walter | 1 images |
| Amorpha ouachitensis Wilbur | 4 images |
| Ampelaster carolinianus (Walter) G.L.Nesom | 13 images |
| Ampelopsis aconitifolia Bunge | 36 images |
| Ampelopsis cordata Michx. | 363 images |
| Ampelopsis glandulosa (Wall.) Momiy. | 117 images |
| Amphiachyris dracunculoides (DC.) Nutt. | 95 images |
| Amphicarpaea bracteata (L.) Fernald | 417 images |
| Amphitecna latifolia (Mill.) A.H.Gentry | 9 images |
| Amsinckia menziesii (Lehm.) A.Nelson & J.F.Macbr. | 211 images |
| Amsonia ciliata Walter | 94 images |
| Amsonia hubrichtii Woodson | 193 images |
| Amsonia tabernaemontana Walter | 680 images |
| Amyris balsamifera L. | 4 images |
| Amyris elemifera L. | 37 images |
| Anaphalis margaritacea (L.) Benth. & Hook.f. | 1292 images |
| Anchusa arvensis (L.) M.Bieb. | 2660 images |
| Anchusa azurea Mill. | 3047 images |
| Andersonglossum virginianum (L.) J.I.Cohen | 226 images |
| Andira inermis (W.Wright) DC. | 157 images |
| Andrographis echioides (L.) Nees | 2 images |
| Andropogon bicornis L. | 131 images |
| Andropogon gerardi Vitman | 181 images |
| Andropogon glomeratus (Walter) Britton, Sterns & Poggenb. | 6 images |
| Andropogon gyrans Ashe | 9 images |
| Andropogon ternarius Michx. | 32 images |
| Andropogon virginicus L. | 3 images |
| Androsace occidentalis Pursh | 5 images |
| Anemia adiantifolia (L.) Sw. | 4 images |
| Anemonastrum canadense (L.) Mosyakin | 847 images |
| Anemone berlandieri Pritz. | 153 images |
| Anemone caroliniana Walter | 9 images |
| Anemone virginiana L. | 317 images |
| Anemonella thalictroides (L.) Spach | 379 images |
| Anemonoides lancifolia (Pursh) Holub | 5 images |
| Anemonoides quinquefolia (L.) Holub | 1256 images |
| Anethum graveolens L. | 2458 images |
| Angadenia berteroi (A.DC.) Miers | 2 images |
| Angelica atropurpurea L. | 371 images |
| Angelica lucida L. | 44 images |
| Angelica triquinata Michx. | 29 images |
| Angelonia salicariifolia Bonpl. | 4 images |
| Aniseia martinicensis (Jacq.) Choisy | 17 images |
| Annona glabra L. | 290 images |
| Annona squamosa L. | 1133 images |
| Anoda cristata (L.) Schltdl. | 61 images |
| Anredera cordifolia (Ten.) Steenis | 977 images |
| Anredera vesicaria (Lam.) C.F.Gaertn. | 4 images |
| Antennaria howellii Greene | 21 images |
| Antennaria neglecta Greene | 180 images |
| Antennaria parlinii Fernald | 24 images |
| Antennaria plantaginifolia (L.) Hook. | 198 images |
| Antennaria solitaria Rydb. | 6 images |
| Antennaria virginica Stebbins | 4 images |
| Anthemis arvensis L. | 3845 images |
| Anthemis cotula L. | 1484 images |
| Anthoxanthum aristatum Boiss. | 54 images |
| Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp | 72 images |
| Anthoxanthum odoratum L. | 2197 images |
| Anthriscus caucalis M.Bieb. | 1695 images |
| Anthriscus cerefolium (L.) Hoffm. | 3001 images |
| Anthriscus sylvestris (L.) Hoffm. | 19270 images |
| Anthurium schlechtendalii Kunth | 159 images |
| Anticlea elegans (Pursh) Rydb. | 41 images |
| Antigonon leptopus Hook. & Arn. | 1399 images |
| Antirrhinum majus L. | 14587 images |
| Apera spica-venti (L.) P.Beauv. | 64 images |
| Apios americana Medik. | 295 images |
| Apium graveolens L. | 1877 images |
| Aplectrum hyemale (Muhl. ex Willd.) Torr. | 28 images |
| Apluda mutica L. | 13 images |
| Apocynum androsaemifolium L. | 995 images |
| Apocynum cannabinum L. | 877 images |
| Apteria aphylla (Nutt.) Barnhart ex Small | 3 images |
| Aquarius cordifolius (L.) Christenh. & Byng | 89 images |
| Aquarius grandiflorus (Cham. & Schltdl.) Christenh. & Byng | 110 images |
| Aquilegia canadensis L. | 1831 images |
| Aquilegia vulgaris L. | 20295 images |
| Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz | 2 images |
| Arabidopsis thaliana (L.) Heynh. | 2080 images |
| Arabis alpina L. | 1721 images |
| Arachis glabrata Benth. | 11 images |
| Arachis hypogaea L. | 858 images |
| Arachniodes simplicior (Makino) Ohwi | 40 images |
| Aralia elata (Miq.) Seem. | 738 images |
| Aralia hispida Vent. | 63 images |
| Aralia nudicaulis L. | 783 images |
| Aralia racemosa L. | 264 images |
| Aralia spinosa L. | 420 images |
| Araujia odorata (Hook. & Arn.) Fontella & Goyder | 22 images |
| Araujia sericifera Brot. | 3049 images |
| Arctium lappa L. | 9748 images |
| Arctium minus (Hill) Bernh. | 11307 images |
| Arctium tomentosum Mill. | 1892 images |
| Arctostaphylos uva-ursi (L.) Spreng. | 1999 images |
| Ardisia crenata Sims | 974 images |
| Ardisia elliptica Thunb. | 206 images |
| Ardisia escallonioides Schltdl. & Cham. | 16 images |
| Ardisia japonica (Thunb.) Blume | 11 images |
| Arenaria benthamii Fenzl ex Torr. & A.Gray | 1 images |
| Arenaria lanuginosa (Michx.) Rohrb. | 8 images |
| Arenaria serpyllifolia L. | 1293 images |
| Arethusa bulbosa L. | 42 images |
| Argemone albiflora Hornem. | 224 images |
| Argemone mexicana L. | 1099 images |
| Argyreia nervosa (Burm.f.) Bojer | 6 images |
| Arisaema dracontium (L.) Schott | 335 images |
| Arisaema triphyllum (L.) Schott | 2010 images |
| Aristida adscensionis L. | 125 images |
| Aristida purpurea Nutt. | 7 images |
| Aristida spiciformis Elliott | 1 images |
| Aristida stricta Michx. | 7 images |
| Aristolochia clematitis L. | 2821 images |
| Aristolochia littoralis Parodi | 701 images |
| Aristolochia macrophylla Lam. | 693 images |
| Aristolochia maxima Jacq. | 25 images |
| Aristolochia ringens Vahl | 87 images |
| Aristolochia serpentaria L. | 19 images |
| Aristolochia tomentosa Sims | 73 images |
| Armoracia rusticana G.Gaertn., B.Mey. & Scherb. | 240 images |
| Arnoglossum atriplicifolium (L.) H.Rob. | 78 images |
| Arnoglossum ovatum (Walter) H.Rob. | 1 images |
| Arnoglossum plantagineum Raf. | 47 images |
| Aronia × prunifolia (Marshall) Rehder | 18 images |
| Aronia arbutifolia (L.) Pers. | 146 images |
| Aronia melanocarpa (Michx.) Elliott | 2989 images |
| Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl | 1828 images |
| Artemisia abrotanum L. | 1318 images |
| Artemisia absinthium L. | 4740 images |
| Artemisia annua L. | 3416 images |
| Artemisia biennis Willd. | 132 images |
| Artemisia campestris L. | 1588 images |
| Artemisia ludoviciana Nutt. | 1100 images |
| Artemisia pontica L. | 73 images |
| Artemisia scoparia Waldst. & Kit. | 59 images |
| Artemisia stelleriana Besser | 171 images |
| Artemisia vulgaris L. | 16553 images |
| Arthraxon hispidus (Thunb.) Makino | 44 images |
| Arum italicum Mill. | 17249 images |
| Aruncus dioicus (Walter) Fernald | 4358 images |
| Arundinaria gigantea (Walter) Muhl. | 191 images |
| Arundinaria tecta (Walter) Muhl. | 2 images |
| Arundo donax L. | 2946 images |
| Asarum arifolium Michx. | 280 images |
| Asarum canadense L. | 593 images |
| Asarum contractum (H.L.Blomq.) Barringer | 3 images |
| Asarum heterophyllum Ashe | 1 images |
| Asarum virginicum L. | 35 images |
| Asclepias amplexicaulis Sm. | 51 images |
| Asclepias connivens Baldwin ex Elliott | 1 images |
| Asclepias curassavica L. | 2501 images |
| Asclepias curtissii A.Gray | 7 images |
| Asclepias exaltata L. | 95 images |
| Asclepias feayi Chapm. ex A.Gray | 5 images |
| Asclepias hirtella (Pennell) Woodson | 16 images |
| Asclepias humistrata Walter | 30 images |
| Asclepias incarnata L. | 1086 images |
| Asclepias lanceolata Walter | 7 images |
| Asclepias longifolia Michx. | 17 images |
| Asclepias michauxii Decne. | 1 images |
| Asclepias obovata Elliott | 2 images |
| Asclepias pedicellata Walter | 5 images |
| Asclepias perennis Walter | 44 images |
| Asclepias purpurascens L. | 517 images |
| Asclepias quadrifolia Jacq. | 89 images |
| Asclepias rubra L. | 9 images |
| Asclepias stenophylla A.Gray | 20 images |
| Asclepias sullivantii Engelm. ex A.Gray | 271 images |
| Asclepias syriaca L. | 3572 images |
| Asclepias tomentosa Elliott | 8 images |
| Asclepias tuberosa L. | 2187 images |
| Asclepias variegata L. | 134 images |
| Asclepias verticillata L. | 186 images |
| Asclepias viridiflora Raf. | 212 images |
| Asclepias viridis Walter | 514 images |
| Asemeia grandiflora (Walter) Small | 1 images |
| Asimina obovata (Willd.) Nash | 23 images |
| Asimina parviflora (Michx.) Dunal | 44 images |
| Asimina reticulata Shuttlew. ex Chapm. | 12 images |
| Asimina tetramera Small | 5 images |
| Asimina triloba (L.) Dunal | 1383 images |
| Asparagus aethiopicus L. | 1408 images |
| Asparagus officinalis L. | 3035 images |
| Asparagus setaceus (Kunth) Jessop | 3214 images |
| Asperugo procumbens L. | 406 images |
| Aspidistra elatior Blume | 1254 images |
| Aspidogyne querceticola (Lindl.) Meneguzzo | 19 images |
| Asplenium bradleyi D.C.Eaton | 1 images |
| Asplenium erosum L. | 2 images |
| Asplenium monanthes L. | 18 images |
| Asplenium montanum Willd. | 22 images |
| Asplenium pinnatifidum Nutt. | 3 images |
| Asplenium platyneuron (L.) Britton, Sterns & Poggenb. | 350 images |
| Asplenium pumilum Sw. | 4 images |
| Asplenium resiliens Kunze | 11 images |
| Asplenium rhizophyllum L. | 79 images |
| Asplenium ruta-muraria L. | 1886 images |
| Asplenium scolopendrium L. | 6112 images |
| Asplenium serratum L. | 56 images |
| Asplenium trichomanes L. | 5741 images |
| Aster tataricus L.f. | 40 images |
| Astilbe biternata (Vent.) Britton | 1 images |
| Astraea lobata (L.) Klotzsch | 81 images |
| Astragalus canadensis L. | 42 images |
| Astragalus crassicarpus Nutt. | 68 images |
| Astragalus hamosus L. | 576 images |
| Astragalus nuttallianus DC. | 16 images |
| Astranthium integrifolium Nutt. | 9 images |
| Asystasia gangetica (L.) T.Anderson | 1812 images |
| Asystasia intrusa (Forssk.) Blume | 6 images |
| Atalantia buxifolia (Poir.) Oliv. ex Benth. | 13 images |
| Athyrium niponicum (Mett.) Hance | 202 images |
| Atocion armeria (L.) Raf. | 2691 images |
| Atriplex hortensis L. | 1033 images |
| Atriplex lampa (Moq.) Gillies ex D.Dietr. | 7 images |
| Atriplex littoralis L. | 287 images |
| Atriplex patula L. | 697 images |
| Atriplex prostrata Boucher ex DC. | 1283 images |
| Atriplex rosea L. | 38 images |
| Atriplex semibaccata R.Br. | 95 images |
| Atriplex tatarica L. | 116 images |
| Aucuba japonica Thunb. | 5963 images |
| Aureolaria flava (L.) Farw. | 50 images |
| Aureolaria grandiflora (Benth.) Pennell | 53 images |
| Aureolaria levigata (Raf.) Raf. | 6 images |
| Aureolaria pectinata (Nutt.) Pennell | 28 images |
| Aureolaria virginica (L.) Pennell | 34 images |
| Aurinia saxatilis (L.) Desv. | 2758 images |
| Avena fatua L. | 2464 images |
| Avena sativa L. | 3640 images |
| Avenella flexuosa (L.) Drejer | 434 images |
| Avenula pubescens (Huds.) Dumort. | 105 images |
| Avicennia germinans (L.) L. | 431 images |
| Axonopus compressus (Sw.) P.Beauv. | 210 images |
| Axonopus fissifolius (Raddi) Kuhlm. | 345 images |
| Azolla caroliniana Willd. | 14 images |
| Azolla filiculoides Lam. | 355 images |
| Baccharis angustifolia Michx. | 6 images |
| Baccharis halimifolia L. | 1530 images |
| Bacopa caroliniana (Walter) B.L.Rob. | 10 images |
| Bacopa egensis (Poepp.) Pennell | 5 images |
| Bacopa monnieri (L.) Wettst. | 196 images |
| Bacopa repens (Sw.) Wettst. | 126 images |
| Bacopa rotundifolia (Michx.) Wettst. | 6 images |
| Balduina uniflora Nutt. | 7 images |
| Ballota nigra L. | 4853 images |
| Bambusa multiplex (Lour.) Raeusch. ex Schult.f. | 114 images |
| Bambusa vulgaris Schrad. ex J.C.Wendl. | 181 images |
| Baptisia alba (L.) R.Br. | 116 images |
| Baptisia albescens Small | 1 images |
| Baptisia australis (L.) R.Br. | 974 images |
| Baptisia lanceolata (Walter) Elliott | 2 images |
| Baptisia lecontei Torr. & A.Gray | 2 images |
| Baptisia nuttalliana Small | 48 images |
| Baptisia perfoliata (L.) R.Br. | 5 images |
| Baptisia sphaerocarpa Nutt. | 138 images |
| Baptisia tinctoria (L.) R.Br. | 46 images |
| Barbarea verna (Mill.) Asch. | 1422 images |
| Barbarea vulgaris W.T.Aiton | 996 images |
| Barleria cristata L. | 698 images |
| Barleria lupulina Lindl. | 126 images |
| Barleria repens Nees | 185 images |
| Bartonia verna (Michx.) Raf. ex Barton | 2 images |
| Basella alba L. | 791 images |
| Bassia scoparia (L.) A.J.Scott | 398 images |
| Batis maritima L. | 49 images |
| Bauhinia variegata L. | 2824 images |
| Begonia cucullata Willd. | 8432 images |
| Begonia hirtella Link | 520 images |
| Bejaria racemosa Vent. | 14 images |
| Bellardia trixago (L.) All. | 2644 images |
| Bellis perennis L. | 14483 images |
| Berberis bealei Fortune | 752 images |
| Berberis canadensis Mill. | 10 images |
| Berberis julianae C.K.Schneid. | 3019 images |
| Berberis thunbergii DC. | 8603 images |
| Berberis vulgaris L. | 5043 images |
| Berchemia scandens (Hill) K.Koch | 5 images |
| Berlandiera betonicifolia (Hook.) Small | 4 images |
| Berlandiera pumila Nutt. | 6 images |
| Berlandiera subacaulis (Nutt.) Nutt. | 17 images |
| Berteroa incana (L.) DC. | 4606 images |
| Berula erecta (Huds.) Coville | 770 images |
| Beta vulgaris L. | 8743 images |
| Betula alleghaniensis Britton | 237 images |
| Betula cordifolia Regel | 4 images |
| Betula lenta L. | 119 images |
| Betula nigra L. | 742 images |
| Betula papyrifera Marshall | 445 images |
| Betula populifolia Marshall | 60 images |
| Betula pubescens Ehrh. | 5153 images |
| Bidens alba (L.) DC. | 257 images |
| Bidens aristosa (Michx.) Britton | 132 images |
| Bidens bipinnata L. | 1247 images |
| Bidens cernua L. | 469 images |
| Bidens connata Muhl. ex Willd. | 59 images |
| Bidens frondosa L. | 2736 images |
| Bidens pilosa L. | 2845 images |
| Bidens tripartita L. | 1089 images |
| Bidens vulgata Greene | 63 images |
| Bifora testiculata (L.) Spreng. | 56 images |
| Bigelowia nuttallii L.C.Anderson | 2 images |
| Bignonia capreolata L. | 524 images |
| Bischofia javanica Blume | 128 images |
| Blastania cerasiformis (Stocks) A.Meeuse | 6 images |
| Blechnum appendiculatum Willd. | 5 images |
| Blephilia ciliata (L.) Raf. ex Benth. | 72 images |
| Blephilia hirsuta (Pursh) Benth. | 81 images |
| Bletia patula Hook. | 2 images |
| Bletia purpurea (Lam.) A.DC. | 49 images |
| Bletia spicata (Walter) Sosa & M.W.Chase | 18 images |
| Blitum bonus-henricus (L.) Rchb. | 1410 images |
| Boehmeria cylindrica (L.) Sw. | 563 images |
| Boehmeria nivea (L.) Gaudich. | 193 images |
| Boerhavia coccinea Mill. | 169 images |
| Boerhavia diffusa L. | 500 images |
| Boerhavia erecta L. | 179 images |
| Bolboschoenus fluviatilis (Torr.) Soják | 3 images |
| Bolboschoenus maritimus (L.) Palla | 711 images |
| Boltonia asteroides L'Hér. | 3 images |
| Bonamia grandiflora (A.Gray) Hallier f. | 2 images |
| Bonellia macrocarpa (Cav.) B.Ståhl & Källersjö | 26 images |
| Bonnaya antipoda (L.) Druce | 19 images |
| Bonnaya ciliata (Colsm.) Spreng. | 7 images |
| Bontia daphnoides L. | 75 images |
| Borago officinalis L. | 18967 images |
| Borodinia laevigata (Muhl. ex Willd.) P.J.Alexander & Windham | 4 images |
| Borrichia arborescens (L.) DC. | 47 images |
| Borrichia frutescens (L.) DC. | 135 images |
| Bothriochloa barbinodis (Lag.) Herter | 441 images |
| Bothriochloa bladhii (Retz.) S.T.Blake | 5 images |
| Bothriochloa ischaemum (L.) Keng | 518 images |
| Bothriochloa laguroides (DC.) Herter | 15 images |
| Bothriochloa pertusa (L.) A.Camus | 3 images |
| Botrychium dissectum Spreng. | 150 images |
| Botrychium multifidum (S.G.Gmel.) Rupr. | 2 images |
| Botrychium simplex E.Hitchc. | 48 images |
| Botrychium virginianum (L.) Sw. | 215 images |
| Bouchea prismatica (L.) Kuntze | 32 images |
| Bourreria succulenta Jacq. | 116 images |
| Bouteloua aristidoides (Kunth) Griseb. | 3 images |
| Bouteloua barbata Lag. | 1 images |
| Bouteloua curtipendula (Michx.) Torr. | 114 images |
| Bouteloua gracilis (Kunth) Lag. ex Griffiths | 53 images |
| Bouteloua rigidiseta (Steud.) Hitchc. | 21 images |
| Bowlesia incana Ruiz & Pav. | 325 images |
| Boykinia aconitifolia Nutt. | 4 images |
| Brachypodium sylvaticum (Huds.) P.Beauv. | 1320 images |
| Bradburia pilosa (Nutt.) Semple | 9 images |
| Brasenia schreberi J.F.Gmel. | 4 images |
| Brasiliopuntia brasiliensis (Willd.) A.Berger | 684 images |
| Brassia caudata (L.) Lindl. | 239 images |
| Brassica juncea (L.) Czern. | 1308 images |
| Brassica napus L. | 9397 images |
| Brassica oleracea L. | 8268 images |
| Brassica rapa L. | 3698 images |
| Breynia disticha J.R.Forst. & G.Forst. | 818 images |
| Brickellia cordifolia Elliott | 3 images |
| Brickellia eupatorioides (L.) Shinners | 77 images |
| Brickellia grandiflora (Hook.) Nutt. | 8 images |
| Brintonia discoidea (Elliott) Greene | 3 images |
| Briza maxima L. | 1815 images |
| Briza media L. | 897 images |
| Briza minor L. | 322 images |
| Bromelia pinguin L. | 284 images |
| Bromus arvensis L. | 139 images |
| Bromus catharticus Vahl | 398 images |
| Bromus commutatus Schrad. | 95 images |
| Bromus diandrus Roth | 1293 images |
| Bromus erectus Huds. | 951 images |
| Bromus hordeaceus L. | 2695 images |
| Bromus inermis Leyss. | 664 images |
| Bromus kalmii A.Gray | 1 images |
| Bromus lanceolatus Roth | 65 images |
| Bromus latiglumis (Shear) Hitchc. | 2 images |
| Bromus madritensis L. | 486 images |
| Bromus pubescens Muhl. ex Willd. | 5 images |
| Bromus racemosus L. | 183 images |
| Bromus ramosus Huds. | 231 images |
| Bromus rigidus Roth | 14 images |
| Bromus rubens L. | 346 images |
| Bromus scoparius L. | 12 images |
| Bromus secalinus L. | 228 images |
| Bromus squarrosus L. | 97 images |
| Bromus sterilis L. | 2608 images |
| Bromus tectorum L. | 387 images |
| Brosimum alicastrum Sw. | 111 images |
| Broussonetia papyrifera (L.) L'Hér. ex Vent. | 2206 images |
| Brugmansia suaveolens (Humb. & Bonpl. ex Willd.) Sweet | 44 images |
| Bruguiera gymnorhiza (L.) Lam. ex Savigny | 48 images |
| Brunnera macrophylla (Adams) I.M.Johnst. | 4153 images |
| Brunnichia ovata (Walter) Shinners | 20 images |
| Buchnera pusilla Kunth | 29 images |
| Buckleya distichophylla (Nutt.) Torr. | 5 images |
| Buddleja davidii Franch. | 16473 images |
| Buddleja indica Lam. | 4 images |
| Buddleja lindleyana Fortune | 87 images |
| Buddleja madagascariensis Lam. | 140 images |
| Buglossoides arvensis (L.) I.M.Johnst. | 1124 images |
| Bulbophyllum pinelianum (A.Rich.) Ormerod | 11 images |
| Bulbostylis barbata (Rottb.) C.B.Clarke | 13 images |
| Bulbostylis capillaris (L.) Kunth ex C.B.Clarke | 2 images |
| Bunias erucago L. | 1105 images |
| Bupleurum gerardi All. | 1 images |
| Bupleurum lancifolium Hornem. | 27 images |
| Bupleurum rotundifolium L. | 460 images |
| Burmannia capitata (Walter ex J.F.Gmel.) Mart. | 161 images |
| Bursera fagaroides (Kunth) Engl. | 36 images |
| Bursera simaruba (L.) Sarg. | 511 images |
| Buxus sempervirens L. | 9307 images |
| Byrsonima lucida (Mill.) DC. | 35 images |
| Cabomba caroliniana A.Gray | 61 images |
| Caesalpinia pulcherrima (L.) Sw. | 3080 images |
| Cajanus cajan (L.) Huth | 249 images |
| Cakile edentula (Bigelow) Hook. | 232 images |
| Cakile lanceolata (Willd.) O.E.Schulz | 2 images |
| Cakile maritima Scop. | 5963 images |
| Calamagrostis arenaria (L.) Roth | 1584 images |
| Calamagrostis breviligulata (Fernald) Saarela | 49 images |
| Calamagrostis canadensis (Michx.) P.Beauv. | 3 images |
| Calamagrostis purpurea (Trin.) Trin. | 24 images |
| Calanthe tankervilleae (Banks) M.W.Chase, Christenh. & Schuit. | 266 images |
| Calepina irregularis (Asso) Thell. | 1686 images |
| Calibrachoa parviflora (Juss.) D'Arcy | 2303 images |
| Calla palustris L. | 1321 images |
| Calliandra haematocephala Hassk. | 647 images |
| Callicarpa americana L. | 3290 images |
| Callicarpa dichotoma (Lour.) K.Koch | 200 images |
| Callicarpa japonica Thunb. | 179 images |
| Callirhoe bushii Fernald | 4 images |
| Callirhoe digitata Nutt. | 124 images |
| Callirhoe involucrata (Torr. & A.Gray) A.Gray | 44 images |
| Callisia fragrans (Lindl.) Woodson | 1687 images |
| Callisia repens (Jacq.) L. | 2840 images |
| Callisia rosea (Vent.) D.R.Hunt | 1 images |
| Callitriche hermaphroditica L. | 7 images |
| Callitriche heterophylla Pursh | 3 images |
| Callitriche palustris L. | 379 images |
| Callitriche stagnalis Scop. | 619 images |
| Callitriche terrestris Raf. | 5 images |
| Calluna vulgaris (L.) Hull | 8519 images |
| Calophyllum inophyllum L. | 610 images |
| Calopogon barbatus (Walter) Ames | 4 images |
| Calopogon multiflorus Lindl. | 5 images |
| Calopogon pallidus Chapm. | 2 images |
| Calopogon tuberosus (L.) Britton, Sterns & Poggenb. | 72 images |
| Calotropis procera (Aiton) W.T.Aiton | 860 images |
| Caltha palustris L. | 10387 images |
| Calycanthus floridus L. | 1967 images |
| Calycocarpum lyonii (Pursh) Nutt. ex A.Gray | 1 images |
| Calyptocarpus vialis Less. | 489 images |
| Calystegia sepium (L.) R.Br. | 9339 images |
| Calystegia silvatica (Kit.) Griseb. | 1413 images |
| Calystegia spithamaea (L.) Pursh | 18 images |
| Camassia angusta (Engelm. & A.Gray) Blank. | 5 images |
| Camassia scilloides (Raf.) Cory | 143 images |
| Camelina microcarpa Andrz. ex DC. | 99 images |
| Camelina sativa (L.) Crantz | 211 images |
| Camonea umbellata (L.) A.R.Simões & Staples | 250 images |
| Campanula divaricata Michx. | 27 images |
| Campanula persicifolia L. | 8935 images |
| Campanula rapunculoides L. | 4753 images |
| Campanulastrum americanum (L.) Small | 279 images |
| Campsis radicans (L.) Bureau | 6684 images |
| Campylocentrum pachyrrhizum (Rchb.f.) Rolfe | 3 images |
| Campyloneurum angustifolium (Sw.) Fée | 56 images |
| Campyloneurum brevifolium (Lodd. ex Link) Link | 10 images |
| Campyloneurum phyllitidis (L.) C.Presl | 21 images |
| Canavalia brasiliensis Mart. ex Benth. | 21 images |
| Canavalia ensiformis (L.) DC. | 45 images |
| Canavalia gladiata (Jacq.) DC. | 22 images |
| Canavalia rosea (Sw.) DC. | 588 images |
| Canella winterana (L.) Gaertn. | 71 images |
| Canna flaccida Salisb. | 45 images |
| Canna glauca L. | 165 images |
| Canna indica L. | 10778 images |
| Cannabis sativa L. | 5310 images |
| Cantinoa americana (Aubl.) Harley & J.F.B.Pastore | 21 images |
| Cantinoa mutabilis (Rich.) Harley & J.F.B.Pastore | 78 images |
| Caperonia castaneifolia (L.) A.St.-Hil. | 53 images |
| Caperonia palustris (L.) A.St.-Hil. | 63 images |
| Capnoides sempervirens (L.) Borkh. | 103 images |
| Capraria biflora L. | 106 images |
| Capsella bursa-pastoris (L.) Medik. | 9715 images |
| Capsicum annuum L. | 11735 images |
| Cardamine angustata O.E.Schulz | 10 images |
| Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. | 24 images |
| Cardamine concatenata (Michx.) O.Schwarz | 370 images |
| Cardamine diphylla (Michx.) Alph.Wood | 60 images |
| Cardamine douglassii Britton | 6 images |
| Cardamine flexuosa With. | 5290 images |
| Cardamine hirsuta L. | 3981 images |
| Cardamine impatiens L. | 1646 images |
| Cardamine occulta Hornem. | 7 images |
| Cardamine parviflora L. | 1877 images |
| Cardamine pensylvanica Muhl. ex Willd. | 4 images |
| Cardiocrinum cordatum (Thunb.) Makino | 11 images |
| Cardiospermum halicacabum L. | 1116 images |
| Carduus acanthoides L. | 3275 images |
| Carduus crispus L. | 667 images |
| Carduus nutans L. | 4379 images |
| Carduus pycnocephalus L. | 4352 images |
| Carex acutiformis Ehrh. | 1791 images |
| Carex albolutescens Schwein. | 5 images |
| Carex aquatilis Wahlenb. | 19 images |
| Carex arenaria L. | 263 images |
| Carex atherodes Spreng. | 5 images |
| Carex baileyi Britton | 1 images |
| Carex barrattii Torr. ex Schwein. | 1 images |
| Carex blanda Dewey | 31 images |
| Carex bromoides Willd. | 4 images |
| Carex brunnescens (Pers.) Poir. | 41 images |
| Carex bushii Mack. | 3 images |
| Carex buxbaumii Wahlenb. | 71 images |
| Carex canescens L. | 124 images |
| Carex careyana Torr. ex Dewey | 6 images |
| Carex caroliniana Schwein. | 1 images |
| Carex caryophyllea Latourr. | 682 images |
| Carex cephalophora Muhl. ex Willd. | 18 images |
| Carex cherokeensis Schwein. | 18 images |
| Carex comosa Boott | 41 images |
| Carex conjuncta Boott | 4 images |
| Carex crinita Lam. | 60 images |
| Carex crus-corvi Shuttlew. ex Kunze | 1 images |
| Carex decomposita Muhl. | 3 images |
| Carex diandra Schrank | 75 images |
| Carex distans L. | 166 images |
| Carex divisa Huds. | 145 images |
| Carex divulsa Stokes | 636 images |
| Carex eburnea Boott | 25 images |
| Carex echinata Murray | 261 images |
| Carex emoryi Dewey | 8 images |
| Carex extensa Gooden. | 112 images |
| Carex festucacea Willd. | 1 images |
| Carex flaccosperma Dewey | 20 images |
| Carex folliculata L. | 5 images |
| Carex frankii Kunth | 17 images |
| Carex gracillima Schwein. | 22 images |
| Carex granularis Muhl. ex Willd. | 5 images |
| Carex grayi J.Carey | 255 images |
| Carex grisea Wahlenb. | 17 images |
| Carex hamata Sw. | 4 images |
| Carex hirsutella Mack. | 13 images |
| Carex hirta L. | 771 images |
| Carex hirtifolia Mack. | 9 images |
| Carex hitchcockiana Dewey | 1 images |
| Carex hyalinolepis Steud. | 5 images |
| Carex hystericina Muhl. ex Willd. | 30 images |
| Carex intumescens Rudge | 109 images |
| Carex jamesii Schwein. | 8 images |
| Carex kobomugi Ohwi | 2 images |
| Carex lacustris Willd. | 10 images |
| Carex laevivaginata (Kük.) Mack. | 1 images |
| Carex lasiocarpa Ehrh. | 51 images |
| Carex laxiflora Lam. | 7 images |
| Carex leporina L. | 249 images |
| Carex limosa L. | 113 images |
| Carex longii Mack. | 13 images |
| Carex lupuliformis Sartwell ex Dewey | 8 images |
| Carex lupulina Muhl. ex Willd. | 82 images |
| Carex lurida Wahlenb. | 98 images |
| Carex meadii Dewey | 6 images |
| Carex mesochorea Mack. | 2 images |
| Carex michauxiana Boeckeler | 3 images |
| Carex microdonta Torr. | 1 images |
| Carex molesta Mack. | 3 images |
| Carex muehlenbergii Willd. | 3 images |
| Carex muricata L. | 77 images |
| Carex muskingumensis Schwein. | 114 images |
| Carex nigromarginata Schwein. | 3 images |
| Carex normalis Mack. | 13 images |
| Carex oligosperma Michx. | 8 images |
| Carex pallescens L. | 293 images |
| Carex pedunculata Muhl. ex Willd. | 21 images |
| Carex pensylvanica Lam. | 89 images |
| Carex picta Steud. | 16 images |
| Carex planostachys Kunze | 5 images |
| Carex plantaginea Lam. | 164 images |
| Carex platyphylla J.Carey | 3 images |
| Carex prairea Dewey ex Alph.Wood | 2 images |
| Carex pumila Thunb. | 26 images |
| Carex radiata (Wahlenb.) Small | 36 images |
| Carex rosea Willd. | 1 images |
| Carex sartwellii Dewey | 4 images |
| Carex scabrata Schwein. | 10 images |
| Carex shortiana Dewey & Torr. | 2 images |
| Carex sparganioides Muhl. ex Willd. | 18 images |
| Carex spicata Huds. | 357 images |
| Carex sprengelii Dewey ex Spreng. | 6 images |
| Carex squarrosa L. | 29 images |
| Carex sterilis Willd. | 3 images |
| Carex stipata Muhl. ex Willd. | 54 images |
| Carex straminea Willd. ex Schkuhr | 1 images |
| Carex stricta Lam. | 46 images |
| Carex swanii (Fernald) Mack. | 4 images |
| Carex sylvatica Huds. | 1311 images |
| Carex tenera Dewey | 8 images |
| Carex tetrastachya Scheele | 3 images |
| Carex torta Boott ex Tuck. | 2 images |
| Carex tribuloides Wahlenb. | 16 images |
| Carex trichocarpa Muhl. ex Willd. | 15 images |
| Carex typhina Michx. | 4 images |
| Carex utriculata Boott | 8 images |
| Carex vesicaria L. | 285 images |
| Carex virescens Muhl. ex Willd. | 5 images |
| Carex vulpinoidea Michx. | 110 images |
| Carex woodii Dewey | 2 images |
| Carica papaya L. | 5019 images |
| Carissa macrocarpa (Eckl.) A.DC. | 2687 images |
| Carpesium abrotanoides L. | 28 images |
| Carphephorus corymbosus (Nutt.) Torr. & A.Gray | 9 images |
| Carphephorus odoratissimus (J.F.Gmel.) H.J.-C.Hebert | 7 images |
| Carphephorus pseudoliatris Cass. | 3 images |
| Carphephorus tomentosus (Michx.) Torr. & A.Gray | 1 images |
| Carpinus caroliniana Walter | 370 images |
| Carpobrotus edulis (L.) N.E.Br. | 6493 images |
| Cartrema americana (L.) G.L.Nesom | 24 images |
| Carum carvi L. | 1209 images |
| Carya aquatica (F.Michx.) Nutt. ex Elliott | 14 images |
| Carya cordiformis (Wangenh.) K.Koch | 80 images |
| Carya glabra (Mill.) Sweet | 1966 images |
| Carya illinoinensis (Wangenh.) K.Koch | 799 images |
| Carya laciniosa (F.Michx.) G.Don | 25 images |
| Carya myristiciformis (F.Michx.) Nutt. ex Elliott | 3 images |
| Carya ovata (Mill.) K.Koch | 333 images |
| Carya pallida (Ashe) Engelm. & Graebn. | 21 images |
| Carya tomentosa (Lam.) Nutt. | 99 images |
| Casasia clusiifolia (Jacq.) Urb. | 7 images |
| Casearia nitida (L.) Jacq. | 6 images |
| Cassytha filiformis L. | 188 images |
| Castanea × neglecta Dode | 2 images |
| Castanea dentata (Marshall) Borkh. | 684 images |
| Castanea mollissima Blume | 62 images |
| Castanea pumila (L.) Mill. | 55 images |
| Castilleja coccinea (L.) Spreng. | 104 images |
| Castilleja indivisa Engelm. | 320 images |
| Casuarina cunninghamiana Miq. | 1911 images |
| Casuarina equisetifolia L. | 854 images |
| Casuarina glauca Sieber ex Spreng. | 55 images |
| Catabrosa aquatica (L.) P.Beauv. | 71 images |
| Catalpa bignonioides Walter | 13688 images |
| Catalpa ovata G.Don | 1221 images |
| Catalpa speciosa Teas | 444 images |
| Catapodium rigidum (L.) C.E.Hubb. | 369 images |
| Catharanthus roseus (L.) G.Don | 9945 images |
| Catopsis floribunda L.B.Sm. | 3 images |
| Caulophyllum thalictroides (L.) Michx. | 449 images |
| Causonis japonica (Thunb.) Raf. | 28 images |
| Cayaponia americana (Lam.) Cogn. | 23 images |
| Cayaponia quinqueloba (Raf.) Shinners | 4 images |
| Ceanothus americanus L. | 647 images |
| Ceanothus herbaceus Raf. | 31 images |
| Ceanothus microphyllus Michx. | 1 images |
| Celastrus orbiculatus Thunb. | 705 images |
| Celastrus scandens L. | 911 images |
| Celosia argentea L. | 9609 images |
| Celosia trigyna L. | 21 images |
| Celtis iguanaea (Jacq.) Sarg. | 113 images |
| Celtis laevigata Willd. | 538 images |
| Celtis occidentalis L. | 3544 images |
| Celtis pallida Torr. | 19 images |
| Celtis tenuifolia Nutt. | 37 images |
| Cenchrus × cupreus (Thorpe) Govaerts | 8 images |
| Cenchrus alopecuroides (L.) Thunb. | 590 images |
| Cenchrus americanus (L.) Morrone | 115 images |
| Cenchrus biflorus Roxb. | 65 images |
| Cenchrus ciliaris L. | 478 images |
| Cenchrus echinatus L. | 123 images |
| Cenchrus latifolius (Spreng.) Morrone | 8 images |
| Cenchrus longisetus M.C.Johnst. | 990 images |
| Cenchrus longispinus (Hack.) Fernald | 80 images |
| Cenchrus pedicellatus (Trin.) Morrone | 191 images |
| Cenchrus purpureus (Schumach.) Morrone | 438 images |
| Cenchrus setaceus (Forssk.) Morrone | 2655 images |
| Cenchrus setosus Sw. | 7 images |
| Cenchrus spinifex Cav. | 30 images |
| Cenchrus tribuloides L. | 1 images |
| Centaurea benedicta (L.) L. | 336 images |
| Centaurea calcitrapa L. | 1647 images |
| Centaurea cyanus L. | 15878 images |
| Centaurea depressa M.Bieb. | 10 images |
| Centaurea diffusa Lam. | 192 images |
| Centaurea jacea L. | 13819 images |
| Centaurea melitensis L. | 757 images |
| Centaurea nigra L. | 7752 images |
| Centaurea nigrescens Willd. | 689 images |
| Centaurea phrygia L. | 421 images |
| Centaurea scabiosa L. | 8044 images |
| Centaurea solstitialis L. | 1245 images |
| Centaurea stoebe L. | 749 images |
| Centaurium erythraea Rafn | 7163 images |
| Centaurium pulchellum (Sw.) Hayek ex Hand.-Mazz., Stadlm., Janch. & Faltis | 46 images |
| Centaurium tenuiflorum (Hoffmanns. & Link) Fritsch | 181 images |
| Centella asiatica (L.) Urb. | 1034 images |
| Centella erecta (L.f.) Fernald | 19 images |
| Centratherum punctatum Cass. | 510 images |
| Centrosema sagittatum (Humb. & Bonpl. ex Willd.) Brandegee | 20 images |
| Centrosema virginianum (L.) Benth. | 502 images |
| Cephalanthus occidentalis L. | 1229 images |
| Cerastium arvense L. | 4997 images |
| Cerastium brachypetalum Desp. ex Pers. | 62 images |
| Cerastium glomeratum Thuill. | 4521 images |
| Cerastium holosteoides Fr. | 8 images |
| Cerastium nutans Raf. | 7 images |
| Cerastium pumilum Curtis | 408 images |
| Cerastium semidecandrum L. | 478 images |
| Cerastium tomentosum L. | 6181 images |
| Ceratiola ericoides Michx. | 28 images |
| Ceratophyllum demersum L. | 295 images |
| Ceratopteris pteridoides (Hook.) Hieron. | 1 images |
| Ceratopteris richardii Brongn. | 1 images |
| Ceratopteris thalictroides (L.) Brongn. | 40 images |
| Cercis canadensis L. | 6241 images |
| Cestrum diurnum L. | 65 images |
| Chaenomeles japonica (Thunb.) Lindl. ex Spach | 10084 images |
| Chaenomeles speciosa (Sweet) Nakai | 7020 images |
| Chaenorhinum minus (L.) Lange | 640 images |
| Chaerophyllum bulbosum L. | 858 images |
| Chaerophyllum procumbens (L.) Crantz | 15 images |
| Chaerophyllum tainturieri Hook. & Arn. | 210 images |
| Chaiturus marrubiastrum (L.) Ehrh. ex Rchb. | 73 images |
| Chamaecrista fasciculata (Michx.) Greene | 819 images |
| Chamaecrista nictitans (L.) Moench | 209 images |
| Chamaecrista rotundifolia (Pers.) Greene | 60 images |
| Chamaecrista serpens (L.) Greene | 3 images |
| Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb. | 79 images |
| Chamaedaphne calyculata (L.) Moench | 156 images |
| Chamaedorea seifrizii Burret | 2174 images |
| Chamaelirium luteum (L.) A.Gray | 45 images |
| Chamaemelum nobile (L.) All. | 2563 images |
| Chaptalia tomentosa Vent. | 15 images |
| Chasmanthium latifolium (Michx.) H.O.Yates | 399 images |
| Chelidonium majus L. | 25392 images |
| Chelone glabra L. | 441 images |
| Chelone lyonii Pursh | 234 images |
| Chelone obliqua L. | 212 images |
| Chenopodiastrum murale (L.) S.Fuentes, Uotila & Borsch | 1382 images |
| Chenopodium album L. | 14581 images |
| Chenopodium berlandieri Moq. | 46 images |
| Chenopodium betaceum Andrz. | 5 images |
| Chenopodium ficifolium Sm. | 1322 images |
| Chenopodium opulifolium Schrad. ex W.D.J.Koch & Ziz | 6 images |
| Chenopodium pratericola Rydb. | 17 images |
| Chenopodium standleyanum Aellen | 3 images |
| Chenopodium vulvaria L. | 778 images |
| Chimaphila maculata (L.) Pursh | 750 images |
| Chimaphila umbellata (L.) W.P.C.Barton | 120 images |
| Chiococca alba (L.) Hitchc. | 168 images |
| Chionanthus pygmaeus Small | 10 images |
| Chionanthus virginicus L. | 650 images |
| Chloracantha spinosa (Benth.) G.L.Nesom | 5 images |
| Chloris barbata Sw. | 255 images |
| Chloris cucullata Bisch. | 5 images |
| Chloris gayana Kunth | 119 images |
| Chloris radiata (L.) Sw. | 14 images |
| Chloris truncata R.Br. | 6 images |
| Chloris verticillata Nutt. | 31 images |
| Chloris virgata Sw. | 65 images |
| Chondrilla juncea L. | 1897 images |
| Chorispora tenella (Pall.) DC. | 215 images |
| Chromolaena ivifolia (L.) R.M.King & H.Rob. | 7 images |
| Chromolaena odorata (L.) R.M.King & H.Rob. | 885 images |
| Chrozophora tinctoria (L.) A.Juss. | 397 images |
| Chrysobalanus icaco L. | 445 images |
| Chrysogonum virginianum L. | 185 images |
| Chrysophyllum oliviforme L. | 36 images |
| Chrysopogon aciculatus (Retz.) Trin. | 21 images |
| Chrysopogon zizanioides (L.) Roberty | 88 images |
| Chrysopsis floridana Small | 5 images |
| Chrysopsis mariana Elliott | 52 images |
| Chrysopsis scabrella Torr. & A.Gray | 4 images |
| Chrysopsis subulata Small | 9 images |
| Chrysosplenium americanum Schwein. ex Hook. | 24 images |
| Cicer arietinum L. | 871 images |
| Cichorium intybus L. | 19247 images |
| Cicuta bulbifera L. | 34 images |
| Cicuta maculata L. | 310 images |
| Cienfuegosia yucatanensis Millsp. | 6 images |
| Cinna arundinacea L. | 15 images |
| Cinnamomum camphora (L.) J.Presl | 1474 images |
| Circaea alpina L. | 253 images |
| Circaea canadensis (L.) Hill | 20 images |
| Cirsium altissimum (L.) Spreng. | 254 images |
| Cirsium arvense (L.) Scop. | 15244 images |
| Cirsium discolor (Muhl. ex Willd.) Spreng. | 197 images |
| Cirsium horridulum Michx. | 253 images |
| Cirsium muticum Michx. | 69 images |
| Cirsium nuttallii DC. | 6 images |
| Cirsium texanum Buckley | 230 images |
| Cirsium undulatum Spreng. | 121 images |
| Cirsium vulgare (Savi) Ten. | 19766 images |
| Cissampelos pareira L. | 116 images |
| Cissus trifoliata (L.) L. | 10 images |
| Cissus verticillata (L.) Nicolson & C.E.Jarvis | 593 images |
| Citrullus colocynthis (L.) Schrad. | 423 images |
| Citrullus lanatus (Thunb.) Matsum. & Nakai | 2220 images |
| Citrus × aurantiifolia (Christm.) Swingle | 1033 images |
| Citrus × aurantium L. | 8580 images |
| Citrus × limon (L.) Osbeck | 9477 images |
| Citrus medica L. | 976 images |
| Citrus trifoliata L. | 2505 images |
| Cladanthus mixtus (L.) Chevall. | 347 images |
| Cladium mariscoides (Muhl.) Torr. | 3 images |
| Cladium mariscus (L.) Pohl | 285 images |
| Cladrastis kentukea (Dum.Cours.) Rudd | 325 images |
| Claytonia caroliniana Michx. | 305 images |
| Claytonia perfoliata Donn ex Willd. | 3321 images |
| Claytonia virginica L. | 1203 images |
| Cleistesiopsis divaricata (L.) Pansarin & F.Barros | 3 images |
| Clematis crispa L. | 96 images |
| Clematis fremontii S.Watson | 4 images |
| Clematis occidentalis (Hornem.) DC. | 50 images |
| Clematis ochroleuca Aiton | 10 images |
| Clematis pitcheri Torr. & A.Gray | 3 images |
| Clematis terniflora DC. | 889 images |
| Clematis versicolor Small | 4 images |
| Clematis viorna L. | 76 images |
| Clematis virginiana L. | 808 images |
| Cleome aculeata L. | 47 images |
| Cleome dodecandra L. | 139 images |
| Cleome erosa (Nutt.) Eaton | 3 images |
| Cleome gynandra L. | 428 images |
| Cleome houtteana Schltdl. | 2414 images |
| Cleome ornithopodioides L. | 4 images |
| Cleome rutidosperma DC. | 463 images |
| Cleome serrata Jacq. | 47 images |
| Cleome speciosa Raf. | 176 images |
| Cleome spinosa Jacq. | 1025 images |
| Cleome viscosa L. | 463 images |
| Clerodendrum bungei Steud. | 1137 images |
| Clerodendrum chinense (Osbeck) Mabb. | 279 images |
| Clerodendrum indicum (L.) Kuntze | 207 images |
| Clerodendrum quadriloculare (Blanco) Merr. | 450 images |
| Clerodendrum speciosissimum Jacob-Makoy | 94 images |
| Clerodendrum thomsoniae Balf.f. | 2076 images |
| Clerodendrum trichotomum Thunb. | 3230 images |
| Clerodendrum umbellatum Poir. | 130 images |
| Clethra acuminata Michx. | 27 images |
| Clethra alnifolia L. | 868 images |
| Cliftonia monophylla (Lam.) Britton | 3 images |
| Clinopodium arkansanum (Nutt.) House | 1 images |
| Clinopodium brownei (Sw.) Kuntze | 24 images |
| Clinopodium glabellum (Michx.) Kuntze | 14 images |
| Clinopodium gracile (Benth.) Kuntze | 43 images |
| Clinopodium menthifolium (Host) Merino | 35 images |
| Clinopodium nepeta (L.) Kuntze | 5977 images |
| Clinopodium vulgare L. | 7331 images |
| Clintonia borealis (Aiton) Raf. | 684 images |
| Clintonia umbellulata (Michx.) Morong | 30 images |
| Clitoria mariana L. | 128 images |
| Clusia rosea Jacq. | 1603 images |
| Cnidoscolus texanus (Müll.Arg.) Small | 1 images |
| Coccinia grandis (L.) Voigt | 770 images |
| Coccoloba diversifolia Jacq. | 32 images |
| Coccoloba uvifera (L.) L. | 2202 images |
| Coccothrinax argentata (Jacq.) L.H.Bailey | 5 images |
| Cocculus carolinus (L.) DC. | 340 images |
| Cocos nucifera L. | 2470 images |
| Coincya monensis (L.) Greuter & Burdet | 315 images |
| Coix lacryma-jobi L. | 349 images |
| Colchicum autumnale L. | 6205 images |
| Coleataenia anceps (Michx.) Soreng | 3 images |
| Coleus amboinicus Lour. | 4062 images |
| Collinsia verna Nutt. | 71 images |
| Collinsia violacea Nutt. | 11 images |
| Collinsonia canadensis L. | 114 images |
| Colocasia esculenta (L.) Schott | 5129 images |
| Colubrina arborescens (Mill.) Sarg. | 25 images |
| Colubrina asiatica (L.) Brongn. | 45 images |
| Colubrina elliptica (Sw.) Brizicky & W.L.Stern | 16 images |
| Comandra umbellata (L.) Nutt. | 87 images |
| Combretum indicum (L.) DeFilipps | 1485 images |
| Commelina benghalensis L. | 748 images |
| Commelina caroliniana Walter | 8 images |
| Commelina communis L. | 1984 images |
| Commelina diffusa Burm.f. | 504 images |
| Commelina erecta L. | 1765 images |
| Commelina forskaolii Vahl | 106 images |
| Commelina virginica L. | 52 images |
| Comptonia peregrina (L.) Coult. | 189 images |
| Condea verticillata (Jacq.) Harley & J.F.B.Pastore | 17 images |
| Conium maculatum L. | 7616 images |
| Conocarpus erectus L. | 740 images |
| Conoclinium coelestinum DC. | 1121 images |
| Conopholis americana (L.) Wallr. | 313 images |
| Conradina canescens A.Gray | 9 images |
| Conradina grandiflora Small | 5 images |
| Conradina verticillata Jennison | 4 images |
| Conringia orientalis (L.) C.Presl | 2 images |
| Consolea macracantha (Griseb.) A.Berger | 4 images |
| Convallaria majalis L. | 7138 images |
| Convallaria pseudomajalis W.Bartram | 5 images |
| Convolvulus arvensis L. | 16228 images |
| Convolvulus equitans Benth. | 143 images |
| Coptis trifolia (L.) Salisb. | 249 images |
| Corallorhiza maculata Raf. | 311 images |
| Corallorhiza odontorhiza (Willd.) Nutt. | 1 images |
| Corallorhiza trifida Châtel. | 159 images |
| Corallorhiza wisteriana Conrad | 33 images |
| Corchorus aestuans L. | 121 images |
| Corchorus hirsutus L. | 7 images |
| Corchorus hirtus L. | 21 images |
| Corchorus siliquosus L. | 25 images |
| Cordia dichotoma G.Forst. | 272 images |
| Cordia myxa L. | 209 images |
| Cordia sebestena L. | 875 images |
| Coreopsis auriculata L. | 121 images |
| Coreopsis gladiata Walter | 15 images |
| Coreopsis grandiflora Hogg ex Sweet | 2488 images |
| Coreopsis lanceolata L. | 2663 images |
| Coreopsis leavenworthii Torr. & A.Gray | 37 images |
| Coreopsis major Walter | 127 images |
| Coreopsis nuecensis A.Heller | 15 images |
| Coreopsis palmata Nutt. | 64 images |
| Coreopsis pubescens Elliott | 22 images |
| Coreopsis rosea Nutt. | 5 images |
| Coreopsis tinctoria Nutt. | 3046 images |
| Coreopsis tripteris L. | 160 images |
| Coreopsis verticillata L. | 1826 images |
| Coriandrum sativum L. | 3129 images |
| Corispermum americanum (Nutt.) Nutt. | 2 images |
| Cornus alternifolia L.f. | 267 images |
| Cornus amomum Mill. | 561 images |
| Cornus asperifolia Michx. | 2 images |
| Cornus canadensis L. | 1337 images |
| Cornus drummondii C.A.Mey. | 16 images |
| Cornus florida L. | 5595 images |
| Cornus foemina Mill. | 37 images |
| Cornus kousa Bürger ex Hance | 2721 images |
| Cornus racemosa Lam. | 439 images |
| Cornus rugosa Lam. | 173 images |
| Cornus sericea L. | 7016 images |
| Coronilla varia L. | 8725 images |
| Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn. | 4002 images |
| Corydalis flavula (Raf.) DC. | 96 images |
| Corylus americana Walter | 65 images |
| Corylus cornuta Marshall | 1141 images |
| Corymbia torelliana (F.Muell.) K.D.Hill & L.A.S.Johnson | 50 images |
| Cosmos bipinnatus Cav. | 12879 images |
| Cosmos caudatus Kunth | 867 images |
| Cosmos parviflorus (Jacq.) Pers. | 30 images |
| Cosmos sulphureus Cav. | 3936 images |
| Cota tinctoria (L.) J.Gay | 1828 images |
| Cotinus obovatus Raf. | 328 images |
| Cotoneaster simonsii Baker | 61 images |
| Cotula australis Hook.f. | 220 images |
| Cotula coronopifolia L. | 486 images |
| Couroupita guianensis Aubl. | 1438 images |
| Cranichis muscosa Sw. | 9 images |
| Crassocephalum crepidioides (Benth.) S.Moore | 312 images |
| Crataegus calpodendron (Ehrh.) Medik. | 10 images |
| Crataegus coccinea L. | 169 images |
| Crataegus coccinioides Ashe | 19 images |
| Crataegus collina Chapm. | 4 images |
| Crataegus crus-galli L. | 636 images |
| Crataegus harbisonii Beadle | 53 images |
| Crataegus intricata Lange | 8 images |
| Crataegus macracantha Lodd. ex Loudon | 7 images |
| Crataegus macrosperma Ashe | 9 images |
| Crataegus marshallii Eggl. | 85 images |
| Crataegus mollis (Torr. & A.Gray) Scheele | 30 images |
| Crataegus monogyna Jacq. | 24900 images |
| Crataegus nitida (Engelm. ex Britton & N.E.Br.) Sarg. | 4 images |
| Crataegus pennsylvanica Ashe | 5 images |
| Crataegus persimilis Sarg. | 481 images |
| Crataegus phaenopyrum (L.f.) Medik. | 192 images |
| Crataegus pruinosa (H.L.Wendl.) K.Koch | 9 images |
| Crataegus punctata Jacq. | 73 images |
| Crataegus scabrida Sarg. | 5 images |
| Crataegus succulenta Schrad. ex Link | 14 images |
| Crataegus uniflora Münchh. | 16 images |
| Crataegus viridis L. | 29 images |
| Crepis biennis L. | 4334 images |
| Crepis capillaris (L.) Wallr. | 9042 images |
| Crepis foetida L. | 1910 images |
| Crepis pulchra L. | 824 images |
| Crepis setosa Haller f. | 2359 images |
| Crepis tectorum L. | 249 images |
| Crepis vesicaria L. | 3211 images |
| Crinum americanum L. | 340 images |
| Crinum asiaticum L. | 1557 images |
| Crinum bulbispermum (Burm.f.) Milne-Redh. & Schweick. | 372 images |
| Crinum zeylanicum (L.) L. | 13 images |
| Crocanthemum arenicola (Chapm.) Barnhart | 2 images |
| Crocanthemum bicknellii (Fernald) Janch. | 3 images |
| Crocanthemum carolinianum (Walter) Spach | 5 images |
| Crocanthemum corymbosum (Michx.) Britton | 11 images |
| Crocanthemum georgianum (Chapm.) Barnhart | 6 images |
| Crocanthemum rosmarinifolium (Pursh) Janch. | 2 images |
| Crocosmia × crocosmiiflora (Lemoine) N.E.Br. | 6238 images |
| Crocus flavus Weston | 1132 images |
| Crocus vernus (L.) Hill | 6027 images |
| Croptilon divaricatum (Nutt.) Raf. | 9 images |
| Crossopetalum rhacoma Crantz | 22 images |
| Crotalaria alata Buch.-Ham. ex D.Don | 15 images |
| Crotalaria brevidens Benth. | 67 images |
| Crotalaria incana L. | 210 images |
| Crotalaria lanceolata E.Mey. | 49 images |
| Crotalaria ochroleuca G.Don | 3 images |
| Crotalaria pallida Aiton | 391 images |
| Crotalaria pumila Ortega | 65 images |
| Crotalaria purshii DC. | 1 images |
| Crotalaria retusa L. | 598 images |
| Crotalaria sagittalis L. | 55 images |
| Crotalaria spectabilis Roth | 159 images |
| Crotalaria trichotoma Bojer | 19 images |
| Croton argyranthemus Michx. | 3 images |
| Croton capitatus Michx. | 208 images |
| Croton glandulosus L. | 73 images |
| Croton humilis L. | 3 images |
| Croton monanthogynus Michx. | 106 images |
| Croton punctatus Jacq. | 22 images |
| Cruciata pedemontana (Bellardi) Ehrend. | 122 images |
| Cryptostegia grandiflora Roxb. ex R.Br. | 53 images |
| Cryptostegia madagascariensis Bojer ex Decne. | 340 images |
| Cryptotaenia canadensis (L.) DC. | 230 images |
| Ctenitis submarginalis (Langsd. & Fisch.) Ching | 38 images |
| Ctenodon histrix (Poir.) D.B.O.S.Cardoso, P.L.R.Moraes & H.C.Lima | 5 images |
| Cucumis anguria L. | 182 images |
| Cucumis melo L. | 4732 images |
| Cucumis metuliferus E.Mey. ex Naudin | 114 images |
| Cucumis sativus L. | 4655 images |
| Cucurbita foetidissima Kunth | 258 images |
| Cucurbita maxima Duchesne | 4885 images |
| Cucurbita moschata Duchesne | 2575 images |
| Cucurbita pepo L. | 5115 images |
| Cullen americanum (L.) Rydb. | 1 images |
| Cunila origanoides (L.) Britton | 49 images |
| Cupania glabra Sw. | 36 images |
| Cupaniopsis anacardioides (A.Rich.) Radlk. | 239 images |
| Cuphea aspera Chapm. | 30 images |
| Cuphea carthagenensis (Jacq.) J.F.Macbr. | 99 images |
| Cuphea glutinosa Cham. & Schltdl. | 37 images |
| Cuphea hyssopifolia Kunth | 2730 images |
| Cuphea procumbens Ortega | 13 images |
| Cuphea strigulosa Kunth | 17 images |
| Cuphea viscosissima Jacq. | 47 images |
| Curcuma zanthorrhiza Roxb. | 2 images |
| Cuscuta americana L. | 24 images |
| Cuscuta approximata Bab. | 35 images |
| Cuscuta campestris Yunck. | 578 images |
| Cuscuta cephalanthi Engelm. | 3 images |
| Cuscuta compacta Juss. ex Choisy | 1 images |
| Cuscuta epilinum Weihe | 14 images |
| Cuscuta epithymum (L.) L. | 1087 images |
| Cuscuta exaltata Engelm. | 4 images |
| Cuscuta glomerata Choisy | 2 images |
| Cuscuta gronovii Willd. ex Schult. | 4 images |
| Cuscuta indecora Choisy | 15 images |
| Cuscuta pentagona Engelm. | 12 images |
| Cuscuta polygonorum Engelm. | 2 images |
| Cuscuta suaveolens Ser. | 1 images |
| Cuscuta umbellata Kunth | 4 images |
| Cyanthillium cinereum (L.) H.Rob. | 742 images |
| Cycas revoluta Thunb. | 5789 images |
| Cyclachaena xanthiifolia (Nutt.) Fresen. | 96 images |
| Cyclopogon cranichoides (Griseb.) Schltr. | 2 images |
| Cyclopogon elatus (Sw.) Schltr. | 8 images |
| Cyclospermum leptophyllum (Pers.) Sprague ex Britton & P.Wilson | 373 images |
| Cydonia oblonga Mill. | 9920 images |
| Cymbalaria muralis G.Gaertn., B.Mey. & Scherb. | 1398 images |
| Cymbopogon citratus (DC.) Stapf | 1051 images |
| Cymbopogon iwarancusa (Jones ex Roxb.) Schult. | 3 images |
| Cymbopogon nardus (L.) Rendle | 49 images |
| Cynanchum laeve (Michx.) Pers. | 178 images |
| Cynodon aethiopicus Clayton & J.R.Harlan | 1 images |
| Cynodon dactylon (L.) Pers. | 2430 images |
| Cynodon nlemfuensis Vanderyst | 31 images |
| Cynodon plectostachyus (K.Schum.) Pilg. | 2 images |
| Cynoglossum amabile Stapf & J.R.Drumm. | 778 images |
| Cynoglossum creticum Mill. | 3502 images |
| Cynoglossum officinale L. | 3005 images |
| Cynosurus cristatus L. | 634 images |
| Cynosurus echinatus L. | 541 images |
| Cyperus aggregatus (Willd.) Endl. | 48 images |
| Cyperus albostriatus Schrad. | 9 images |
| Cyperus alopecuroides Rottb. | 53 images |
| Cyperus alternifolius L. | 1998 images |
| Cyperus articulatus L. | 28 images |
| Cyperus bipartitus Torr. | 6 images |
| Cyperus blepharoleptos Steud. | 3 images |
| Cyperus brevifolioides Thieret & Delahouss. | 4 images |
| Cyperus brevifolius (Rottb.) Hassk. | 143 images |
| Cyperus compressus L. | 43 images |
| Cyperus difformis L. | 107 images |
| Cyperus digitatus Roxb. | 3 images |
| Cyperus distans L.f. | 6 images |
| Cyperus entrerianus Boeckeler | 12 images |
| Cyperus eragrostis Lam. | 2312 images |
| Cyperus esculentus L. | 801 images |
| Cyperus flavescens L. | 58 images |
| Cyperus fuscus L. | 313 images |
| Cyperus giganteus Vahl | 35 images |
| Cyperus granitophilus McVaugh | 1 images |
| Cyperus haspan L. | 124 images |
| Cyperus hortensis (Salzm. ex Steud.) Dorr | 137 images |
| Cyperus iria L. | 43 images |
| Cyperus laevigatus L. | 48 images |
| Cyperus lanceolatus Poir. | 6 images |
| Cyperus ligularis L. | 53 images |
| Cyperus lupulinus (Biehler) Marcks | 2 images |
| Cyperus macrostachyos Lam. | 5 images |
| Cyperus microiria Steud. | 23 images |
| Cyperus ochraceus Vahl | 7 images |
| Cyperus odoratus L. | 112 images |
| Cyperus papyrus L. | 1198 images |
| Cyperus pedunculatus (R.Br.) J.Kern | 8 images |
| Cyperus polystachyos Rottb. | 16 images |
| Cyperus prolifer Lam. | 7 images |
| Cyperus prolixus Kunth | 3 images |
| Cyperus pseudovegetus Steud. | 5 images |
| Cyperus reflexus Vahl | 3 images |
| Cyperus richardii Steud. | 62 images |
| Cyperus rotundus L. | 921 images |
| Cyperus sanguinolentus Vahl | 2 images |
| Cyperus serotinus Rottb. | 5 images |
| Cyperus sesquiflorus (Torr.) Mattf. & Kük. | 28 images |
| Cyperus sphacelatus Rottb. | 15 images |
| Cyperus squarrosus L. | 25 images |
| Cyperus strigosus L. | 280 images |
| Cyperus subsquarrosus (Muhl.) Bauters | 160 images |
| Cyperus surinamensis Rottb. | 21 images |
| Cyperus virens Michx. | 11 images |
| Cypripedium acaule Aiton | 831 images |
| Cypripedium candidum Muhl. ex Willd. | 44 images |
| Cypripedium kentuckiense C.F.Reed | 1 images |
| Cypripedium parviflorum Salisb. | 297 images |
| Cypripedium reginae Walter | 195 images |
| Cyrilla racemiflora L. | 71 images |
| Cyrtomium caryotideum (Wall. ex Hook. & Grev.) C.Presl | 5 images |
| Cyrtomium falcatum (L.f.) C.Presl | 343 images |
| Cyrtomium fortunei J.Sm. | 376 images |
| Cyrtopodium flavum (Nees) Link & Otto ex Rchb. | 28 images |
| Cyrtopodium punctatum (L.) Lindl. | 16 images |
| Cystopteris × tennesseensis Shaver | 13 images |
| Cystopteris bulbifera (L.) Bernh. | 89 images |
| Cystopteris fragilis (L.) Bernh. | 1040 images |
| Cystopteris protrusa (Weath.) Blasdell | 40 images |
| Cystopteris tenuis (Michx.) Desv. | 3 images |
| Cytisus scoparius (L.) Link | 11366 images |
| Dactylis glomerata L. | 9474 images |
| Dactyloctenium aegyptium (L.) Willd. | 389 images |
| Dactyloctenium radulans (R.Br.) P.Beauv. | 3 images |
| Dactylorhiza viridis (L.) R.M.Bateman, Pridgeon & M.W.Chase | 729 images |
| Dalbergia ecastaphyllum (L.) Taub. | 73 images |
| Dalbergia sissoo Roxb. ex DC. | 40 images |
| Dalea candida Willd. | 9 images |
| Dalea compacta Spreng. | 16 images |
| Dalea lanata Spreng. | 4 images |
| Dalea leporina (Aiton) Bullock | 22 images |
| Dalea purpurea Vent. | 224 images |
| Dalea villosa (Nutt.) Spreng. | 3 images |
| Dalechampia scandens L. | 51 images |
| Dalibarda repens L. | 24 images |
| Damburneya coriacea (Sw.) Trofimov & Rohwer | 23 images |
| Danthonia compressa Austin | 3 images |
| Danthonia intermedia Vasey | 2 images |
| Dasistoma macrophylla (Nutt.) Raf. | 51 images |
| Datura innoxia Mill. | 1479 images |
| Datura metel L. | 563 images |
| Datura stramonium L. | 14075 images |
| Datura wrightii Regel | 1233 images |
| Daucus carota L. | 24281 images |
| Daucus pusillus Michx. | 192 images |
| Decodon verticillatus (L.) Elliott | 48 images |
| Delphinium ajacis L. | 5623 images |
| Delphinium carolinianum Walter | 150 images |
| Delphinium consolida L. | 2378 images |
| Delphinium exaltatum Aiton | 16 images |
| Delphinium pubescens DC. | 61 images |
| Delphinium tricorne Michx. | 207 images |
| Dendrophylax lindenii (Lindl.) Benth. ex Rolfe | 8 images |
| Dennstaedtia bipinnata (Cav.) Maxon | 4 images |
| Dennstaedtia punctilobula (Michx.) T.Moore | 2 images |
| Deparia acrostichoides (Sw.) M.Kato | 48 images |
| Deparia petersenii (Kunze) M.Kato | 42 images |
| Deschampsia cespitosa (L.) P.Beauv. | 423 images |
| Deschampsia elongata (Hook.) Munro | 3 images |
| Descurainia pinnata (Walter) Britton | 158 images |
| Descurainia sophia (L.) Webb ex Prantl | 734 images |
| Desmanthus illinoensis (Michx.) MacMill. ex B.L.Rob. & Fernald | 86 images |
| Desmanthus leptophyllus Kunth | 12 images |
| Desmanthus virgatus (L.) Willd. | 212 images |
| Desmodium canadense (L.) DC. | 184 images |
| Desmodium canescens (L.) DC. | 7 images |
| Desmodium glabellum (Michx.) DC. | 7 images |
| Desmodium incanum (Sw.) DC. | 130 images |
| Desmodium paniculatum (L.) DC. | 481 images |
| Desmodium scorpiurus (Sw.) Desv. ex DC. | 4 images |
| Desmodium tortuosum (Sw.) DC. | 143 images |
| Deutzia crenata Siebold & Zucc. | 197 images |
| Deutzia gracilis Siebold & Zucc. | 2563 images |
| Deutzia parviflora Bunge | 4 images |
| Dianella ensifolia (L.) Redouté | 42 images |
| Dianthera americana L. | 177 images |
| Dianthera angusta (Chapm.) Small | 2 images |
| Dianthera pectoralis (Jacq.) J.F.Gmel. | 66 images |
| Dianthus armeria L. | 2205 images |
| Dianthus barbatus L. | 10310 images |
| Dianthus deltoides L. | 3739 images |
| Dianthus plumarius L. | 1366 images |
| Diaperia prolifera (Nutt. ex DC.) Nutt. | 1 images |
| Diaperia verna (Raf.) Morefield | 8 images |
| Dicentra canadensis (Goldie) Walp. | 151 images |
| Dicentra cucullaria (L.) Bernh. | 641 images |
| Dicentra eximia (Ker Gawl.) Torr. | 98 images |
| Dicerandra frutescens Shinners | 2 images |
| Dichanthelium acuminatum (Sw.) Gould & C.A.Clark | 43 images |
| Dichanthelium clandestinum (L.) Gould | 150 images |
| Dichanthelium latifolium (L.) Harvill | 2 images |
| Dichanthelium oligosanthes (Schult.) Gould | 29 images |
| Dichanthelium sabulorum (Lam.) Gould & C.A.Clark | 1 images |
| Dichanthelium scribnerianum (Nash) J.R.Thomas | 2 images |
| Dichanthium annulatum (Forssk.) Stapf | 54 images |
| Dichanthium aristatum (Poir.) C.E.Hubb. | 2 images |
| Dichanthium sericeum (R.Br.) A.Camus | 4 images |
| Dichodon viscidum (M.Bieb.) Holub | 39 images |
| Dichondra carolinensis Michx. | 209 images |
| Dichondra micrantha Urb. | 946 images |
| Dichrostachys cinerea (L.) Wight & Arn. | 383 images |
| Dicliptera brachiata Spreng. | 69 images |
| Dicliptera sexangularis (L.) Juss. | 11 images |
| Dicranopteris flexuosa (Schrad.) Underw. | 5 images |
| Diervilla lonicera Mill. | 545 images |
| Diervilla rivularis Gatt. | 1 images |
| Diervilla sessilifolia Buckley | 83 images |
| Digitalis lanata Ehrh. | 178 images |
| Digitalis lutea L. | 2808 images |
| Digitalis purpurea L. | 20211 images |
| Digitaria bicornis (Lam.) Roem. & Schult. | 4 images |
| Digitaria ciliaris (Retz.) Koeler | 197 images |
| Digitaria eriantha Steud. | 24 images |
| Digitaria filiformis (L.) Koeler | 5 images |
| Digitaria horizontalis Willd. | 5 images |
| Digitaria insularis (L.) Mez ex Ekman | 29 images |
| Digitaria ischaemum (Schreb.) Muhl. | 48 images |
| Digitaria milanjiana (Rendle) Stapf | 3 images |
| Digitaria sanguinalis (L.) Scop. | 2145 images |
| Digitaria setigera Roth | 14 images |
| Digitaria violascens Link | 12 images |
| Dimocarpus longan Lour. | 427 images |
| Dinebra retroflexa (Vahl) Panz. | 6 images |
| Diodia virginiana L. | 370 images |
| Dionaea muscipula J.Ellis | 1688 images |
| Dioscorea alata L. | 265 images |
| Dioscorea bulbifera L. | 471 images |
| Dioscorea floridana Bartlett | 1 images |
| Dioscorea polystachya Turcz. | 37 images |
| Dioscorea sansibarensis Pax | 26 images |
| Dioscorea villosa L. | 276 images |
| Diospyros ebenum J.Koenig ex Retz. | 5 images |
| Diospyros maritima Blume | 7 images |
| Diospyros nigra (J.F.Gmel.) Perr. | 172 images |
| Diospyros virginiana L. | 2198 images |
| Diplachne fusca (L.) P.Beauv. ex Roem. & Schult. | 44 images |
| Diplazium esculentum (Retz.) Sw. | 53 images |
| Diplazium lonchophyllum Kunze | 1 images |
| Diplotaxis muralis (L.) DC. | 811 images |
| Diplotaxis siifolia Kunze | 8 images |
| Diplotaxis tenuifolia (L.) DC. | 5540 images |
| Dipsacus fullonum L. | 12928 images |
| Dipsacus laciniatus L. | 835 images |
| Dipsacus sativus (L.) Honck. | 2330 images |
| Dirca palustris L. | 73 images |
| Distichlis littoralis (Engelm.) H.L.Bell & Columbus | 4 images |
| Distichlis spicata (L.) Greene | 90 images |
| Distimake dissectus (Jacq.) A.R.Simões & Staples | 256 images |
| Distimake quinquefolius (L.) A.R.Simões & Staples | 71 images |
| Distimake tuberosus (L.) A.R.Simões & Staples | 406 images |
| Dittrichia viscosa (L.) Greuter | 8071 images |
| Dodonaea viscosa Jacq. | 227 images |
| Doellingeria infirma Greene | 6 images |
| Doellingeria umbellata (Mill.) Nees | 433 images |
| Dorstenia contrajerva L. | 83 images |
| Draba verna L. | 2693 images |
| Dracaena angolensis (Welw. ex Carrière) Byng & Christenh. | 1704 images |
| Dracaena hyacinthoides (L.) Mabb. | 1800 images |
| Dracaena trifasciata (Prain) Mabb. | 11736 images |
| Dracocephalum parviflorum Nutt. | 28 images |
| Drosera brevifolia Pursh | 68 images |
| Drosera capillaris Poir. | 138 images |
| Drosera filiformis Raf. | 70 images |
| Drosera intermedia Hayne | 407 images |
| Drosera rotundifolia L. | 1434 images |
| Drymaria cordata (L.) Willd. ex Schult. | 312 images |
| Drymocallis arguta (Pursh) Rydb. | 7 images |
| Dryopteris × boottii (Tuck.) Underw. | 4 images |
| Dryopteris × uliginosa (A.Braun ex Döll) Kuntze ex Druce | 1 images |
| Dryopteris carthusiana (Vill.) H.P.Fuchs | 680 images |
| Dryopteris clintoniana (D.C.Eaton) Dowell | 2 images |
| Dryopteris cristata (L.) A.Gray | 221 images |
| Dryopteris erythrosora (D.C.Eaton) Kuntze | 183 images |
| Dryopteris filix-mas (L.) Schott | 6092 images |
| Dryopteris goldieana (Hook. ex Goldie) A.Gray | 12 images |
| Dryopteris intermedia A.Gray | 11 images |
| Dryopteris ludoviciana (Kunze) Small | 9 images |
| Dryopteris marginalis (L.) A.Gray | 4 images |
| Dulichium arundinaceum (L.) Britton | 35 images |
| Duranta erecta L. | 7591 images |
| Dyschoriste angusta (A.Gray) Small | 1 images |
| Dyschoriste humistrata (Michx.) Kuntze | 1 images |
| Dyschoriste oblongifolia (Michx.) Kuntze | 13 images |
| Dysphania ambrosioides (L.) Mosyakin & Clemants | 1221 images |
| Dysphania anthelmintica (L.) Mosyakin & Clemants | 1 images |
| Dysphania atriplicifolia (Spreng.) G.Kadereit, Sukhor. & Uotila | 59 images |
| Dysphania botrys (L.) Mosyakin & Clemants | 104 images |
| Dysphania multifida (L.) Mosyakin & Clemants | 56 images |
| Dysphania pumilio (R.Br.) Mosyakin & Clemants | 237 images |
| Dyssodia papposa (Vent.) Hitchc. | 23 images |
| Ecballium elaterium (L.) A.Rich. | 5006 images |
| Echinacea angustifolia DC. | 1372 images |
| Echinacea pallida (Nutt.) Nutt. | 658 images |
| Echinacea paradoxa Britton | 7 images |
| Echinacea purpurea (L.) Moench | 6181 images |
| Echinacea sanguinea Nutt. | 10 images |
| Echinacea simulata McGregor | 4 images |
| Echinacea tennesseensis (Beadle) Small | 85 images |
| Echinochloa colonum (L.) Link | 201 images |
| Echinochloa crus-galli (L.) P.Beauv. | 2490 images |
| Echinochloa frumentacea Link | 13 images |
| Echinochloa muricata (P.Beauv.) Fernald | 40 images |
| Echinochloa polystachya (Kunth) Hitchc. | 2 images |
| Echinochloa walteri (Pursh) A.Heller | 1 images |
| Echinocystis lobata (Michx.) Torr. & A.Gray | 718 images |
| Echinodorus berteroi (Spreng.) Fassett | 12 images |
| Echinops sphaerocephalus L. | 2874 images |
| Echites umbellatus Jacq. | 11 images |
| Echium italicum L. | 1956 images |
| Echium vulgare L. | 31015 images |
| Eclipta prostrata (L.) L. | 1258 images |
| Edgeworthia chrysantha Lindl. | 712 images |
| Edgeworthia gardneri (Wall.) Meisn. | 37 images |
| Elaeagnus angustifolia L. | 4735 images |
| Elaeagnus commutata Bernh. ex Rydb. | 193 images |
| Elaeagnus multiflora Thunb. | 189 images |
| Elaeagnus pungens Thunb. | 4856 images |
| Elaeagnus umbellata Thunb. | 2456 images |
| Elatine triandra Schkuhr | 39 images |
| Eleocharis acicularis (L.) Roem. & Schult. | 51 images |
| Eleocharis acutangula (Roxb.) Schult. | 10 images |
| Eleocharis albida Torr. | 2 images |
| Eleocharis atropurpurea (Retz.) J.Presl & C.Presl | 4 images |
| Eleocharis baldwinii (Torr.) Chapm. | 3 images |
| Eleocharis cellulosa Torr. | 1 images |
| Eleocharis compressa Sull. | 16 images |
| Eleocharis elegans (Kunth) Roem. & Schult. | 97 images |
| Eleocharis elongata Chapm. | 1 images |
| Eleocharis erythropoda Steud. | 5 images |
| Eleocharis exigua (Kunth) Roem. & Schult. | 2 images |
| Eleocharis flavescens (Poir.) Urb. | 8 images |
| Eleocharis interstincta (Vahl) Roem. & Schult. | 8 images |
| Eleocharis macrostachya Britton | 10 images |
| Eleocharis montana (Kunth) Roem. & Schult. | 1 images |
| Eleocharis mutata (L.) Roem. & Schult. | 8 images |
| Eleocharis obtusa (Willd.) Schult. | 31 images |
| Eleocharis ovata (Roth) Roem. & Schult. | 42 images |
| Eleocharis palustris (L.) Roem. & Schult. | 593 images |
| Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer | 40 images |
| Eleocharis retroflexa (Poir.) Urb. | 12 images |
| Eleocharis tortilis (Link) Schult. | 1 images |
| Eleocharis uniglumis (Link) Schult. | 26 images |
| Elephantopus carolinianus Raeusch. | 40 images |
| Elephantopus elatus Bertol. | 251 images |
| Elephantopus tomentosus L. | 23 images |
| Eleusine africana Kenn.-O'Byrne | 12 images |
| Eleusine coracana (L.) Gaertn. | 43 images |
| Eleusine indica (L.) Gaertn. | 827 images |
| Eleusine tristachya (Lam.) Lam. | 136 images |
| Eleutherococcus sieboldianus (Makino) Koidz. | 8 images |
| Ellisia nyctelea (L.) L. | 49 images |
| Elodea canadensis Michx. | 217 images |
| Elodea densa (Planch.) Casp. | 112 images |
| Elodea nuttallii (Planch.) H.St.John | 71 images |
| Elsholtzia ciliata (Thunb.) Hyl. | 48 images |
| Eltroplectris calcarata (Sw.) Garay & H.R.Sweet | 4 images |
| Elymus canadensis L. | 116 images |
| Elymus elymoides (Raf.) Swezey | 19 images |
| Elymus glaucus Buckley | 13 images |
| Elymus hystrix L. | 46 images |
| Elymus repens (L.) Gould | 540 images |
| Elymus riparius Wiegand | 4 images |
| Elymus villosus Muhl. ex Willd. | 6 images |
| Elymus violaceus (Hornem.) J.Feilberg | 8 images |
| Elymus virginicus L. | 43 images |
| Elytraria caroliniensis (J.F.Gmel.) Pers. | 4 images |
| Emilia fosbergii Nicolson | 642 images |
| Emilia sonchifolia (L.) DC. | 377 images |
| Encyclia rufa (Lindl.) Britton & Millsp. | 2 images |
| Encyclia tampensis (Lindl.) Small | 96 images |
| Enemion biternatum Raf. | 6 images |
| Engelmannia peristenia (Raf.) Goodman & C.A.Lawson | 16 images |
| Enneapogon desvauxii P.Beauv. | 7 images |
| Epidendrum acunae Dressler | 16 images |
| Epidendrum conopseum R.Br. | 9 images |
| Epidendrum nocturnum Jacq. | 119 images |
| Epidendrum rigidum Jacq. | 47 images |
| Epidendrum strobiliferum Rchb.f. | 23 images |
| Epifagus virginiana (L.) Barton | 102 images |
| Epigaea repens L. | 165 images |
| Epilobium angustifolium L. | 16332 images |
| Epilobium brachycarpum C.Presl | 248 images |
| Epilobium ciliatum Raf. | 4003 images |
| Epilobium coloratum Biehler | 50 images |
| Epilobium hirsutum L. | 12252 images |
| Epilobium leptophyllum Raf. | 8 images |
| Epipactis helleborine (L.) Crantz | 5852 images |
| Epiphyllum hookeri Haw. | 111 images |
| Epipremnum aureum (Linden & André) G.S.Bunting | 11052 images |
| Equisetum × ferrissii Clute | 1 images |
| Equisetum × litorale Kühlew. ex Rupr. | 15 images |
| Equisetum arvense L. | 5967 images |
| Equisetum fluviatile L. | 758 images |
| Equisetum laevigatum A.Braun & Engelm. | 67 images |
| Equisetum ramosissimum Desf. | 715 images |
| Equisetum sylvaticum L. | 2127 images |
| Eragrostis barrelieri Daveau | 59 images |
| Eragrostis cilianensis (All.) Vignolo ex Janch. | 85 images |
| Eragrostis ciliaris (L.) R.Br. | 5 images |
| Eragrostis cumingii Steud. | 7 images |
| Eragrostis curvula (Schrad.) Nees | 60 images |
| Eragrostis cylindriflora Hochst. | 13 images |
| Eragrostis elongata (Willd.) J.Jacq. | 2 images |
| Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. | 5 images |
| Eragrostis japonica (Thunb.) Trin. | 5 images |
| Eragrostis mexicana (Hornem.) Link | 27 images |
| Eragrostis minor Host | 260 images |
| Eragrostis pectinacea (Michx.) Nees | 27 images |
| Eragrostis pilosa (L.) P.Beauv. | 51 images |
| Eragrostis plana Nees | 5 images |
| Eragrostis prolifera (Sw.) Steud. | 9 images |
| Eragrostis spectabilis (Pursh) Steud. | 163 images |
| Eragrostis tef (Zuccagni) Trotter | 9 images |
| Eragrostis tenella (L.) P.Beauv. ex Roem. & Schult. | 20 images |
| Eragrostis unioloides (Retz.) Nees ex Steud. | 95 images |
| Eragrostis viscosa (Retz.) Trin. | 4 images |
| Eranthemum pulchellum Andrews | 256 images |
| Eranthis hyemalis (L.) Salisb. | 4139 images |
| Erechtites hieraciifolius (L.) Raf. ex DC. | 1470 images |
| Eremochloa ophiuroides (Munro) Hack. | 2 images |
| Erianthus alopecuroides (L.) Elliott | 20 images |
| Erianthus giganteus (Walter) P.Beauv. | 3 images |
| Erica tetralix L. | 1073 images |
| Erigenia bulbosa (Michx.) Nutt. | 72 images |
| Erigeron annuus (L.) Desf | 199 images |
| Erigeron canadensis L. | 12934 images |
| Erigeron divaricatus Michx. | 22 images |
| Erigeron floribundus (Kunth) Sch.Bip. | 1560 images |
| Erigeron philadelphicus L. | 2917 images |
| Erigeron procumbens (Mill.) G.L.Nesom | 3 images |
| Erigeron pulchellus Michx. | 201 images |
| Erigeron quercifolius Lam. | 79 images |
| Erigeron strigosus Muhl. ex Willd. | 3902 images |
| Eriocaulon aquaticum (Hill) Druce | 25 images |
| Eriocaulon decangulare L. | 5 images |
| Eriochloa barbatus (Trin.) S.Yadav & M.R.Almeida | 2 images |
| Eriochloa villosa (Thunb.) Kunth | 6 images |
| Eriogonum allenii S.Watson | 9 images |
| Eriogonum longifolium Nutt. | 8 images |
| Eriogonum multiflorum Benth. | 16 images |
| Eriogonum tomentosum Michx. | 6 images |
| Eriophorum virginicum L. | 16 images |
| Erithalis fruticosa L. | 59 images |
| Ernodea littoralis Sw. | 53 images |
| Erodium cicutarium (L.) L'Hér. | 12725 images |
| Erodium moschatum (L.) L'Hér. | 4471 images |
| Eruca vesicaria (L.) Cav. | 3907 images |
| Erucastrum gallicum (Willd.) O.E.Schulz | 296 images |
| Eryngium aquaticum L. | 16 images |
| Eryngium campestre L. | 5136 images |
| Eryngium foetidum L. | 567 images |
| Eryngium heterophyllum Engelm. | 30 images |
| Eryngium hookeri Walp. | 12 images |
| Eryngium integrifolium Walter | 5 images |
| Eryngium leavenworthii Torr. & A.Gray | 123 images |
| Eryngium maritimum L. | 3776 images |
| Eryngium planum L. | 1897 images |
| Eryngium prostratum Nutt. ex DC. | 12 images |
| Eryngium yuccifolium Michx. | 420 images |
| Erysimum asperum (Nutt.) DC. | 96 images |
| Erysimum capitatum (Douglas) Greene | 11 images |
| Erysimum cheiranthoides L. | 1109 images |
| Erysimum repandum L. | 54 images |
| Erysimum virgatum Roth | 106 images |
| Erythranthe floribunda (Lindl.) G.L.Nesom | 9 images |
| Erythranthe guttata (DC.) G.L.Nesom | 827 images |
| Erythranthe moschata (Douglas ex Lindl.) G.L.Nesom | 9 images |
| Erythrina herbacea L. | 295 images |
| Erythronium albidum Nutt. | 206 images |
| Erythronium americanum Ker Gawl. | 1396 images |
| Erythronium dens-canis L. | 3060 images |
| Erythronium rostratum W.Wolf | 13 images |
| Erythronium umbilicatum C.R.Parks & Hardin | 7 images |
| Erythroxylum havanense Jacq. | 34 images |
| Eschscholzia californica Cham. | 13545 images |
| Eucalyptus robusta Sm. | 333 images |
| Eugenia axillaris (Sw.) Willd. | 28 images |
| Eugenia confusa DC. | 6 images |
| Eugenia foetida Pers. | 8 images |
| Eugenia rhombea (O.Berg) Krug & Urb. | 5 images |
| Eugenia uniflora L. | 2596 images |
| Eulophia alta (L.) Fawc. & Rendle | 28 images |
| Eulophia graminea Lindl. | 17 images |
| Eulophia maculata (Lindl.) Rchb.f. | 372 images |
| Euonymus alatus (Thunb.) Siebold | 2910 images |
| Euonymus americanus L. | 406 images |
| Euonymus atropurpureus Jacq. | 109 images |
| Euonymus europaeus L. | 18932 images |
| Euonymus fortunei (Turcz.) Hand.-Mazz. | 5961 images |
| Eupatorium album L. | 6 images |
| Eupatorium altissimum L. | 113 images |
| Eupatorium cannabinum L. | 19599 images |
| Eupatorium capillifolium (Lam.) Small ex Porter & Britton | 457 images |
| Eupatorium hyssopifolium L. | 41 images |
| Eupatorium mohrii Greene | 3 images |
| Eupatorium perfoliatum L. | 861 images |
| Eupatorium pilosum Walter | 7 images |
| Eupatorium resinosum Torr. ex DC. | 5 images |
| Eupatorium rotundifolium L. | 34 images |
| Eupatorium serotinum Michx. | 890 images |
| Eupatorium sessilifolium L. | 6 images |
| Euphorbia corollata L. | 196 images |
| Euphorbia cyparissias L. | 15372 images |
| Euphorbia davidii Subils | 37 images |
| Euphorbia dentata Michx. | 17 images |
| Euphorbia falcata L. | 152 images |
| Euphorbia glyptosperma Engelm. | 36 images |
| Euphorbia graminea Jacq. | 185 images |
| Euphorbia helioscopia L. | 8594 images |
| Euphorbia heterophylla L. | 972 images |
| Euphorbia hirta L. | 1057 images |
| Euphorbia hypericifolia L. | 1684 images |
| Euphorbia hyssopifolia L. | 119 images |
| Euphorbia lasiocarpa Klotzsch | 17 images |
| Euphorbia lathyris L. | 8674 images |
| Euphorbia maculata L. | 725 images |
| Euphorbia marginata Pursh | 1353 images |
| Euphorbia mesembryanthemifolia Jacq. | 27 images |
| Euphorbia nutans Lag. | 358 images |
| Euphorbia ophthalmica Pers. | 9 images |
| Euphorbia peplus L. | 6475 images |
| Euphorbia platyphyllos L. | 465 images |
| Euphorbia polygonifolia L. | 36 images |
| Euphorbia prostrata Aiton | 1844 images |
| Euphorbia pubentissima Michx. | 7 images |
| Euphorbia serpens Kunth | 487 images |
| Euphorbia thymifolia L. | 58 images |
| Euphorbia tithymaloides L. | 2062 images |
| Euphorbia virgata Waldst. & Kit. | 13 images |
| Euploca convolvulacea Nutt. | 2 images |
| Euploca polyphylla (Lehm.) J.I.M.Melo & Semir | 36 images |
| Euploca procumbens (Mill.) Diane & Hilger | 26 images |
| Euploca tenella (Torr.) Feuillet & Halse | 38 images |
| Eurybia divaricata (L.) G.L.Nesom | 392 images |
| Eurybia hemispherica (Alexander) G.L.Nesom | 3 images |
| Eurybia macrophylla (L.) Cass. | 1417 images |
| Eurybia radula (Aiton) G.L.Nesom | 2 images |
| Eurybia schreberi (Nees) Nees | 23 images |
| Eustachys petraea (Sw.) Desv. | 2 images |
| Eustachys retusa (Lag.) Kunth | 4 images |
| Eustoma exaltatum (L.) Salisb. ex G.Don | 61 images |
| Eustoma russellianum (Hook.) G.Don | 1538 images |
| Euthamia graminifolia (L.) Nutt. | 660 images |
| Euthamia gymnospermoides Greene | 13 images |
| Eutrochium fistulosum (Barratt) E.E.Lamont | 360 images |
| Eutrochium maculatum (L.) E.E.Lamont | 1223 images |
| Eutrochium purpureum (L.) E.E.Lamont | 236 images |
| Evolvulus alsinoides (L.) L. | 672 images |
| Evolvulus convolvuloides (Willd. ex Schult.) Stearn | 12 images |
| Evolvulus filipes Mart. | 5 images |
| Evolvulus sericeus Sw. | 68 images |
| Exochorda racemosa (Fortune ex Lindl.) Rehder | 9 images |
| Exostema caribaeum (Jacq.) Schult. | 40 images |
| Exothea paniculata (Juss.) Radlk. | 2 images |
| Facelis retusa (Lam.) Sch.Bip. | 15 images |
| Fagopyrum esculentum Moench | 5644 images |
| Fagus grandifolia Ehrh. | 2299 images |
| Falcaria vulgaris Bernh. | 920 images |
| Fallopia baldschuanica (Regel) Holub | 1210 images |
| Fallopia convolvulus (L.) Á.Löve | 1312 images |
| Fallopia dumetorum (L.) Holub | 932 images |
| Fallopia scandens (L.) Holub | 22 images |
| Fatoua villosa (Thunb.) Nakai | 282 images |
| Festuca bromoides L. | 174 images |
| Festuca filiformis Pourr. | 138 images |
| Festuca heterophylla Lam. | 134 images |
| Festuca myuros L. | 245 images |
| Festuca octoflora Walter | 10 images |
| Festuca ovina L. | 206 images |
| Festuca rubra L. | 315 images |
| Festuca trachyphylla (Hack.) Hack. | 14 images |
| Ficus americana Aubl. | 108 images |
| Ficus aurea Nutt. | 184 images |
| Ficus benghalensis L. | 1090 images |
| Ficus benjamina L. | 6639 images |
| Ficus carica L. | 14132 images |
| Ficus citrifolia Mill. | 195 images |
| Ficus elastica Roxb. ex Hornem. | 6073 images |
| Ficus microcarpa L.f. | 3883 images |
| Ficus pumila L. | 1940 images |
| Ficus religiosa L. | 982 images |
| Filago germanica (L.) Huds. | 115 images |
| Filipendula rubra (Hill) B.L.Rob. | 221 images |
| Fimbristylis autumnalis (L.) Roem. & Schult. | 287 images |
| Fimbristylis cymosa R.Br. | 14 images |
| Fimbristylis dichotoma (L.) Vahl | 59 images |
| Fimbristylis littoralis Gaudich. | 40 images |
| Fimbristylis quinquangularis (Vahl) Kunth | 3 images |
| Fimbristylis vahlii (Lam.) Link | 20 images |
| Firmiana simplex (L.) W.Wight | 729 images |
| Flaveria bidentis (L.) Kuntze | 30 images |
| Flaveria linearis Lag. | 12 images |
| Flaveria trinervia (Spreng.) C.Mohr | 74 images |
| Fleischmannia incarnata (Walter) R.M.King & H.Rob. | 15 images |
| Floerkea proserpinacoides Willd. | 45 images |
| Flueggea virosa (Roxb. ex Willd.) Royle | 163 images |
| Foeniculum vulgare Mill. | 10718 images |
| Forestiera acuminata (Michx.) Poir. | 17 images |
| Forestiera ligustrina (Michx.) Poir. | 18 images |
| Forsythia suspensa (Thunb.) Vahl | 4872 images |
| Forsythia viridissima Lindl. | 2952 images |
| Fothergilla gardenii L. | 234 images |
| Fothergilla latifolia J.F.Mill. | 243 images |
| Fragaria vesca L. | 11226 images |
| Fragaria virginiana Mill. | 324 images |
| Frangula alnus Mill. | 5672 images |
| Frangula caroliniana (Walter) A.Gray | 90 images |
| Franklinia alatamaha Marshall | 52 images |
| Frasera caroliniensis Walter | 49 images |
| Fraxinus americana L. | 4684 images |
| Fraxinus berlandieriana A.DC. | 1 images |
| Fraxinus caroliniana Mill. | 18 images |
| Fraxinus excelsior L. | 23178 images |
| Fraxinus nigra Marshall | 25 images |
| Fraxinus pennsylvanica Marshall | 801 images |
| Fraxinus profunda (Bush) Bush | 19 images |
| Fraxinus quadrangulata Michx. | 34 images |
| Freesia laxa (Thunb.) Goldblatt & J.C.Manning | 163 images |
| Froelichia floridana (Nutt.) Moq. | 53 images |
| Froelichia gracilis (Hook.) Moq. | 33 images |
| Fuirena pumila (Torr.) Spreng. | 1 images |
| Fuirena simplex Vahl | 8 images |
| Fuirena squarrosa Michx. | 1 images |
| Fuirena umbellata Rottb. | 16 images |
| Fumaria capreolata L. | 3897 images |
| Fumaria officinalis L. | 7496 images |
| Fumaria vaillantii Loisel. | 245 images |
| Funastrum clausum (Jacq.) Schltr. | 50 images |
| Funastrum cynanchoides (Decne.) Schltr. | 37 images |
| Furcraea foetida (L.) Haw. | 777 images |
| Furcraea selloana K.Koch | 216 images |
| Gaillardia aestivalis (Walter) H.Rock | 19 images |
| Gaillardia pulchella Foug. | 3190 images |
| Galactia elliottii Nutt. | 19 images |
| Galactia erecta (Walter) Vail | 1 images |
| Galactia floridana Torr. & A.Gray | 2 images |
| Galactia striata (Jacq.) Urb. | 31 images |
| Galactia volubilis (L.) Britton | 4 images |
| Galanthus nivalis L. | 5007 images |
| Galanthus plicatus M.Bieb. | 2098 images |
| Galax urceolata (Poir.) Brummitt | 103 images |
| Galearis spectabilis (L.) Raf. | 159 images |
| Galeopsis bifida Boenn. | 483 images |
| Galeopsis tetrahit L. | 8638 images |
| Galinsoga parviflora Cav. | 3205 images |
| Galinsoga quadriradiata Ruiz & Pav. | 3840 images |
| Galium aparine L. | 12690 images |
| Galium asprellum Michx. | 15 images |
| Galium boreale L. | 917 images |
| Galium circaezans Michx. | 77 images |
| Galium divaricatum Pourr. ex Lam. | 24 images |
| Galium mollugo L. | 9309 images |
| Galium obtusum Bigelow | 7 images |
| Galium palustre L. | 1534 images |
| Galium parisiense L. | 151 images |
| Galium pilosum Aiton | 7 images |
| Galium tinctorium L. | 1 images |
| Galium triflorum Michx. | 191 images |
| Galium verum L. | 9811 images |
| Galium virgatum Nutt. | 10 images |
| Galphimia gracilis Bartl. | 22 images |
| Gamochaeta americana (Mill.) Wedd. | 269 images |
| Gamochaeta antillana (Urb.) Anderb. | 34 images |
| Gamochaeta pensylvanica (Willd.) Cabrera | 63 images |
| Gamochaeta purpurea (L.) Cabrera | 79 images |
| Gaudinia fragilis (L.) P.Beauv. | 132 images |
| Gaultheria hispidula (L.) Muhl. ex Bigelow | 62 images |
| Gaultheria procumbens L. | 1221 images |
| Gaylussacia baccata (Wangenh.) K.Koch | 28 images |
| Gaylussacia bigeloviana (Fernald) Sorrie & Weakley | 3 images |
| Gaylussacia brachycera (Michx.) Torr. & A.Gray | 2 images |
| Gelsemium rankinii Small | 5 images |
| Gelsemium sempervirens (L.) J.St.-Hil. | 258 images |
| Gentiana alba Muhl. ex J.McNab | 8 images |
| Gentiana andrewsii Griseb. | 141 images |
| Gentiana autumnalis L. | 4 images |
| Gentiana clausa Raf. | 33 images |
| Gentiana linearis Froel. | 72 images |
| Gentiana puberulenta J.S.Pringle | 2 images |
| Gentiana saponaria L. | 7 images |
| Gentiana villosa L. | 16 images |
| Gentianella quinquefolia (L.) Small | 19 images |
| Gentianopsis crinita (Froel.) Ma | 58 images |
| Geobalanus oblongifolius (Michx.) Small | 5 images |
| Geranium bicknellii Britton | 30 images |
| Geranium carolinianum L. | 1263 images |
| Geranium columbinum L. | 1194 images |
| Geranium dissectum L. | 5750 images |
| Geranium maculatum L. | 1362 images |
| Geranium molle L. | 8628 images |
| Geranium pusillum L. | 8242 images |
| Geranium robertianum L. | 22217 images |
| Geranium rotundifolium L. | 4441 images |
| Geranium sibiricum L. | 507 images |
| Geranium thunbergii Siebold & Zucc. | 16 images |
| Geum aleppicum Jacq. | 236 images |
| Geum canadense Jacq. | 100 images |
| Geum laciniatum Murray | 474 images |
| Geum radiatum Michx. | 3 images |
| Geum vernum (Raf.) Torr. & A.Gray | 2 images |
| Geum virginianum L. | 12 images |
| Gibasis pellucida (M.Martens & Galeotti) D.R.Hunt | 21 images |
| Gillenia stipulata (Muhl. ex Willd.) Nutt. | 6 images |
| Gillenia trifoliata (L.) Moench | 100 images |
| Gisekia pharnaceoides L. | 25 images |
| Gladiolus communis L. | 3392 images |
| Gladiolus dalenii Van Geel | 518 images |
| Glaucium flavum Crantz | 5106 images |
| Glebionis coronaria (L.) Cass. ex Spach | 5439 images |
| Glebionis segetum (L.) Fourr. | 4760 images |
| Glechoma hederacea L. | 25681 images |
| Gleditsia aquatica Marshall | 40 images |
| Gleditsia triacanthos L. | 10605 images |
| Glinus lotoides L. | 114 images |
| Glinus radiatus (Ruiz & Pav.) Rohrb. | 1 images |
| Gliricidia sepium (Jacq.) Kunth | 154 images |
| Gloriosa superba L. | 1039 images |
| Glyceria canadensis (Michx.) Trin. | 11 images |
| Glyceria declinata Bréb. | 26 images |
| Glyceria fluitans (L.) R.Br. | 149 images |
| Glyceria obtusa (Muhl.) Trin. | 1 images |
| Glyceria septentrionalis Hitchc. | 2 images |
| Glyceria striata (Lam.) Hitchc. | 33 images |
| Glycine max (L.) Merr. | 2244 images |
| Glycosmis parviflora (Sims) Little | 19 images |
| Glycyrrhiza lepidota Pursh | 72 images |
| Gmelina arborea Roxb. ex Sm. | 5 images |
| Gnaphalium uliginosum L. | 1063 images |
| Gomphrena globosa L. | 2729 images |
| Gomphrena serrata L. | 346 images |
| Gomphrena vermicularis L. | 75 images |
| Goodyera pubescens (Willd.) R.Br. | 324 images |
| Goodyera repens (L.) R.Br. | 322 images |
| Goodyera tesselata G.Lodd. | 24 images |
| Gossypium hirsutum L. | 497 images |
| Gouania lupuloides (L.) Urb. | 34 images |
| Gouania polygama (Jacq.) Urb. | 83 images |
| Graptophyllum pictum (L.) Griff. | 572 images |
| Gratiola hispida (Benth.) Pollard | 4 images |
| Gratiola lutea Raf. | 5 images |
| Gratiola neglecta Torr. | 18 images |
| Gratiola virginiana L. | 8 images |
| Grevillea robusta A.Cunn. ex R.Br. | 2757 images |
| Grindelia ciliata (Nutt.) Spreng. | 9 images |
| Grindelia lanceolata Nutt. | 41 images |
| Grindelia squarrosa (Pursh) Dunal | 295 images |
| Grona triflora (L.) H.Ohashi & K.Ohashi | 344 images |
| Guaiacum officinale L. | 205 images |
| Guaiacum sanctum L. | 154 images |
| Guapira discolor (Spreng.) Little | 3 images |
| Guapira obtusata (Jacq.) Little | 1 images |
| Guettarda elliptica Sw. | 1 images |
| Guettarda scabra (L.) Vent. | 47 images |
| Guilandina bonduc L. | 303 images |
| Guilleminea densa (Willd. ex Schult.) Moq. | 38 images |
| Guilleminea lanuginosa (Poir.) Benth. & Hook.f. | 3 images |
| Guizotia abyssinica (L.f.) Cass. | 863 images |
| Gutierrezia texana (DC.) Torr. & A.Gray | 2 images |
| Guzmania monostachia (L.) Rusby ex Mez | 507 images |
| Gymnanthes lucida Sw. | 12 images |
| Gymnocarpium dryopteris (L.) Newman | 653 images |
| Gymnocladus dioicus (L.) K.Koch | 459 images |
| Gynura aurantiaca (Blume) DC. | 167 images |
| Gypsophila elegans M.Bieb. | 1124 images |
| Gypsophila oldhamiana Miq. | 11 images |
| Gypsophila paniculata L. | 1249 images |
| Gypsophila pilosa Huds. | 41 images |
| Gypsophila vaccaria (L.) Sm. | 1377 images |
| Habenaria quinqueseta (Michx.) Eaton | 2 images |
| Habenaria repens Nutt. | 10 images |
| Hackelia virginiana (L.) I.M.Johnst. | 128 images |
| Hackelochloa granularis (L.) Kuntze | 9 images |
| Halerpestes cymbalaria (Pursh) Greene | 11 images |
| Halesia carolina L. | 457 images |
| Halesia diptera L. | 43 images |
| Halodule wrightii Asch. | 3 images |
| Halophila decipiens Ostenf. | 2 images |
| Halophila ovalis (R.Br.) Hook.f. | 4 images |
| Hamamelis vernalis Sarg. | 16 images |
| Hamamelis virginiana L. | 2851 images |
| Hamelia patens Jacq. | 1043 images |
| Harperella nodosa (Rose) Rose | 5 images |
| Harperocallis flava McDaniel | 1 images |
| Harpullia arborea (Blanco) Radlk. | 53 images |
| Harrisia aboriginum Small ex Britton & Rose | 1 images |
| Harrisia fragrans Small ex Britton & Rose | 2 images |
| Hasteola suaveolens (L.) Pojark. | 17 images |
| Hedeoma acinoides Scheele | 5 images |
| Hedeoma drummondii Benth. | 6 images |
| Hedeoma hispida Pursh | 2 images |
| Hedeoma pulegioides (L.) Pers. | 24 images |
| Hedera canariensis Willd. | 1908 images |
| Hedera helix L. | 23670 images |
| Hedera hibernica Poit. | 66 images |
| Hedychium coronarium J.Koenig | 1185 images |
| Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. | 3 images |
| Helenium amarum (Raf.) H.Rock | 385 images |
| Helenium autumnale L. | 1398 images |
| Helenium brevifolium (Nutt.) Alph.Wood | 2 images |
| Helenium drummondii H.Rock | 5 images |
| Helenium elegans DC. | 11 images |
| Helenium flexuosum Raf. | 65 images |
| Helenium pinnatifidum (Schwein. ex Nutt.) Rydb. | 10 images |
| Helianthus × laetiflorus Pers. | 1529 images |
| Helianthus agrestis Pollard | 2 images |
| Helianthus angustifolius L. | 115 images |
| Helianthus annuus L. | 15260 images |
| Helianthus atrorubens L. | 20 images |
| Helianthus debilis Nutt. | 432 images |
| Helianthus decapetalus L. | 281 images |
| Helianthus divaricatus L. | 889 images |
| Helianthus giganteus L. | 997 images |
| Helianthus grosseserratus M.Martens | 49 images |
| Helianthus heterophyllus Nutt. | 7 images |
| Helianthus hirsutus Raf. | 78 images |
| Helianthus maximiliani Schrad. | 475 images |
| Helianthus mollis Buc'hoz | 89 images |
| Helianthus occidentalis Riddell | 34 images |
| Helianthus pauciflorus Nutt. | 173 images |
| Helianthus petiolaris Nutt. | 568 images |
| Helianthus porteri (A.Gray) Pruski | 1 images |
| Helianthus radula (Pursh) Torr. & A.Gray | 3 images |
| Helianthus silphioides Nutt. | 19 images |
| Helianthus strumosus L. | 74 images |
| Helianthus tuberosus L. | 7568 images |
| Heliconia latispatha Benth. | 363 images |
| Heliopsis helianthoides (L.) Sweet | 2122 images |
| Heliotropium amplexicaule Vahl | 318 images |
| Heliotropium angiospermum Murray | 170 images |
| Heliotropium curassavicum L. | 652 images |
| Heliotropium europaeum L. | 4879 images |
| Heliotropium indicum L. | 555 images |
| Heliotropium verdcourtii Craven | 60 images |
| Helleborus viridis L. | 5107 images |
| Helminthotheca echioides (L.) Holub | 7186 images |
| Helonias bullata L. | 33 images |
| Helosciadium nodiflorum (L.) W.D.J.Koch | 1421 images |
| Hemarthria altissima (Poir.) Stapf & C.E.Hubb. | 17 images |
| Hemerocallis fulva (L.) L. | 9888 images |
| Hemerocallis lilioasphodelus L. | 5248 images |
| Hemionitis artax Christenh. | 1 images |
| Hemionitis atropurpurea (L.) Christenh. | 45 images |
| Hemionitis eatonii (Baker) Christenh. | 2 images |
| Hemionitis feei (T.Moore) Christenh. | 2 images |
| Hemionitis glabella (Mett.) Christenh. | 11 images |
| Hemionitis lanosa (Michx.) Christenh. | 16 images |
| Hemionitis microphylla (Sw.) Christenh. | 2 images |
| Hemionitis sinuata (Lag.) Christenh. | 13 images |
| Hemionitis wrightiana (Hook.) Christenh. | 2 images |
| Hepatica acutiloba DC. | 8 images |
| Hepatica americana (DC.) Ker Gawl. | 4 images |
| Heptapleurum actinophyllum (Endl.) Lowry & G.M.Plunkett | 4006 images |
| Heptapleurum arboricola Hayata | 7140 images |
| Heracleum mantegazzianum Sommier & Levier | 2651 images |
| Heracleum maximum W.Bartram | 681 images |
| Heracleum sibiricum L. | 2652 images |
| Herbertia lahue (Molina) Goldblatt | 141 images |
| Herissantia crispa (L.) Brizicky | 33 images |
| Hermbstaedtia odorata (Burch.) T.Cooke | 4 images |
| Herniaria cinerea DC. | 21 images |
| Herniaria glabra L. | 631 images |
| Hesperis matronalis L. | 7507 images |
| Heteranthera dubia (Jacq.) MacMill. | 24 images |
| Heteranthera limosa (Sw.) Willd. | 45 images |
| Heteranthera reniformis Ruiz & Pav. | 110 images |
| Heteropogon contortus (L.) P.Beauv. ex Roem. & Schult. | 103 images |
| Heteropterys brachiata (L.) DC. | 26 images |
| Heterosperma pinnatum Cav. | 7 images |
| Heterotheca camporum (Greene) Shinners | 29 images |
| Heterotheca subaxillaris (Lam.) Britton & Rusby | 283 images |
| Heuchera americana L. | 294 images |
| Heuchera longiflora Rydb. | 4 images |
| Heuchera pubescens Pursh | 5 images |
| Heuchera villosa Michx. | 159 images |
| Hexasepalum teres (Walter) J.H.Kirkbr. | 106 images |
| Hibiscus acetosella Welw. ex Hiern | 576 images |
| Hibiscus aculeatus Walter | 35 images |
| Hibiscus bifurcatus Cav. | 5 images |
| Hibiscus coccineus Walter | 388 images |
| Hibiscus furcellatus Desr. | 9 images |
| Hibiscus grandiflorus Michx. | 62 images |
| Hibiscus laevis All. | 91 images |
| Hibiscus moscheutos L. | 4700 images |
| Hibiscus mutabilis L. | 1213 images |
| Hibiscus poeppigii (Spreng.) Garcke | 8 images |
| Hibiscus radiatus Cav. | 7 images |
| Hibiscus rosa-sinensis L. | 20647 images |
| Hibiscus schizopetalus (Mast.) Hook.f. | 172 images |
| Hibiscus syriacus L. | 24064 images |
| Hibiscus tiliaceus L. | 1330 images |
| Hibiscus trionum L. | 1041 images |
| Hieracium lachenalii Suter | 471 images |
| Hieracium megacephalon Nash | 1 images |
| Hieracium paniculatum L. | 12 images |
| Hieracium scabrum Michx. | 13 images |
| Hieracium venosum L. | 155 images |
| Hippeastrum puniceum (Lam.) Voss | 663 images |
| Hippobroma longiflora (L.) G.Don | 820 images |
| Hippocratea volubilis L. | 78 images |
| Hippomane mancinella L. | 190 images |
| Hiptage benghalensis (L.) Kurz | 144 images |
| Holcus lanatus L. | 5403 images |
| Holcus mollis L. | 174 images |
| Holosteum umbellatum L. | 144 images |
| Homalosorus pycnocarpos (Spreng.) Pic.Serm. | 3 images |
| Honckenya peploides (L.) Ehrh. | 1208 images |
| Hopia obtusa (Kunth) Zuloaga & Morrone | 1 images |
| Hordeum brachyantherum Nevski | 20 images |
| Hordeum jubatum L. | 479 images |
| Hordeum murinum L. | 6617 images |
| Hordeum pusillum Nutt. | 54 images |
| Hordeum vulgare L. | 8488 images |
| Hosta ventricosa Stearn | 60 images |
| Hottonia inflata Elliott | 4 images |
| Houstonia caerulea L. | 500 images |
| Houstonia longifolia Gaertn. | 43 images |
| Houstonia micrantha (Shinners) Terrell | 38 images |
| Houstonia purpurea L. | 113 images |
| Houstonia pusilla Schoepf | 252 images |
| Houstonia rosea (Raf.) Terrell | 10 images |
| Houstonia serpyllifolia Michx. | 40 images |
| Houttuynia cordata Thunb. | 1810 images |
| Hovenia dulcis Thunb. | 217 images |
| Hudsonia ericoides L. | 8 images |
| Hudsonia tomentosa Nutt. | 13 images |
| Humulus lupulus L. | 9491 images |
| Humulus scandens (Lour.) Merr. | 56 images |
| Huperzia dichotoma (Jacq.) Trevis. | 2 images |
| Hura crepitans L. | 469 images |
| Hyacinthoides hispanica (Mill.) Rothm. | 4888 images |
| Hyacinthoides non-scripta (L.) Chouard ex Rothm. | 10245 images |
| Hybanthus concolor (T.F.Forst.) Spreng. | 1 images |
| Hydrangea arborescens L. | 5027 images |
| Hydrangea barbara (L.) Bernd Schulz | 38 images |
| Hydrangea cinerea Small | 14 images |
| Hydrangea paniculata Siebold | 6295 images |
| Hydrangea quercifolia W.Bartram | 1748 images |
| Hydrastis canadensis L. | 147 images |
| Hydrilla verticillata (L.f.) Royle | 6 images |
| Hydrocleys nymphoides (Humb. & Bonpl. ex Willd.) Buchenau | 41 images |
| Hydrocotyle americana L. | 50 images |
| Hydrocotyle bonariensis Comm. ex Lam. | 163 images |
| Hydrocotyle bowlesioides Mathias & Constance | 7 images |
| Hydrocotyle ranunculoides L.f. | 198 images |
| Hydrocotyle sibthorpioides Lam. | 824 images |
| Hydrocotyle umbellata L. | 58 images |
| Hydrocotyle verticillata Thunb. | 587 images |
| Hydrolea corymbosa Elliott | 4 images |
| Hydrolea ovata Nutt. | 54 images |
| Hydrolea quadrivalvis Walter | 5 images |
| Hydrophyllum appendiculatum Michx. | 152 images |
| Hydrophyllum canadense L. | 16 images |
| Hydrophyllum macrophyllum Nutt. | 23 images |
| Hydrophyllum virginianum L. | 767 images |
| Hygrophila corymbosa (Blume) Lindau | 26 images |
| Hygrophila costata Nees | 44 images |
| Hygrophila difformis (L.f.) Blume | 2 images |
| Hygrophila polysperma (Roxb.) T.Anderson | 42 images |
| Hylodesmum glutinosum (Muhl. ex Willd.) H.Ohashi & R.R.Mill | 74 images |
| Hylodesmum nudiflorum (L.) H.Ohashi & R.R.Mill | 5 images |
| Hylotelephium erythrostictum (Miq.) H.Ohba | 25 images |
| Hylotelephium telephioides (Michx.) H.Ohba | 139 images |
| Hylotelephium telephium (L.) H.Ohba | 7871 images |
| Hymenachne amplexicaulis (Rudge) Nees | 42 images |
| Hymenocallis coronaria (Leconte) Kunth | 11 images |
| Hymenocallis latifolia (Mill.) M.Roem. | 12 images |
| Hymenocallis liriosme (Raf.) Shinners | 176 images |
| Hymenocallis occidentalis (Leconte) Kunth | 13 images |
| Hymenocallis palmeri S.Watson | 11 images |
| Hymenocallis rotata (Ker Gawl.) Herb. | 5 images |
| Hymenopappus artemisiifolius DC. | 65 images |
| Hymenopappus scabiosaeus L'Hér. | 9 images |
| Hymenophyllum tunbrigense (L.) Sm. | 125 images |
| Hyparrhenia hirta (L.) Stapf | 874 images |
| Hyparrhenia rufa (Nees) Stapf | 23 images |
| Hypelate trifoliata Sw. | 2 images |
| Hypericum androsaemum L. | 6507 images |
| Hypericum ascyron L. | 32 images |
| Hypericum canadense L. | 3 images |
| Hypericum cistifolium Lam. | 9 images |
| Hypericum crux-andreae (L.) Crantz | 3 images |
| Hypericum densiflorum Pursh | 10 images |
| Hypericum denticulatum Walter | 1 images |
| Hypericum ellipticum Hook. | 8 images |
| Hypericum fasciculatum Lam. | 26 images |
| Hypericum fraseri (Spach) Steud. | 32 images |
| Hypericum frondosum Michx. | 78 images |
| Hypericum gentianoides (L.) Britton, Sterns & Poggenb. | 19 images |
| Hypericum hypericoides (L.) Crantz | 243 images |
| Hypericum kalmianum L. | 146 images |
| Hypericum majus (A.Gray) Britton | 6 images |
| Hypericum mutilum L. | 112 images |
| Hypericum myrtifolium Lam. | 6 images |
| Hypericum perforatum L. | 16587 images |
| Hypericum prolificum L. | 189 images |
| Hypericum punctatum Lam. | 207 images |
| Hypericum sphaerocarpum Michx. | 8 images |
| Hypericum tetrapetalum Lam. | 41 images |
| Hypericum virginicum L. | 21 images |
| Hypochaeris albiflora (Kuntze) Azevêdo-Gonç. & Matzenb. | 47 images |
| Hypochaeris chillensis (Kunth) Britton | 11 images |
| Hypochaeris glabra L. | 2438 images |
| Hypochaeris radicata L. | 9557 images |
| Hypolepis repens (L.) C.Presl | 7 images |
| Hypoxis hirsuta (L.) Coville | 283 images |
| Hypoxis juncea Sm. | 12 images |
| Hyptis alata (Raf.) Shinners | 13 images |
| Hyptis brevipes Poit. | 35 images |
| Hyptis capitata Jacq. | 87 images |
| Ibicella lutea (Lindl.) Van Eselt. | 148 images |
| Ilex ambigua (Michx.) Torr. | 4 images |
| Ilex aquifolium L. | 15584 images |
| Ilex cassine L. | 111 images |
| Ilex collina Alexander | 7 images |
| Ilex coriacea (Pursh) Chapm. | 19 images |
| Ilex cornuta Lindl. & Paxton | 754 images |
| Ilex crenata Thunb. | 510 images |
| Ilex decidua Walter | 319 images |
| Ilex montana Torr. & A.Gray | 18 images |
| Ilex mucronata (L.) M.Powell, Savol. & S.Andrews | 92 images |
| Ilex myrtifolia Walter | 4 images |
| Ilex opaca Aiton | 1329 images |
| Ilex rotunda Thunb. | 52 images |
| Ilex verticillata (L.) A.Gray | 14 images |
| Ilex vomitoria Aiton | 744 images |
| Illicium floridanum J.Ellis | 7 images |
| Illicium parviflorum Michx. ex Vent. | 6 images |
| Impatiens balsamina L. | 2261 images |
| Impatiens capensis Meerb. | 2232 images |
| Impatiens pallida Nutt. | 948 images |
| Impatiens walleriana Hook.f. | 5102 images |
| Imperata brasiliensis Trin. | 1 images |
| Imperata cylindrica (L.) Raeusch. | 610 images |
| Indigofera hirsuta L. | 182 images |
| Indigofera miniata Ortega | 78 images |
| Indigofera spicata Forssk. | 188 images |
| Indigofera suffruticosa Mill. | 76 images |
| Indigofera tinctoria L. | 295 images |
| Inula helenium L. | 2507 images |
| Iodanthus pinnatifidus (Michx.) Steud. | 51 images |
| Ionactis linariifolia (L.) Greene | 20 images |
| Ionopsis utricularioides (Sw.) Lindl. | 83 images |
| Ipheion uniflorum (Graham) Raf. | 2593 images |
| Ipomoea alba L. | 591 images |
| Ipomoea amnicola Morong | 13 images |
| Ipomoea aquatica Forssk. | 330 images |
| Ipomoea asarifolia (Desr.) Roem. & Schult. | 142 images |
| Ipomoea batatas (L.) Lam. | 3831 images |
| Ipomoea cairica (L.) Sweet | 1467 images |
| Ipomoea carnea Jacq. | 921 images |
| Ipomoea coccinea L. | 29 images |
| Ipomoea cordatotriloba Dennst. | 414 images |
| Ipomoea corymbosa (L.) Roth | 28 images |
| Ipomoea hederacea Jacq. | 499 images |
| Ipomoea hederifolia L. | 689 images |
| Ipomoea heptaphylla Sweet | 40 images |
| Ipomoea imperati (Vahl) Griseb. | 236 images |
| Ipomoea indica (Burm.) Merr. | 4184 images |
| Ipomoea lacunosa L. | 333 images |
| Ipomoea lobata (Cerv.) Thell. | 613 images |
| Ipomoea muricata (L.) Jacq. | 5 images |
| Ipomoea nil (L.) Roth | 488 images |
| Ipomoea pes-caprae (L.) R.Br. | 287 images |
| Ipomoea purpurea (L.) Roth | 7508 images |
| Ipomoea quamoclit L. | 677 images |
| Ipomoea sagittata Poir. | 154 images |
| Ipomoea setosa Ker Gawl. | 4 images |
| Ipomoea triloba L. | 269 images |
| Ipomoea violacea L. | 21 images |
| Ipomopsis rubra (L.) Wherry | 136 images |
| Iresine diffusa Humb. & Bonpl. ex Willd. | 3025 images |
| Iresine rhizomatosa Standl. | 2 images |
| Iris × germanica L. | 7400 images |
| Iris brevicaulis Raf. | 16 images |
| Iris cristata Aiton | 180 images |
| Iris domestica (L.) Goldblatt & Mabb. | 945 images |
| Iris ensata Thunb. | 345 images |
| Iris fulva Ker Gawl. | 23 images |
| Iris giganticaerulea Small | 23 images |
| Iris hexagona Walter | 5 images |
| Iris pallida Lam. | 2314 images |
| Iris prismatica Pursh | 2 images |
| Iris pseudacorus L. | 9389 images |
| Iris tridentata Pursh | 2 images |
| Iris verna L. | 42 images |
| Iris versicolor L. | 823 images |
| Iris virginica L. | 117 images |
| Iris xiphium L. | 2093 images |
| Isatis tinctoria L. | 3673 images |
| Ischaemum rugosum Salisb. | 1 images |
| Isoetes lacustris L. | 26 images |
| Isolepis pseudosetacea (Daveau) Gand. | 6 images |
| Isotria medeoloides (Pursh) Raf. | 19 images |
| Itea virginica L. | 89 images |
| Iva annua L. | 115 images |
| Iva asperifolia Less. | 6 images |
| Iva frutescens L. | 64 images |
| Iva imbricata Walter | 13 images |
| Ixeris stolonifera A.Gray | 6 images |
| Jaborosa integrifolia Lam. | 40 images |
| Jacquemontia curtissii Peter ex Hallier f. | 1 images |
| Jacquemontia havanensis (Jacq.) Urb. | 3 images |
| Jacquemontia pentanthos (Jacq.) G.Don | 159 images |
| Jacquemontia tamnifolia (L.) Griseb. | 165 images |
| Jacquinia keyensis Mez | 6 images |
| Jasione montana L. | 5347 images |
| Jasminum mesnyi Hance | 2081 images |
| Jasminum nudiflorum Lindl. | 4916 images |
| Jatropha curcas L. | 587 images |
| Jatropha gossypiifolia L. | 874 images |
| Jatropha integerrima Jacq. | 1688 images |
| Jatropha multifida L. | 886 images |
| Jeffersonia diphylla (L.) Pers. | 114 images |
| Juglans cinerea L. | 433 images |
| Juglans nigra L. | 7361 images |
| Juncus articulatus L. | 675 images |
| Juncus brachycarpus Engelm. | 1 images |
| Juncus brachycephalus (Engelm.) Buchenau | 3 images |
| Juncus bufonius L. | 385 images |
| Juncus compressus Jacq. | 159 images |
| Juncus dichotomus Elliott | 7 images |
| Juncus diffusissimus Buckley | 2 images |
| Juncus dudleyi Wiegand | 7 images |
| Juncus effusus L. | 3371 images |
| Juncus gerardi Loisel. | 100 images |
| Juncus inflexus L. | 732 images |
| Juncus interior Wiegand | 3 images |
| Juncus marginatus Rostk. | 4 images |
| Juncus nodosus L. | 2 images |
| Juncus scirpoides Lam. | 3 images |
| Juncus tenuis Willd. | 525 images |
| Juncus torreyi Coville | 23 images |
| Juncus validus Coville | 1 images |
| Juniperus ashei J.Buchholz | 3 images |
| Juniperus communis L. | 8330 images |
| Juniperus rigida Siebold & Zucc. | 63 images |
| Juniperus virginiana L. | 4429 images |
| Justicia brandegeeana Wassh. & L.B.Sm. | 1557 images |
| Justicia lanceolata (Chapm.) Small | 4 images |
| Justicia spicigera Schltdl. | 220 images |
| Kalanchoe × houghtonii D.B.Ward | 521 images |
| Kalanchoe blossfeldiana Poelln. | 13445 images |
| Kalanchoe crenata (Andrews) Haw. | 2086 images |
| Kalanchoe daigremontiana Raym.-Hamet & H.Perrier | 2455 images |
| Kalanchoe delagoensis Eckl. & Zeyh. | 1682 images |
| Kalanchoe fedtschenkoi Raym.-Hamet & H.Perrier | 694 images |
| Kalanchoe gastonis-bonnieri Raym.-Hamet & H.Perrier | 2 images |
| Kalanchoe laciniata (L.) DC. | 456 images |
| Kalanchoe pinnata (Lam.) Pers. | 1497 images |
| Kallstroemia maxima (L.) Hook. & Arn. | 51 images |
| Kallstroemia parviflora Norton | 2 images |
| Kallstroemia pubescens (G.Don) Dandy | 16 images |
| Kalmia angustifolia L. | 430 images |
| Kalmia buxifolia (P.J.Bergius) Gift & Kron | 14 images |
| Kalmia hirsuta Walter | 4 images |
| Kalmia latifolia L. | 1583 images |
| Kerria japonica (L.) DC. | 7555 images |
| Khaya senegalensis (Desv.) A.Juss. | 185 images |
| Kickxia elatine (L.) Dumort. | 308 images |
| Kickxia spuria (L.) Dumort. | 727 images |
| Koeleria macrantha (Ledeb.) Schult. | 135 images |
| Koeleria spicata (L.) Barberá, Quintanar, Soreng & P.M.Peterson | 87 images |
| Koelreuteria bipinnata Franch. | 168 images |
| Koelreuteria elegans (Seem.) A.C.Sm. | 33 images |
| Koelreuteria paniculata Laxm. | 8560 images |
| Kolkwitzia amabilis Graebn. | 5625 images |
| Kosteletzkya depressa (L.) O.J.Blanch., Fryxell & D.M.Bates | 12 images |
| Kosteletzkya pentacarpos (L.) Ledeb. | 37 images |
| Krameria lanceolata Torr. | 44 images |
| Krigia biflora (Walter) S.F.Blake | 56 images |
| Krigia dandelion Nutt. | 55 images |
| Krigia montana Nutt. | 3 images |
| Krigia occidentalis Nutt. | 3 images |
| Krigia virginica (L.) Willd. | 71 images |
| Krugiodendron ferreum (Vahl) Urb. | 26 images |
| Kummerowia stipulacea (Maxim.) Makino | 3 images |
| Kummerowia striata (Thunb.) Schindl. | 151 images |
| Lachnanthes caroliniana (Lam.) Dandy | 16 images |
| Lactuca biennis (Moench) Fernald | 128 images |
| Lactuca canadensis L. | 384 images |
| Lactuca floridana (L.) Gaertn. | 564 images |
| Lactuca graminifolia Michx. | 8 images |
| Lactuca hirsuta Muhl. ex Nutt. | 23 images |
| Lactuca saligna L. | 350 images |
| Lactuca sativa L. | 4743 images |
| Lactuca serriola L. | 12217 images |
| Lactuca virosa L. | 3398 images |
| Lagenaria siceraria (Molina) Standl. | 781 images |
| Lagerstroemia indica L. | 15461 images |
| Laguncularia racemosa (L.) C.F.Gaertn. | 241 images |
| Lagurus ovatus L. | 3303 images |
| Lamium album L. | 7884 images |
| Lamium amplexicaule L. | 5121 images |
| Lamium galeobdolon (L.) L. | 13149 images |
| Lamium purpureum L. | 16132 images |
| Lantana × strigocamara R.W.Sanders | 2 images |
| Lantana canescens Kunth | 393 images |
| Lantana depressa Small | 7 images |
| Lantana involucrata L. | 165 images |
| Lantana montevidensis (Spreng.) Briq. | 1649 images |
| Laportea aestuans (L.) Chew | 664 images |
| Laportea canadensis (L.) Wedd. | 256 images |
| Lappula occidentalis (S.Watson) Greene | 4 images |
| Lappula squarrosa (Retz.) Dumort. | 208 images |
| Lapsana communis L. | 13335 images |
| Larix decidua Mill. | 6107 images |
| Larix laricina (Du Roi) K.Koch | 213 images |
| Lasiacis divaricata (L.) Hitchc. | 21 images |
| Lasiacis ruscifolia (Kunth) Hitchc. ex Chase | 21 images |
| Lathyrus aphaca L. | 551 images |
| Lathyrus hirsutus L. | 546 images |
| Lathyrus latifolius L. | 9584 images |
| Lathyrus oleraceus Lam. | 4959 images |
| Lathyrus palustris L. | 200 images |
| Lathyrus sylvestris L. | 2430 images |
| Lathyrus tuberosus L. | 1993 images |
| Lathyrus venosus Muhl. ex Willd. | 7 images |
| Launaea intybacea (Jacq.) Beauverd | 15 images |
| Leavenworthia exigua Rollins | 12 images |
| Leavenworthia stylosa A.Gray ex Chapm. | 24 images |
| Leavenworthia uniflora (Michx.) Britton | 3 images |
| Lechea minor L. | 2 images |
| Lechea mucronata Raf. | 8 images |
| Lechea racemulosa Michx. | 2 images |
| Leersia hexandra Sw. | 43 images |
| Leersia lenticularis Michx. | 1 images |
| Leersia oryzoides (L.) Sw. | 244 images |
| Leersia virginica Willd. | 43 images |
| Leitneria floridana Chapm. | 7 images |
| Lemna aequinoctialis Welw. | 59 images |
| Lemna gibba L. | 70 images |
| Lemna minor L. | 896 images |
| Lemna minuta Kunth | 113 images |
| Lemna trisulca L. | 102 images |
| Lemna turionifera Landolt | 20 images |
| Lemna valdiviana Phil. | 7 images |
| Leochilus labiatus (Sw.) Kuntze | 25 images |
| Leonotis nepetifolia (L.) R.Br. | 520 images |
| Leontodon hispidus L. | 3223 images |
| Leontodon saxatilis Lam. | 1099 images |
| Leonurus cardiaca L. | 3293 images |
| Leonurus japonicus Houtt. | 27 images |
| Leonurus sibiricus L. | 264 images |
| Lepidium austrinum Small | 10 images |
| Lepidium campestre (L.) W.T.Aiton | 7 images |
| Lepidium coronopus (L.) Al-Shehbaz | 139 images |
| Lepidium densiflorum Schrad. | 48 images |
| Lepidium didymum L. | 1425 images |
| Lepidium draba L. | 7904 images |
| Lepidium graminifolium L. | 542 images |
| Lepidium oblongum Small | 8 images |
| Lepidium perfoliatum L. | 40 images |
| Lepidium ruderale L. | 231 images |
| Lepidium sativum L. | 819 images |
| Lepidium virginicum L. | 1653 images |
| Leptochloa panicea (Retz.) Ohwi | 5 images |
| Leptochloa scabra Nees | 3 images |
| Leptospron adenanthum (G.Mey.) A.Delgado | 8 images |
| Lespedeza bicolor Turcz. | 457 images |
| Lespedeza capitata Michx. | 114 images |
| Lespedeza cuneata (Dum.Cours.) G.Don | 89 images |
| Lespedeza hirta (L.) Hornem. | 75 images |
| Lespedeza procumbens Michx. | 10 images |
| Lespedeza stuevei Nutt. | 6 images |
| Lespedeza thunbergii (DC.) Nakai | 250 images |
| Lespedeza violacea Pers. | 28 images |
| Lespedeza virginica (L.) Britton | 92 images |
| Leucanthemum vulgare Lam. | 10445 images |
| Leucojum aestivum L. | 2175 images |
| Leucojum vernum L. | 3117 images |
| Leucospora multifida (Michx.) Nutt. | 31 images |
| Leucothoe axillaris (Lam.) D.Don | 128 images |
| Leucothoe fontanesiana (Steud.) Sleumer | 491 images |
| Leucothrinax morrisii (H.Wendl.) C.Lewis & Zona | 16 images |
| Leuzea repens (L.) D.J.N.Hind | 23 images |
| Liatris acidota Engelm. & Gray | 1 images |
| Liatris aspera Michx. | 212 images |
| Liatris chapmanii Torr. & A.Gray | 4 images |
| Liatris cylindracea Michx. | 36 images |
| Liatris elegans (Walter) Michx. | 21 images |
| Liatris elegantula K.Schum. | 5 images |
| Liatris gracilis Pursh | 5 images |
| Liatris microcephala K.Schum. | 1 images |
| Liatris punctata Hook. | 180 images |
| Liatris pycnostachya Michx. | 600 images |
| Liatris scariosa (L.) Willd. | 28 images |
| Liatris spicata (L.) Willd. | 2042 images |
| Liatris squarrosa (L.) Michx. | 69 images |
| Liatris squarrulosa Michx. | 7 images |
| Liatris tenuifolia Nutt. | 8 images |
| Licaria triandra (Sw.) Kosterm. | 6 images |
| Ligularia dentata (A.Gray) H.Hara | 4 images |
| Ligusticum canadense (L.) Britton | 16 images |
| Ligustrum japonicum Thunb. | 2912 images |
| Ligustrum lucidum W.T.Aiton | 9194 images |
| Ligustrum obtusifolium Siebold & Zucc. | 115 images |
| Ligustrum ovalifolium Hassk. | 4598 images |
| Ligustrum quihoui Carrière | 13 images |
| Ligustrum sinense Lour. | 4278 images |
| Ligustrum vulgare L. | 18346 images |
| Lilium canadense L. | 155 images |
| Lilium catesbaei Walter | 22 images |
| Lilium formosanum A.Wallace | 15 images |
| Lilium grayi S.Watson | 6 images |
| Lilium lancifolium Thunb. | 1708 images |
| Lilium longiflorum Thunb. | 588 images |
| Lilium michauxii Poir. | 23 images |
| Lilium michiganense Farw. | 75 images |
| Lilium philadelphicum L. | 116 images |
| Lilium regale E.H.Wilson | 381 images |
| Lilium superbum L. | 93 images |
| Limnophila indica (L.) Druce | 13 images |
| Limnophila sessiliflora (Vahl) Blume | 23 images |
| Limnosciadium pinnatum (DC.) Mathias & Constance | 14 images |
| Limonium carolinianum (Walter) Britton | 63 images |
| Limosella australis R.Br. | 6 images |
| Linaria bipartita (Vent.) Willd. | 1 images |
| Linaria dalmatica (L.) Mill. | 190 images |
| Linaria maroccana Hook.f. | 1604 images |
| Linaria vulgaris Mill. | 16818 images |
| Lindera benzoin (L.) Blume | 836 images |
| Lindernia dubia (L.) Pennell | 215 images |
| Lindernia grandiflora Nutt. | 4 images |
| Linnaea borealis L. | 613 images |
| Linum grandiflorum Desf. | 2658 images |
| Linum imbricatum (Raf.) B.D.Jacks. | 1 images |
| Linum lewisii Pursh | 171 images |
| Linum medium (Planch.) Britton | 20 images |
| Linum rigidum Pursh | 17 images |
| Linum sulcatum Riddell | 4 images |
| Linum usitatissimum L. | 5231 images |
| Linum virginianum L. | 1 images |
| Lipandra polysperma (L.) S.Fuentes, Uotila & Borsch | 1066 images |
| Liparis liliifolia (L.) Rich. ex Lindl. | 11 images |
| Liparis loeselii (L.) Rich. | 188 images |
| Liparis nervosa (Thunb.) Lindl. | 23 images |
| Lippia alba (Mill.) N.E.Br. ex Britton & P.Wilson | 999 images |
| Liquidambar styraciflua L. | 11490 images |
| Liriodendron tulipifera L. | 9545 images |
| Liriope muscari (Decne.) L.H.Bailey | 1745 images |
| Liriope spicata Lour. | 47 images |
| Lithachne pauciflora (Sw.) P.Beauv. | 24 images |
| Lithospermum canescens (Michx.) Lehm. | 124 images |
| Lithospermum incisum Lehm. | 130 images |
| Lithospermum latifolium Michx. | 7 images |
| Lithospermum molle (Michx.) Muhl. | 7 images |
| Lithospermum parviflorum Weakley, Witsell & D.Estes | 2 images |
| Litsea aestivalis (L.) Fernald | 2 images |
| Livistona chinensis (Jacq.) R.Br. ex Mart. | 1241 images |
| Lobelia cardinalis L. | 1821 images |
| Lobelia dortmanna L. | 150 images |
| Lobelia glandulosa Walter | 4 images |
| Lobelia inflata L. | 471 images |
| Lobelia nuttallii Schult. | 1 images |
| Lobelia paludosa Nutt. | 2 images |
| Lobelia puberula Michx. | 94 images |
| Lobelia siphilitica L. | 1127 images |
| Lobelia spicata Lam. | 120 images |
| Lobularia maritima (L.) Desv. | 12662 images |
| Loeflingia squarrosa Nutt. | 2 images |
| Lolium arundinaceum (Schreb.) Darbysh. | 719 images |
| Lolium multiflorum Lam. | 319 images |
| Lolium perenne L. | 2947 images |
| Lolium pratense (Huds.) Darbysh. | 672 images |
| Lolium rigidum Gaudin | 172 images |
| Lolium temulentum L. | 29 images |
| Lonicera canadensis J.Bartram & W.Bartram ex Marshall | 118 images |
| Lonicera dioica L. | 99 images |
| Lonicera flava Sims | 41 images |
| Lonicera fragrantissima Lindl. & Paxton | 1948 images |
| Lonicera japonica Thunb. | 9716 images |
| Lonicera maackii (Rupr.) Maxim. | 2034 images |
| Lonicera reticulata Raf. | 11 images |
| Lonicera sempervirens L. | 1395 images |
| Lonicera tatarica L. | 4886 images |
| Lonicera xylosteum L. | 9800 images |
| Lotus corniculatus L. | 18655 images |
| Lotus tenuis Waldst. & Kit. ex Willd. | 2967 images |
| Ludwigia alternifolia L. | 205 images |
| Ludwigia arcuata Walter | 6 images |
| Ludwigia bonariensis (Micheli) H.Hara | 12 images |
| Ludwigia curtissii Chapm. | 1 images |
| Ludwigia decurrens Walter | 40 images |
| Ludwigia erecta (L.) H.Hara | 107 images |
| Ludwigia glandulosa Walter | 4 images |
| Ludwigia grandiflora (Michx.) Greuter & Burdet | 1157 images |
| Ludwigia leptocarpa (Nutt.) H.Hara | 7 images |
| Ludwigia linearis Walter | 9 images |
| Ludwigia linifolia Poir. | 1 images |
| Ludwigia longifolia (DC.) H.Hara | 21 images |
| Ludwigia octovalvis (Jacq.) P.H.Raven | 646 images |
| Ludwigia palustris (L.) Elliott | 279 images |
| Ludwigia peploides (Kunth) P.H.Raven | 652 images |
| Ludwigia peruviana (L.) H.Hara | 80 images |
| Ludwigia repens J.R.Forst. | 8 images |
| Ludwigia sphaerocarpa Elliott | 1 images |
| Ludwigia suffruticosa Walter | 4 images |
| Ludwigia virgata Michx. | 1 images |
| Luffa acutangula (L.) Roxb. | 209 images |
| Luffa aegyptiaca Mill. | 61 images |
| Lumnitzera racemosa Willd. | 49 images |
| Lunaria annua L. | 20134 images |
| Lunaria rediviva L. | 3418 images |
| Lupinus angustifolius L. | 3099 images |
| Lupinus diffusus Nutt. | 35 images |
| Lupinus perennis L. | 563 images |
| Lupinus subcarnosus Hook. | 24 images |
| Lupinus texensis Hook. | 383 images |
| Lupinus villosus Willd. | 5 images |
| Luzula acuminata Raf. | 14 images |
| Luzula multiflora (Ehrh.) Lej. | 368 images |
| Lycium barbarum L. | 2721 images |
| Lycopodiella appressa (Chapm.) Cranfill | 3 images |
| Lycopodiella cernua (L.) Pic.Serm. | 155 images |
| Lycopodiella inundata (L.) Holub | 146 images |
| Lycopodium annotinum L. | 916 images |
| Lycopodium clavatum L. | 692 images |
| Lycopodium dendroideum Michx. | 168 images |
| Lycopodium digitatum Dill. ex A.Braun | 30 images |
| Lycopodium obscurum L. | 2 images |
| Lycopodium tristachyum Pursh | 90 images |
| Lycopus americanus Muhl. ex W.P.C.Barton | 4 images |
| Lycopus europaeus L. | 5486 images |
| Lycopus rubellus Moench | 8 images |
| Lycopus uniflorus Michx. | 101 images |
| Lycopus virginicus L. | 38 images |
| Lycoris radiata (L'Hér.) Herb. | 314 images |
| Lycoris squamigera Maxim. | 351 images |
| Lygodesmia aphylla DC. | 18 images |
| Lygodium japonicum (Thunb.) Sw. | 102 images |
| Lygodium palmatum (Bernh.) Sw. | 42 images |
| Lyonia ferruginea (Walter) Nutt. | 13 images |
| Lyonia ligustrina (L.) DC. | 11 images |
| Lyonia mariana (L.) D.Don | 7 images |
| Lysimachia arvensis (L.) U.Manns & Anderb. | 9958 images |
| Lysimachia barystachys Bunge | 7 images |
| Lysimachia borealis (Raf.) U.Manns & Anderb. | 521 images |
| Lysimachia ciliata L. | 762 images |
| Lysimachia clethroides Duby | 945 images |
| Lysimachia foemina (Mill.) U.Manns & Anderb. | 2240 images |
| Lysimachia hybrida Michx. | 1 images |
| Lysimachia japonica Thunb. | 4 images |
| Lysimachia lanceolata Walter | 21 images |
| Lysimachia maritima (L.) Galasso, Banfi & Soldano | 362 images |
| Lysimachia minima (L.) U.Manns & Anderb. | 18 images |
| Lysimachia monelli (L.) U.Manns & Anderb. | 668 images |
| Lysimachia nummularia L. | 4007 images |
| Lysimachia ovalis (Ruiz & Pav.) U.Manns & Anderb. | 9 images |
| Lysimachia punctata L. | 8285 images |
| Lysimachia quadriflora Sims | 10 images |
| Lysimachia quadrifolia L. | 179 images |
| Lysimachia terrestris (L.) Britton, Sterns & Poggenb. | 12 images |
| Lysimachia thyrsiflora L. | 321 images |
| Lysimachia vulgaris L. | 8127 images |
| Lythrum alatum Pursh | 48 images |
| Lythrum flagellare Shuttlew. ex Chapm. | 3 images |
| Lythrum hyssopifolia L. | 461 images |
| Lythrum lineare L. | 5 images |
| Lythrum salicaria L. | 23469 images |
| Lythrum thymifolia L. | 11 images |
| Lythrum virgatum L. | 1148 images |
| Macbridea alba Chapm. | 1 images |
| Macleaya cordata (Willd.) R.Br. | 856 images |
| Maclura pomifera (Raf.) C.K.Schneid. | 3775 images |
| Macradenia lutescens R.Br. | 2 images |
| Macroptilium atropurpureum (DC.) Urb. | 272 images |
| Macroptilium lathyroides (L.) Urb. | 350 images |
| Macrothelypteris torresiana (Gaudich.) Ching | 157 images |
| Madia sativa Molina | 76 images |
| Magnolia × soulangeana Soul.-Bod. | 5714 images |
| Magnolia acuminata (L.) L. | 805 images |
| Magnolia ashei Weath. | 2 images |
| Magnolia fraseri Walter | 119 images |
| Magnolia grandiflora L. | 10661 images |
| Magnolia macrophylla Michx. | 459 images |
| Magnolia tripetala (L.) L. | 363 images |
| Magnolia virginiana L. | 2561 images |
| Maianthemum canadense Desf. | 983 images |
| Maianthemum racemosum (L.) Link | 1433 images |
| Maianthemum stellatum (L.) Link | 534 images |
| Malachra capitata (L.) L. | 14 images |
| Malaxis spicata Sw. | 2 images |
| Malaxis unifolia Michx. | 17 images |
| Malus angustifolia (Aiton) Michx. | 30 images |
| Malus baccata (L.) Borkh. | 2267 images |
| Malus coronaria (L.) Mill. | 84 images |
| Malus domestica (Suckow) Borkh. | 6954 images |
| Malus halliana Koehne | 42 images |
| Malus ioensis (Alph.Wood) Britton | 14 images |
| Malus prunifolia (Willd.) Borkh. | 207 images |
| Malus toringo (Siebold) de Vriese | 112 images |
| Malva moschata L. | 4937 images |
| Malva neglecta Wallr. | 5197 images |
| Malva nicaeensis All. | 159 images |
| Malva parviflora L. | 2670 images |
| Malva pusilla Sm. | 1317 images |
| Malva sylvestris L. | 25620 images |
| Malva verticillata L. | 204 images |
| Malvastrum americanum (L.) Torr. | 23 images |
| Malvastrum coromandelianum (L.) Garcke | 734 images |
| Malvastrum hispidum (Pursh) Hochr. | 6 images |
| Malvaviscus arboreus Dill. ex Cav. | 49 images |
| Malvaviscus penduliflorus Moc. & Sessé ex DC. | 287 images |
| Mammea americana L. | 269 images |
| Mangifera indica L. | 5276 images |
| Manihot esculenta Crantz | 1102 images |
| Manihot grahamii Hook. | 103 images |
| Manilkara zapota (L.) P.Royen | 665 images |
| Maranta arundinacea L. | 544 images |
| Marrubium vulgare L. | 4257 images |
| Marshallia caespitosa Nutt. ex DC. | 20 images |
| Marshallia graminifolia (Walter) Small | 4 images |
| Marshallia grandiflora Beadle & F.E.Boynton | 3 images |
| Marsilea hirsuta R.Br. | 1 images |
| Marsilea macropoda Engelm. ex A.Braun | 3 images |
| Marsilea minuta L. | 21 images |
| Marsilea mutica Mett. | 2 images |
| Marsilea quadrifolia L. | 281 images |
| Matelea carolinensis (Jacq.) Woodson | 49 images |
| Matelea decipiens (Alexander) Woodson | 8 images |
| Matelea obliqua (Jacq.) Woodson | 5 images |
| Matelea pubiflora (Decne.) Woodson | 3 images |
| Matricaria chamomilla L. | 9617 images |
| Matricaria discoidea DC. | 3404 images |
| Maxillaria crassifolia (Lindl.) Rchb.f. | 2 images |
| Maxillaria parviflora (Poepp. & Endl.) Garay | 7 images |
| Mayaca fluviatilis Aubl. | 38 images |
| Mazus miquelii Makino | 23 images |
| Mazus pumilus (Burm.f.) Steenis | 256 images |
| Mecardonia acuminata (Walter) Small | 6 images |
| Mecardonia procumbens (Mill.) Small | 193 images |
| Medeola virginiana L. | 310 images |
| Medicago arabica (L.) Huds. | 3302 images |
| Medicago littoralis Rohde ex Loisel. | 470 images |
| Medicago lupulina L. | 6554 images |
| Medicago minima (L.) Bartal. | 28 images |
| Medicago monspeliaca (L.) Trautv. | 120 images |
| Medicago orbicularis (L.) Bartal. | 722 images |
| Medicago polymorpha L. | 2657 images |
| Medicago sativa L. | 15829 images |
| Meehania cordata (Nutt.) Britton | 8 images |
| Megathyrsus maximus (Jacq.) B.K.Simon & S.W.L.Jacobs | 172 images |
| Melaleuca citrina (Curtis) Dum.Cours. | 11001 images |
| Melaleuca linariifolia Sm. | 130 images |
| Melaleuca quinquenervia (Cav.) S.T.Blake | 394 images |
| Melaleuca viminalis (Sol. ex Gaertn.) Byrnes | 1627 images |
| Melampodium divaricatum (Rich.) DC. | 107 images |
| Melampodium sericeum Lag. | 4 images |
| Melampyrum lineare Lam. | 147 images |
| Melanthera nivea (L.) Small | 104 images |
| Melanthera parvifolia Small | 1 images |
| Melanthium virginicum L. | 9 images |
| Melastoma malabathricum L. | 711 images |
| Melia azedarach L. | 10324 images |
| Melica mutica Walter | 20 images |
| Melica nitens (Scribn.) Nutt. ex Piper | 3 images |
| Melicoccus bijugatus Jacq. | 242 images |
| Melilotus albus Medik. | 6713 images |
| Melilotus indicus (L.) All. | 2235 images |
| Melilotus officinalis (L.) Lam. | 3696 images |
| Melinis minutiflora P.Beauv. | 2 images |
| Melinis repens (Willd.) Zizka | 502 images |
| Melissa officinalis L. | 13150 images |
| Melochia corchorifolia L. | 83 images |
| Melochia nodiflora Sw. | 41 images |
| Melochia pyramidata L. | 140 images |
| Melochia tomentosa L. | 85 images |
| Melochia villosa (Mill.) Fawc. & Rendle | 75 images |
| Melothria pendula L. | 493 images |
| Menispermum canadense L. | 222 images |
| Mentha × dumetorum Schult. | 1 images |
| Mentha × gracilis Sole | 12 images |
| Mentha × piperita L. | 3108 images |
| Mentha × rotundifolia (L.) Huds. | 909 images |
| Mentha × villosa Huds. | 310 images |
| Mentha arvensis L. | 2936 images |
| Mentha canadensis L. | 11 images |
| Mentha spicata L. | 8521 images |
| Mentha suaveolens Ehrh. | 10757 images |
| Mentzelia oligosperma Nutt. ex Sims | 1 images |
| Menyanthes trifoliata L. | 1754 images |
| Mercurialis annua L. | 6804 images |
| Mertensia virginica (L.) Pers. ex Link | 879 images |
| Mesosphaerum pectinatum (L.) Kuntze | 18 images |
| Metopium toxiferum (L.) Krug & Urb. | 22 images |
| Miconia bicolor (Mill.) Triana | 9 images |
| Micranthemum umbrosum (J.F.Gmel.) S.F.Blake | 22 images |
| Micranthes micranthidifolia (Haw.) Small | 8 images |
| Micranthes pensylvanica (L.) Haw. | 30 images |
| Micranthes petiolaris (Raf.) Bush | 18 images |
| Micranthes texana (Buckley) Small | 10 images |
| Micranthes virginiensis (Michx.) Small | 100 images |
| Microseris cuspidata (Pursh) Sch.Bip. | 14 images |
| Microstachys corniculata (Vahl) A.Juss. ex Griseb. | 15 images |
| Microstegium vimineum (Trin.) A.Camus | 87 images |
| Mikania cordifolia (L.f.) Willd. | 67 images |
| Mikania micrantha Kunth | 249 images |
| Mikania scandens (L.) Willd. | 278 images |
| Milium effusum L. | 323 images |
| Mimosa pigra L. | 333 images |
| Mimosa quadrivalvis L. | 272 images |
| Mimosa strigillosa Torr. & A.Gray | 3 images |
| Mimulus alatus Aiton | 108 images |
| Mimulus ringens L. | 435 images |
| Mimusops elengi L. | 294 images |
| Mirabilis albida (Walter) Heimerl | 45 images |
| Mirabilis jalapa L. | 14813 images |
| Mirabilis linearis (Pursh) Heimerl | 13 images |
| Mirabilis nyctaginea (Michx.) MacMill. | 194 images |
| Miscanthus floridulus (Labill.) Warb. ex K.Schum. & Lauterb. | 9 images |
| Miscanthus sacchariflorus (Maxim.) Benth. & Hook.f. ex Franch. | 42 images |
| Miscanthus sinensis Andersson | 3308 images |
| Misopates orontium (L.) Raf. | 1712 images |
| Mitchella repens L. | 891 images |
| Mitella diphylla L. | 125 images |
| Mitracarpus hirtus (L.) DC. | 332 images |
| Mitreola petiolata (J.F.Gmel.) Torr. & A.Gray | 2 images |
| Modiola caroliniana (L.) G.Don | 183 images |
| Moehringia lateriflora (L.) Fenzl | 42 images |
| Moenchia erecta (L.) G.Gaertn., B.Mey. & Scherb. | 59 images |
| Mollugo verticillata L. | 317 images |
| Momordica balsamina L. | 244 images |
| Momordica charantia L. | 1821 images |
| Monarda bradburiana Beck | 11 images |
| Monarda citriodora Cerv. ex Lag. | 358 images |
| Monarda clinopodia L. | 76 images |
| Monarda didyma L. | 3004 images |
| Monarda fistulosa L. | 2130 images |
| Monarda media Willd. | 16 images |
| Monarda punctata L. | 345 images |
| Monarda russeliana Nutt. ex Sims | 17 images |
| Mononeuria nuttallii (Torr. & A.Gray) Dillenb. & Kadereit | 3 images |
| Mononeuria patula (Michx.) Dillenb. & Kadereit | 27 images |
| Monotropa hypopitys L. | 1051 images |
| Monotropa uniflora L. | 1084 images |
| Monotropsis odorata Schwein. | 6 images |
| Montia linearis (Douglas) Greene | 13 images |
| Moorochloa eruciformis (Sm.) Veldkamp | 9 images |
| Morinda royoc L. | 20 images |
| Moringa oleifera Lam. | 1819 images |
| Morisonia cynophallophora (L.) Christenh. & Byng | 51 images |
| Morisonia flexuosa L. | 237 images |
| Morus alba L. | 11383 images |
| Morus rubra L. | 2565 images |
| Mosla dianthera (Buch.-Ham. ex Roxb.) Maxim. | 1 images |
| Mucuna sloanei Fawc. & Rendle | 47 images |
| Muhlenbergia capillaris (Lam.) Trin. | 215 images |
| Muhlenbergia emersleyi Vasey | 1 images |
| Muhlenbergia frondosa (Poir.) Fernald | 8 images |
| Muhlenbergia glabrifloris Scribn. | 1 images |
| Muhlenbergia glomerata (Willd.) Trin. | 1 images |
| Muhlenbergia mexicana (L.) Trin. | 5 images |
| Muhlenbergia schreberi J.F.Gmel. | 5 images |
| Mummenhoffia alliacea (L.) Esmailbegi & Al-Shehbaz | 254 images |
| Muntingia calabura L. | 762 images |
| Murdannia keisak (Hassk.) Hand.-Mazz. | 12 images |
| Murdannia nudiflora (L.) Brenan | 134 images |
| Murraya paniculata (L.) Jack | 2177 images |
| Musa × paradisiaca L. | 1497 images |
| Musa acuminata Colla | 2715 images |
| Muscari armeniacum H.J.Veitch | 26 images |
| Muscari botryoides (L.) Mill. | 5391 images |
| Muscari comosum (L.) Mill. | 10768 images |
| Muscari neglectum Guss. ex Ten. | 10632 images |
| Myagrum perfoliatum L. | 150 images |
| Myosotis arvensis (L.) Hill | 2790 images |
| Myosotis discolor Pers. | 803 images |
| Myosotis laxa Lehm. | 292 images |
| Myosotis macrosperma Engelm. | 87 images |
| Myosotis scorpioides L. | 5625 images |
| Myosotis stricta Link ex Roem. & Schult. | 632 images |
| Myosotis sylvatica Ehrh. ex Hoffm. | 412 images |
| Myosotis verna Nutt. | 12 images |
| Myrcia zuzygium (L.) A.R.Lourenço & E.Lucas | 1 images |
| Myrcianthes fragrans (Sw.) McVaugh | 44 images |
| Myrica caroliniensis Mill. | 9 images |
| Myrica cerifera L. | 581 images |
| Myrica gale L. | 648 images |
| Myrica pensylvanica Mirb. | 68 images |
| Myriophyllum aquaticum (Vell.) Verdc. | 567 images |
| Myriophyllum heterophyllum Michx. | 9 images |
| Myriophyllum sibiricum Kom. | 7 images |
| Myriophyllum spicatum L. | 287 images |
| Myriophyllum verticillatum L. | 67 images |
| Myriopus volubilis (L.) Small | 5 images |
| Myroxylon balsamum (L.) Harms | 18 images |
| Myrsine cubana A.DC. | 1 images |
| Myrtus communis L. | 9022 images |
| Nabalus albus (L.) Hook. | 148 images |
| Nabalus altissimus (L.) Hook. | 3 images |
| Nabalus serpentarius (Pursh) Hook. | 8 images |
| Najas gracillima (A.Braun ex Engelm.) Magnus | 1 images |
| Najas guadalupensis (Spreng.) Magnus | 14 images |
| Najas marina L. | 114 images |
| Najas minor All. | 22 images |
| Nama jamaicensis L. | 2 images |
| Nandina domestica Thunb. | 7075 images |
| Narcissus × compressus Haw. | 6 images |
| Narcissus × incomparabilis Mill. | 79 images |
| Narcissus × medioluteus Mill. | 567 images |
| Narcissus × odorus L. | 15 images |
| Narcissus assoanus Dufour ex Schult. & Schult.f. | 381 images |
| Narcissus bulbocodium L. | 1125 images |
| Narcissus jonquilla L. | 2007 images |
| Narcissus papyraceus Ker Gawl. | 1252 images |
| Narcissus poeticus L. | 2873 images |
| Narcissus pseudonarcissus L. | 9420 images |
| Narcissus tazetta L. | 3108 images |
| Narthecium americanum Ker Gawl. | 1 images |
| Nassella neesiana (Trin. & Rupr.) Barkworth | 23 images |
| Nassella trichotoma (Nees) Hack. & Arechav. | 13 images |
| Nasturtium microphyllum (Boenn.) Rchb. | 61 images |
| Nasturtium officinale W.T.Aiton | 643 images |
| Navarretia intertexta (Benth.) Hook. | 26 images |
| Neillia incisa (Thunb.) S.H.Oh | 349 images |
| Nelsonia canescens (Lam.) Spreng. | 59 images |
| Nelumbo lutea (Willd.) Pers. | 5 images |
| Nelumbo nucifera Gaertn. | 1908 images |
| Nemastylis floridana Small | 6 images |
| Nemastylis geminiflora Nutt. | 39 images |
| Nemophila aphylla (L.) Brummitt | 29 images |
| Nemophila phacelioides W.P.C.Barton | 102 images |
| Neottia bifolia (Raf.) Baumbach | 1 images |
| Neottia cordata (L.) Rich. | 212 images |
| Neottia smallii (Wiegand) Szlach. | 2 images |
| Nepeta cataria L. | 3649 images |
| Nephrolepis × averyi Nauman | 1 images |
| Nephrolepis biserrata (Sw.) Schott | 1072 images |
| Nephrolepis brownii (Desv.) Hovenkamp & Miyam. | 28 images |
| Nephrolepis cordifolia (L.) C.Presl | 650 images |
| Nephrolepis exaltata (L.) Schott | 2919 images |
| Neptunia lutea (Leavenw.) Benth. | 13 images |
| Neptunia oleracea Lour. | 55 images |
| Neptunia pubescens Benth. | 23 images |
| Nerium oleander L. | 22949 images |
| Neviusia alabamensis A.Gray | 30 images |
| Neyraudia reynaudiana (Kunth) Keng ex Hitchc. | 18 images |
| Nicandra physalodes (L.) Gaertn. | 2855 images |
| Nicotiana glauca Graham | 3555 images |
| Nicotiana longiflora Cav. | 76 images |
| Nicotiana repanda Willd. ex Lehm. | 1 images |
| Nicotiana tabacum L. | 2765 images |
| Nigella damascena L. | 12714 images |
| Noccaea perfoliata (L.) Al-Shehbaz | 1192 images |
| Nolina brittoniana Nash | 4 images |
| Nolina georgiana Michx. | 1 images |
| Noronhia emarginata (Lam.) Poir. | 89 images |
| Nothoscordum bivalve (L.) Britton | 617 images |
| Nothoscordum gracile (Aiton) Stearn | 733 images |
| Nuttallanthus canadensis (L.) D.A.Sutton | 15 images |
| Nuttallanthus floridanus (Chapm.) D.A.Sutton | 202 images |
| Nymphaea ampla (Salisb.) DC. | 153 images |
| Nymphaea elegans Hook. | 25 images |
| Nymphaea lotus L. | 185 images |
| Nymphaea mexicana Zucc. | 172 images |
| Nymphaea nouchali Burm.f. | 613 images |
| Nymphaea odorata Aiton | 402 images |
| Nymphoides cristata (Roxb.) Kuntze | 29 images |
| Nymphoides humboldtiana (Kunth) Kuntze | 3 images |
| Nymphoides indica (L.) Kuntze | 141 images |
| Nymphoides peltata (S.G.Gmel.) Kuntze | 441 images |
| Nyssa aquatica L. | 48 images |
| Nyssa biflora Walter | 5 images |
| Nyssa sylvatica Marshall | 962 images |
| Obolaria virginica L. | 66 images |
| Ochna atropurpurea DC. | 11 images |
| Ochna serrulata (Hochst.) Walp. | 75 images |
| Ocimum campechianum Mill. | 228 images |
| Oclemena acuminata (Michx.) Greene | 312 images |
| Odontonema cuspidatum (Nees) Kuntze | 885 images |
| Odontonema tubaeforme (Bertol.) Kuntze | 128 images |
| Oenanthe aquatica (L.) Poir. | 333 images |
| Oenanthe javanica (Blume) DC. | 55 images |
| Oenanthe pimpinelloides L. | 635 images |
| Oenothera argillicola Mack. | 9 images |
| Oenothera biennis L. | 14283 images |
| Oenothera demareei (P.H.Raven & D.P.Greg.) W.L.Wagner & Hoch | 6 images |
| Oenothera drummondii Hook. | 198 images |
| Oenothera filiformis (Small) W.L.Wagner & Hoch | 4 images |
| Oenothera filipes (Spach) W.L.Wagner & Hoch | 8 images |
| Oenothera fruticosa L. | 1502 images |
| Oenothera gaura W.L.Wagner & Hoch | 1982 images |
| Oenothera glazioviana Micheli | 7360 images |
| Oenothera grandiflora L'Hér. | 1 images |
| Oenothera grandis Smyth | 2 images |
| Oenothera humifusa Nutt. | 7 images |
| Oenothera laciniata Hill | 552 images |
| Oenothera lindheimeri (Engelm. & A.Gray) W.L.Wagner & Hoch | 7425 images |
| Oenothera linifolia Nutt. | 14 images |
| Oenothera macrocarpa Nutt. | 619 images |
| Oenothera oakesiana (A.Gray) J.W.Robbins ex S.Watson | 6 images |
| Oenothera parviflora L. | 1245 images |
| Oenothera perennis L. | 5 images |
| Oenothera pilosella Raf. | 31 images |
| Oenothera rhombipetala Nutt. | 6 images |
| Oenothera simulans (Small) W.L.Wagner & Hoch | 9 images |
| Oenothera speciosa Nutt. | 2961 images |
| Oenothera suffrutescens (Moc. & Sessé ex Ser.) W.L.Wagner & Hoch | 84 images |
| Oenothera tetragona Roth | 10 images |
| Oenothera triloba Nutt. | 83 images |
| Oenothera villosa Thunb. | 70 images |
| Oldenlandia corymbosa L. | 451 images |
| Oldenlandia salzmannii (DC.) Benth. & Hook.f. ex B.D.Jacks. | 9 images |
| Oloptum miliaceum (L.) Röser & Hamasha | 734 images |
| Oncidium ensatum Lindl. | 7 images |
| Oncoba spinosa Forssk. | 21 images |
| Onoclea sensibilis L. | 1563 images |
| Onopordum acanthium L. | 4861 images |
| Ophioglossum crotalophoroides Walter | 4 images |
| Ophioglossum engelmannii Prantl | 12 images |
| Ophioglossum pendulum L. | 39 images |
| Ophioglossum petiolatum Hook. | 10 images |
| Ophioglossum pusillum Raf. | 4 images |
| Ophioglossum vulgatum L. | 341 images |
| Ophiopogon japonicus (Thunb.) Ker Gawl. | 442 images |
| Oplismenus burmanni (Retz.) P.Beauv. | 37 images |
| Oplismenus compositus (L.) P.Beauv. | 35 images |
| Oplismenus hirtellus (L.) P.Beauv. | 11 images |
| Oplismenus undulatifolius (Ard.) P.Beauv. | 124 images |
| Opuntia cespitosa Raf. | 1 images |
| Opuntia cochenillifera (L.) Mill. | 419 images |
| Opuntia dillenii (Ker Gawl.) Haw. | 193 images |
| Opuntia engelmannii Salm-Dyck ex Engelm. | 638 images |
| Opuntia ficus-indica (L.) Mill. | 6517 images |
| Opuntia humifusa (Raf.) Raf. | 1137 images |
| Opuntia macrorhiza Engelm. | 69 images |
| Opuntia monacanthos (Willd.) Haw. | 4 images |
| Opuntia stricta (Haw.) Haw. | 1392 images |
| Orbexilum onobrychis (Nutt.) Rydb. | 1 images |
| Oreojuncus trifidus (L.) Záv.Drábk. & Kirschner | 190 images |
| Origanum vulgare L. | 19284 images |
| Ornithogalum nutans L. | 1261 images |
| Ornithogalum umbellatum L. | 8426 images |
| Orobanche ludoviciana Nutt. | 8 images |
| Orobanche minor Sm. | 2101 images |
| Orobanche ramosa L. | 458 images |
| Orobanche uniflora L. | 114 images |
| Orontium aquaticum L. | 134 images |
| Orthilia secunda (L.) House | 466 images |
| Oryza rufipogon Griff. | 1 images |
| Oryza sativa L. | 457 images |
| Osmorhiza claytonii (Michx.) C.B.Clarke | 25 images |
| Osmorhiza longistylis (Torr.) DC. | 342 images |
| Osmunda claytoniana L. | 395 images |
| Osmunda spectabilis Willd. | 4 images |
| Osmundastrum cinnamomeum (L.) C.Presl | 153 images |
| Ostrya virginiana (Mill.) K.Koch | 323 images |
| Ottelia alismoides (L.) Pers. | 20 images |
| Oxalis articulata Savigny | 5202 images |
| Oxalis corniculata L. | 9015 images |
| Oxalis debilis Kunth | 2912 images |
| Oxalis dillenii Jacq. | 2426 images |
| Oxalis grandis Small | 29 images |
| Oxalis hispidula Zucc. | 31 images |
| Oxalis latifolia Kunth | 2518 images |
| Oxalis macrantha (Trel.) Small | 12 images |
| Oxalis montana Raf. | 56 images |
| Oxalis pes-caprae L. | 7662 images |
| Oxalis stricta L. | 2338 images |
| Oxalis triangularis A.St.-Hil. | 769 images |
| Oxalis violacea L. | 571 images |
| Oxybasis glauca (L.) S.Fuentes, Uotila & Borsch | 246 images |
| Oxybasis urbica (L.) S.Fuentes, Uotila & Borsch | 44 images |
| Oxydendrum arboreum (L.) DC. | 370 images |
| Oxypolis rigidior (L.) Raf. | 22 images |
| Pachyrhizus erosus (L.) Urb. | 114 images |
| Pachysandra procumbens Michx. | 50 images |
| Pachysandra terminalis Siebold & Zucc. | 1594 images |
| Packera anonyma (Alph.Wood) W.A.Weber & Á.Löve | 1 images |
| Packera aurea (L.) Á.Löve & D.Löve | 158 images |
| Packera dubia (Spreng.) Trock & Mabb. | 8 images |
| Packera glabella (Poir.) C.Jeffrey | 229 images |
| Packera millefolium (Torr. & A.Gray) W.A.Weber & Á.Löve | 1 images |
| Paederia foetida L. | 140 images |
| Paepalanthus anceps (Walter) Christenh. & Byng | 1 images |
| Palafoxia integrifolia Torr. & A.Gray | 6 images |
| Palafoxia texana DC. | 13 images |
| Palustricodon aparinoides (Pursh) Morin | 20 images |
| Panax quinquefolius L. | 95 images |
| Panax trifolius L. | 143 images |
| Pancratium maritimum L. | 4820 images |
| Pandanus odorifer (Forssk.) Kuntze | 8 images |
| Panicum amarum Elliott | 10 images |
| Panicum capillare L. | 663 images |
| Panicum dichotomiflorum Michx. | 79 images |
| Panicum miliaceum L. | 1212 images |
| Panicum repens L. | 80 images |
| Panicum sumatrense Roth | 1 images |
| Panicum virgatum L. | 933 images |
| Papaver dubium L. | 3642 images |
| Papaver orientale L. | 4321 images |
| Papaver rhoeas L. | 12026 images |
| Papaver somniferum L. | 10152 images |
| Parapholis cylindrica (Willd.) Romero Zarco | 20 images |
| Parapholis incurva (L.) C.E.Hubb. | 84 images |
| Parentucellia viscosa (L.) Caruel | 956 images |
| Parietaria floridana Nutt. | 63 images |
| Parietaria judaica L. | 5179 images |
| Parietaria officinalis L. | 2863 images |
| Parietaria pensylvanica Muhl. ex Willd. | 180 images |
| Parkinsonia aculeata L. | 2027 images |
| Parnassia asarifolia Vent. | 5 images |
| Parnassia grandifolia DC. | 8 images |
| Paronychia argyrocoma (Michx.) Nutt. | 18 images |
| Paronychia fastigiata (Raf.) Fernald | 7 images |
| Paronychia virginica Spreng. | 12 images |
| Parthenium hysterophorus L. | 1086 images |
| Parthenium integrifolium L. | 187 images |
| Parthenocissus quinquefolia (L.) Planch. | 15646 images |
| Parthenocissus tricuspidata (Siebold & Zucc.) Planch. | 3859 images |
| Parthenocissus vitacea (Knerr) Hitchc. | 3 images |
| Pascalia glauca Ortega | 37 images |
| Paspalum bifidum (Bertol.) Nash | 7 images |
| Paspalum conjugatum P.J.Bergius | 31 images |
| Paspalum dilatatum Poir. | 1171 images |
| Paspalum distichum L. | 252 images |
| Paspalum fimbriatum Kunth | 22 images |
| Paspalum floridanum Michx. | 5 images |
| Paspalum malacophyllum Trin. | 4 images |
| Paspalum notatum Flüggé | 42 images |
| Paspalum paniculatum L. | 63 images |
| Paspalum plicatulum Michx. | 31 images |
| Paspalum quadrifarium Lam. | 6 images |
| Paspalum repens P.J.Bergius | 167 images |
| Paspalum scrobiculatum L. | 21 images |
| Paspalum setaceum Michx. | 13 images |
| Paspalum urvillei Steud. | 90 images |
| Paspalum vaginatum Sw. | 34 images |
| Paspalum virgatum L. | 39 images |
| Passiflora biflora Lam. | 71 images |
| Passiflora ciliata Aiton | 21 images |
| Passiflora edulis Sims | 3518 images |
| Passiflora incarnata L. | 489 images |
| Passiflora lutea L. | 294 images |
| Passiflora miniata Vanderpl. | 120 images |
| Passiflora multiflora L. | 7 images |
| Passiflora pallida L. | 14 images |
| Passiflora sexflora Juss. | 3 images |
| Passiflora vitifolia Kunth | 452 images |
| Pastinaca sativa L. | 6273 images |
| Paulownia tomentosa (Thunb.) Steud. | 8962 images |
| Pavonia hastata Cav. | 159 images |
| Pavonia paludicola Nicolson ex Fryxell | 3 images |
| Pavonia spinifex (L.) Cav. | 55 images |
| Paxistima canbyi A.Gray | 8 images |
| Pecluma plumula (Humb. & Bonpl. ex Willd.) M.G.Price | 78 images |
| Pectis humifusa Sw. | 20 images |
| Pectis linifolia L. | 2 images |
| Pectis prostrata Cav. | 32 images |
| Pedicularis canadensis L. | 198 images |
| Pedicularis lanceolata Michx. | 22 images |
| Pediomelum rhombifolium (Torr. & A.Gray) Rydb. | 1 images |
| Peltandra sagittifolia (Michx.) Morong | 1 images |
| Peltandra virginica (L.) Schott | 145 images |
| Peltophorum pterocarpum (DC.) Backer ex K.Heyne | 146 images |
| Penstemon arkansanus Pennell | 23 images |
| Penstemon australis Small | 2 images |
| Penstemon calycosus Small | 28 images |
| Penstemon canescens Britton | 44 images |
| Penstemon cobaea Nutt. | 161 images |
| Penstemon digitalis Nutt. ex Sims | 1109 images |
| Penstemon hirsutus (L.) Willd. | 139 images |
| Penstemon laevigatus Aiton | 5 images |
| Penstemon laxiflorus Pennell | 15 images |
| Penstemon murrayanus Hook. | 8 images |
| Penstemon pallidus Small | 33 images |
| Penstemon smallii A.Heller | 13 images |
| Penstemon tenuiflorus Pennell | 20 images |
| Penstemon tenuis Small | 37 images |
| Pentalinon luteum (L.) B.F.Hansen & Wunderlin | 41 images |
| Pentanema britannica (L.) D.Gut.Larr., Santos-Vicente, Anderb., E.Rico & M.M.Mart.Ort. | 1042 images |
| Penthorum sedoides L. | 44 images |
| Pentodon pentandrus (Schumach. & Thonn.) Vatke | 4 images |
| Peperomia alata Ruiz & Pav. | 1 images |
| Peperomia amplexicaulis (Sw.) A.Dietr. | 3 images |
| Peperomia emarginella (Sw. ex Wikstr.) C.DC. | 4 images |
| Peperomia glabella (Sw.) A.Dietr. | 143 images |
| Peperomia humilis A.Dietr. | 32 images |
| Peperomia magnoliifolia (Jacq.) A.Dietr. | 1524 images |
| Peperomia obtusifolia (L.) A.Dietr. | 2744 images |
| Peperomia pellucida (L.) Kunth | 632 images |
| Peperomia spathulifolia Small | 1 images |
| Pereskia aculeata Mill. | 1118 images |
| Perilla frutescens (L.) Britton | 2436 images |
| Periploca graeca L. | 311 images |
| Persea americana Mill. | 7516 images |
| Persea borbonia (L.) Spreng. | 60 images |
| Persea palustris (Raf.) Sarg. | 3 images |
| Persicaria amphibia (L.) Delarbre | 393 images |
| Persicaria capitata (Buch.-Ham. ex D.Don) H.Gross | 2094 images |
| Persicaria careyi (Olney) Greene | 1 images |
| Persicaria chinensis (L.) H.Gross | 137 images |
| Persicaria filiformis (Thunb.) Nakai | 2 images |
| Persicaria glabra (Willd.) M.Gómez | 18 images |
| Persicaria hydropiper (L.) Delarbre | 649 images |
| Persicaria hydropiperoides (Michx.) Small | 18 images |
| Persicaria lapathifolia (L.) Delarbre | 3166 images |
| Persicaria longiseta (Bruijn) Kitag. | 7 images |
| Persicaria maculosa Gray | 9311 images |
| Persicaria meisneriana (Cham. & Schltdl.) M.Gómez | 2 images |
| Persicaria minor (Huds.) Opiz | 304 images |
| Persicaria nepalensis (Meisn.) H.Gross | 35 images |
| Persicaria orientalis (L.) Spach | 2694 images |
| Persicaria pensylvanica (L.) M.Gómez | 50 images |
| Persicaria perfoliata (L.) H.Gross | 11 images |
| Persicaria punctata (Elliott) Small | 77 images |
| Persicaria sagittata (L.) H.Gross | 19 images |
| Persicaria virginiana (L.) Gaertn. | 1005 images |
| Petitia domingensis Jacq. | 2 images |
| Petiveria alliacea L. | 576 images |
| Petrea volubilis L. | 1649 images |
| Petrorhagia dubia (Raf.) G.López & Romo | 62 images |
| Petrorhagia prolifera (L.) P.W.Ball & Heywood | 1182 images |
| Petrorhagia saxifraga (L.) Link | 1682 images |
| Petrosedum rupestre (L.) P.V.Heath | 5880 images |
| Petroselinum crispum (Mill.) Fuss | 2509 images |
| Petunia axillaris (Lam.) Britton, Sterns & Poggenb. | 77 images |
| Petunia integrifolia (Hook.) Schinz & Thell. | 110 images |
| Peucedanum ostruthium (L.) W.D.J.Koch | 1073 images |
| Phacelia bipinnatifida Michx. | 120 images |
| Phacelia dubia (L.) Trel. | 5 images |
| Phacelia fimbriata Michx. | 12 images |
| Phacelia hirsuta Nutt. | 11 images |
| Phacelia purshii Buckley | 111 images |
| Phalaris angusta Nees ex Trin. | 6 images |
| Phalaris aquatica L. | 230 images |
| Phalaris arundinacea L. | 2791 images |
| Phalaris brachystachys Link | 9 images |
| Phalaris canariensis L. | 454 images |
| Phalaris minor Retz. | 172 images |
| Phalaris paradoxa L. | 78 images |
| Pharus lappulaceus Aubl. | 14 images |
| Phaseolus coccineus L. | 719 images |
| Phaseolus polystachios (L.) Britton, Sterns & Poggenb. | 3 images |
| Phegopteris connectilis (Michx.) Watt | 707 images |
| Phellodendron amurense Rupr. | 323 images |
| Phemeranthus calycinus (Engelm.) Kiger | 12 images |
| Phemeranthus mengesii (W.Wolf) Kiger | 4 images |
| Phemeranthus parviflorus (Nutt.) Kiger | 7 images |
| Phemeranthus teretifolius (Pursh) Raf. | 8 images |
| Philadelphus coronarius L. | 18965 images |
| Philadelphus hirsutus Nutt. | 21 images |
| Philadelphus inodorus L. | 167 images |
| Philadelphus pubescens Loisel. | 829 images |
| Phlebodium aureum (L.) J.Sm. | 620 images |
| Phlebodium pseudoaureum (Cav.) Lellinger | 91 images |
| Phleum pratense L. | 2550 images |
| Phleum subulatum (Savi) Asch. & Graebn. | 5 images |
| Phlox amoena Sims | 36 images |
| Phlox amplifolia Britton | 16 images |
| Phlox buckleyi Wherry | 3 images |
| Phlox carolina L. | 42 images |
| Phlox cuspidata Scheele | 9 images |
| Phlox divaricata L. | 1011 images |
| Phlox drummondii Hook. | 1413 images |
| Phlox glaberrima L. | 44 images |
| Phlox maculata L. | 1505 images |
| Phlox paniculata L. | 5991 images |
| Phlox pilosa L. | 174 images |
| Phlox stolonifera Sims | 54 images |
| Phlox subulata L. | 4967 images |
| Phoebanthus grandiflorus S.F.Blake | 4 images |
| Phoenix reclinata Jacq. | 1427 images |
| Phoradendron leucarpum (Raf.) Reveal & M.C.Johnst. | 3 images |
| Photinia glabra (Thunb.) Jacob-Makoy | 6 images |
| Photinia serratifolia (Desf.) Kalkman | 2734 images |
| Phragmites australis (Cav.) Trin. ex Steud. | 6445 images |
| Phryma leptostachya L. | 156 images |
| Phyla lanceolata (Michx.) Greene | 124 images |
| Phyla nodiflora (L.) Greene | 1495 images |
| Phyllanthus acidus (L.) Skeels | 285 images |
| Phyllanthus amarus Schumach. & Thonn. | 468 images |
| Phyllanthus angustifolius (Sw.) Sw. | 32 images |
| Phyllanthus caroliniensis Walter | 18 images |
| Phyllanthus fluitans Benth. ex Müll.Arg. | 4 images |
| Phyllanthus polygonoides Nutt. ex Spreng. | 29 images |
| Phyllanthus tenellus Roxb. | 748 images |
| Phyllanthus urinaria L. | 475 images |
| Phyllostachys aurea (André) Rivière & C.Rivière | 1359 images |
| Phyllostachys aureosulcata McClure | 285 images |
| Phyllostachys bissetii McClure | 8 images |
| Phyllostachys edulis (Carrière) J.Houz. | 13 images |
| Phyllostachys nigra (Lodd. ex Lindl.) Munro | 1283 images |
| Phyllostachys reticulata (Rupr.) K.Koch | 98 images |
| Phyllostachys sulphurea (Carrière) Rivière & C.Rivière | 315 images |
| Phymatosorus scolopendria (Burm.f.) Pic.Serm. | 632 images |
| Physalis acutifolia (Miers) Sandwith | 3 images |
| Physalis angulata L. | 1004 images |
| Physalis angustifolia Nutt. | 14 images |
| Physalis arenicola Kearney | 1 images |
| Physalis heterophylla Nees | 124 images |
| Physalis longifolia Nutt. | 221 images |
| Physalis mollis Nutt. | 8 images |
| Physalis philadelphica Lam. | 662 images |
| Physalis pubescens L. | 172 images |
| Physalis pumila Nutt. | 10 images |
| Physalis virginiana Mill. | 2 images |
| Physalis walteri Nutt. | 12 images |
| Physocarpus opulifolius (L.) Maxim. | 4494 images |
| Physostegia angustifolia Fernald | 8 images |
| Physostegia digitalis Small | 4 images |
| Physostegia virginiana (L.) Benth. | 2007 images |
| Phytolacca americana L. | 18422 images |
| Phytolacca bogotensis Kunth | 738 images |
| Phytolacca icosandra L. | 104 images |
| Picea abies (L.) H.Karst. | 9969 images |
| Picea rubens Sarg. | 1921 images |
| Picramnia pentandra Sw. | 12 images |
| Picris hieracioides L. | 4302 images |
| Pieris floribunda (Pursh) Benth. & Hook.f. | 16 images |
| Pilea fontana (Lunell) Rydb. | 1 images |
| Pilea herniarioides (Sw.) Lindl. | 1 images |
| Pilea microphylla (L.) Liebm. | 2296 images |
| Pilea pumila A.Gray | 483 images |
| Piloblephis rigida (W.Bartram ex Benth.) Raf. | 10 images |
| Pilosella aurantiaca (L.) F.W.Schultz & Sch.Bip. | 7845 images |
| Pilosella caespitosa (Dumort.) P.D.Sell & C.West | 252 images |
| Pilosella flagellaris (Willd.) Arv.-Touv. | 1 images |
| Pilosella officinarum Vaill. | 1970 images |
| Pilosella piloselloides (Vill.) Soják | 244 images |
| Pilosocereus robinii (Lem.) Byles & G.D.Rowley | 4 images |
| Pilularia americana A.Braun | 1 images |
| Pimenta dioica (L.) Merr. | 187 images |
| Pimpinella saxifraga L. | 1788 images |
| Pinellia ternata (Thunb.) Makino | 7 images |
| Pinguicula caerulea Walter | 16 images |
| Pinguicula lutea Walter | 26 images |
| Pinguicula planifolia Chapm. | 25 images |
| Pinguicula primuliflora C.E.Wood & R.K.Godfrey | 3 images |
| Pinguicula pumila Michx. | 13 images |
| Pinus clausa (Chapm. ex Engelm.) Vasey ex Sarg. | 6 images |
| Pinus echinata Mill. | 133 images |
| Pinus elliottii Engelm. | 123 images |
| Pinus glabra Walter | 23 images |
| Pinus nigra J.F.Arnold | 1902 images |
| Pinus palustris Mill. | 143 images |
| Pinus pungens Lamb. | 43 images |
| Pinus resinosa Aiton | 1371 images |
| Pinus rigida Mill. | 401 images |
| Pinus serotina Michx. | 10 images |
| Pinus strobus L. | 4176 images |
| Pinus sylvestris L. | 10257 images |
| Pinus taeda L. | 367 images |
| Pinus thunbergii Parl. | 185 images |
| Pinus virginiana Mill. | 110 images |
| Piper aduncum L. | 297 images |
| Piper auritum Kunth | 360 images |
| Piriqueta cistoides (L.) Griseb. | 27 images |
| Piscidia piscipula (L.) Sarg. | 18 images |
| Pisonia aculeata L. | 95 images |
| Pistacia chinensis Bunge | 240 images |
| Pistia stratiotes L. | 954 images |
| Pithecellobium dulce (Roxb.) Benth. | 600 images |
| Pithecellobium unguis-cati (L.) Benth. | 241 images |
| Pittosporum pentandrum (Blanco) Merr. | 13 images |
| Pittosporum tobira (Thunb.) W.T.Aiton | 14595 images |
| Pityopsis graminifolia (Michx.) Nutt. | 52 images |
| Pityrogramma calomelanos (L.) Link | 144 images |
| Pityrogramma trifoliata (L.) R.M.Tryon | 12 images |
| Plagiobothrys figuratus (Piper) I.M.Johnst. | 1 images |
| Plantago aristata Michx. | 25 images |
| Plantago cordata Lam. | 13 images |
| Plantago coronopus L. | 2523 images |
| Plantago heterophylla Nutt. | 1 images |
| Plantago indica L. | 234 images |
| Plantago lanceolata L. | 13680 images |
| Plantago major L. | 9995 images |
| Plantago maritima L. | 795 images |
| Plantago patagonica Jacq. | 48 images |
| Plantago pusilla Nutt. | 10 images |
| Plantago rhodosperma Decne. | 34 images |
| Plantago rugelii Decne. | 187 images |
| Plantago virginica L. | 179 images |
| Plantago wrightiana Decne. | 6 images |
| Platanthera blephariglottis (Willd.) Lindl. | 36 images |
| Platanthera chapmanii (Small) Luer | 3 images |
| Platanthera ciliaris (L.) Lindl. | 79 images |
| Platanthera clavellata (Michx.) Luer | 43 images |
| Platanthera cristata (Michx.) Lindl. | 5 images |
| Platanthera flava (L.) Lindl. | 17 images |
| Platanthera grandiflora (Bigelow) Lindl. | 11 images |
| Platanthera integrilabia (Correll) Luer | 2 images |
| Platanthera lacera (Michx.) G.Don | 39 images |
| Platanthera leucophaea (Nutt.) Lindl. | 11 images |
| Platanthera nivea (Nutt.) Luer | 6 images |
| Platanthera orbiculata (Pursh) Lindl. | 44 images |
| Platanthera peramoena A.Gray | 10 images |
| Platanthera psycodes (L.) Lindl. | 84 images |
| Platanus occidentalis L. | 7960 images |
| Platycladus orientalis (L.) Franco | 4779 images |
| Plectocephalus americanus (Nutt.) D.Don | 4 images |
| Pleioblastus argenteostriatus (Regel) Nakai | 15 images |
| Pleioblastus simonii (Carrière) Nakai | 3 images |
| Pleioblastus variegatus (J.Dix) Makino | 109 images |
| Pleopeltis astrolepis (Liebm.) E.Fourn. | 3 images |
| Pleopeltis marginata A.R.Sm. & Tejero | 4 images |
| Pluchea baccharis (Mill.) Pruski | 4 images |
| Pluchea camphorata (L.) DC. | 49 images |
| Pluchea carolinensis (Jacq.) G.Don | 101 images |
| Pluchea foetida (L.) DC. | 15 images |
| Pluchea odorata (L.) Cass. | 262 images |
| Pluchea sagittalis (Lam.) Cabrera | 32 images |
| Plumbago auriculata Lam. | 10630 images |
| Plumbago zeylanica L. | 346 images |
| Plumeria obtusa L. | 1140 images |
| Poa angustifolia L. | 3 images |
| Poa annua L. | 2968 images |
| Poa arachnifera Torr. | 20 images |
| Poa autumnalis Muhl. ex Elliott | 2 images |
| Poa bulbosa L. | 1165 images |
| Poa compressa L. | 110 images |
| Poa cuspidata Nutt. | 3 images |
| Poa infirma Kunth | 51 images |
| Poa nemoralis L. | 390 images |
| Poa palustris L. | 125 images |
| Poa pratensis L. | 2820 images |
| Poa trivialis L. | 1768 images |
| Podocarpus macrophyllus (Thunb.) Sweet | 950 images |
| Podophyllum cymosum (Michx.) Christenh. & Byng | 46 images |
| Podophyllum peltatum L. | 1917 images |
| Podostemum ceratophyllum Michx. | 3 images |
| Pogonia ophioglossoides (L.) Ker Gawl. | 106 images |
| Polemonium reptans L. | 424 images |
| Polemonium vanbruntiae Britton | 1 images |
| Polycarpaea corymbosa (L.) Lam. | 6 images |
| Polycarpon tetraphyllum (L.) L. | 1185 images |
| Polygala cruciata L. | 9 images |
| Polygala curtissii A.Gray | 41 images |
| Polygala cymosa Walter | 2 images |
| Polygala lutea L. | 95 images |
| Polygala mariana Mill. | 3 images |
| Polygala paniculata L. | 165 images |
| Polygala polygama Walter | 27 images |
| Polygala rugelii Shuttlew. ex A.Gray | 13 images |
| Polygala sanguinea L. | 60 images |
| Polygala senega L. | 27 images |
| Polygala setacea Michx. | 1 images |
| Polygala verticillata L. | 5 images |
| Polygaloides paucifolia (Willd.) J.R.Abbott | 173 images |
| Polygonatum biflorum (Walter) Elliott | 690 images |
| Polygonatum pubescens (Willd.) Pursh | 158 images |
| Polygonum arenastrum Boreau | 170 images |
| Polygonum aviculare L. | 5016 images |
| Polygonum cilinode Michx. | 3 images |
| Polygonum dentoceras T.M.Schust. & Reveal | 1 images |
| Polygonum douglasii Greene | 5 images |
| Polygonum glaucum Nutt. | 19 images |
| Polygonum tenerum Spreng. | 27 images |
| Polygonum tenue Michx. | 3 images |
| Polymnia canadensis L. | 134 images |
| Polypodium virginianum L. | 280 images |
| Polypogon maritimus Willd. | 35 images |
| Polypogon monspeliensis (L.) Desf. | 800 images |
| Polypogon viridis (Gouan) Breistr. | 201 images |
| Polypremum procumbens L. | 82 images |
| Polystachya concreta (Jacq.) Garay & H.R.Sweet | 105 images |
| Polystichum acrostichoides (Michx.) Schott | 601 images |
| Polystichum luctuosum (Kunze) T.Moore | 27 images |
| Polystichum polyblepharon (Roem. ex Kunze) C.Presl | 21 images |
| Polytaenia nuttallii DC. | 16 images |
| Pombalia parviflora (L.f.) Paula-Souza | 2 images |
| Pontederia azurea Sw. | 25 images |
| Pontederia cordata L. | 1464 images |
| Pontederia crassipes Mart. | 1615 images |
| Pontederia paniculata Spreng. | 7 images |
| Ponthieva racemosa (Walter) C.Mohr | 13 images |
| Populus × canescens (Aiton) Sm. | 1623 images |
| Populus × tomentosa Carrière | 24 images |
| Populus alba L. | 11752 images |
| Populus balsamifera L. | 1543 images |
| Populus deltoides W.Bartram ex Marshall | 543 images |
| Populus grandidentata Michx. | 297 images |
| Populus heterophylla L. | 24 images |
| Populus nigra L. | 13837 images |
| Populus tremuloides Michx. | 1345 images |
| Poranopsis paniculata (Roxb.) Roberty | 14 images |
| Portulaca amilis Speg. | 9 images |
| Portulaca grandiflora Hook. | 7748 images |
| Portulaca oleracea L. | 12311 images |
| Portulaca pilosa L. | 688 images |
| Portulaca rubricaulis Kunth | 16 images |
| Portulaca umbraticola Kunth | 1483 images |
| Potamogeton × nitens Weber | 2 images |
| Potamogeton amplifolius Tuck. | 7 images |
| Potamogeton berchtoldii Fieber | 24 images |
| Potamogeton crispus L. | 157 images |
| Potamogeton diversifolius Raf. | 1 images |
| Potamogeton epihydrus Raf. | 4 images |
| Potamogeton foliosus Raf. | 5 images |
| Potamogeton gramineus L. | 39 images |
| Potamogeton nodosus Poir. | 307 images |
| Potamogeton perfoliatus L. | 149 images |
| Potamogeton pusillus L. | 42 images |
| Potentilla argentea L. | 2447 images |
| Potentilla canadensis L. | 93 images |
| Potentilla inclinata Vill. | 46 images |
| Potentilla indica (Andrews) Th.Wolf | 5165 images |
| Potentilla intermedia L. | 100 images |
| Potentilla norvegica L. | 673 images |
| Potentilla recta L. | 3215 images |
| Potentilla reptans L. | 10233 images |
| Potentilla simplex Michx. | 452 images |
| Potentilla supina L. | 185 images |
| Pourthiaea villosa (Thunb.) Decne. | 78 images |
| Pouteria campechiana (Kunth) Baehni | 197 images |
| Pouzolzia zeylanica (L.) Benn. | 6 images |
| Premna odorata Blanco | 4 images |
| Primula meadia (L.) A.R.Mast & Reveal | 258 images |
| Priva lappulacea (L.) Pers. | 319 images |
| Proboscidea louisianica (Mill.) Thell. | 217 images |
| Prosartes lanuginosa (Michx.) D.Don | 20 images |
| Prosartes maculata (Buckley) A.Gray | 12 images |
| Proserpinaca palustris L. | 4 images |
| Proserpinaca pectinata Lam. | 2 images |
| Prosopis glandulosa Torr. | 456 images |
| Prosthechea boothiana (Lindl.) W.E.Higgins | 5 images |
| Prosthechea cochleata (L.) W.E.Higgins | 164 images |
| Prosthechea pygmaea (Hook.) W.E.Higgins | 15 images |
| Prunella laciniata (L.) L. | 1579 images |
| Prunella vulgaris L. | 18726 images |
| Prunus × subhirtella Miq. | 2145 images |
| Prunus × yedoensis Matsum. | 1019 images |
| Prunus americana Marshall | 61 images |
| Prunus angustifolia Marshall | 3 images |
| Prunus armeniaca L. | 5593 images |
| Prunus avium (L.) L. | 20034 images |
| Prunus campanulata Maxim. | 142 images |
| Prunus caroliniana (Mill.) Aiton | 131 images |
| Prunus cerasifera Ehrh. | 21776 images |
| Prunus cerasus L. | 10260 images |
| Prunus domestica L. | 16940 images |
| Prunus glandulosa Thunb. | 292 images |
| Prunus mahaleb L. | 6669 images |
| Prunus maritima Marshall | 32 images |
| Prunus mexicana S.Watson | 9 images |
| Prunus myrtifolia (L.) Urb. | 17 images |
| Prunus nigra Aiton | 4 images |
| Prunus padus L. | 13667 images |
| Prunus pensylvanica L.f. | 398 images |
| Prunus persica (L.) Batsch | 10206 images |
| Prunus pumila L. | 22 images |
| Prunus rivularis Scheele | 25 images |
| Prunus serotina Ehrh. | 8248 images |
| Prunus speciosa (Koidz.) Nakai | 4 images |
| Prunus susquehanae Willd. | 6 images |
| Prunus tomentosa Thunb. | 361 images |
| Prunus umbellata Elliott | 42 images |
| Prunus virginiana L. | 2707 images |
| Psammophiliella muralis (L.) Ikonn. | 539 images |
| Pseudelephantopus spicatus (Juss. ex Aubl.) C.F.Baker | 72 images |
| Pseuderanthemum variabile (R.Br.) Radlk. | 112 images |
| Pseudognaphalium luteoalbum (L.) Hilliard & B.L.Burtt | 1208 images |
| Pseudognaphalium obtusifolium (L.) Hilliard & B.L.Burtt | 68 images |
| Pseudognaphalium stramineum (Kunth) Anderb. | 101 images |
| Pseudogynoxys chenopodioides (Kunth) Cabrera | 208 images |
| Pseudophoenix sargentii H.Wendl. ex Sarg. | 58 images |
| Pseudosasa japonica (Siebold & Zucc. ex Steud.) Makino ex Nakai | 88 images |
| Psidium cattleyanum Sabine | 1629 images |
| Psidium guajava L. | 3482 images |
| Psilotum nudum (L.) P.Beauv. | 178 images |
| Psophocarpus tetragonolobus (L.) DC. | 85 images |
| Psychotria nervosa Sw. | 211 images |
| Ptelea trifoliata L. | 427 images |
| Pteridium caudatum (L.) Maxon | 51 images |
| Pteris cretica L. | 884 images |
| Pteris grandifolia L. | 8 images |
| Pteris longifolia L. | 26 images |
| Pteris multifida Poir. | 13 images |
| Pteris parkeri J.J.Parker | 2 images |
| Pteris plumieri Link | 1 images |
| Pteris tripartita Sw. | 49 images |
| Pteris vittata L. | 504 images |
| Pterocaulon pycnostachyum Elliott | 29 images |
| Pterocaulon virgatum (L.) DC. | 8 images |
| Pterygota alata (Roxb.) R.Br. | 31 images |
| Ptilimnium nuttallii (DC.) Britton | 3 images |
| Ptychosperma elegans (R.Br.) Blume | 21 images |
| Puccinellia distans (Jacq.) Parl. | 92 images |
| Puccinellia fasciculata (Torr.) E.P.Bicknell | 9 images |
| Puccinellia maritima (Huds.) Parl. | 57 images |
| Pueraria montana (Lour.) Merr. | 374 images |
| Pulicaria dysenterica (L.) Bernh. | 4792 images |
| Punica granatum L. | 13435 images |
| Pycnanthemum albescens Torr. & A.Gray | 2 images |
| Pycnanthemum curvipes (Greene) E.Grant & Epling | 1 images |
| Pycnanthemum flexuosum (Walter) Britton, Sterns & Poggenb. | 1 images |
| Pycnanthemum incanum (L.) Michx. | 110 images |
| Pycnanthemum muticum (Michx.) Pers. | 122 images |
| Pycnanthemum pycnanthemoides (Leavenw.) Fernald | 4 images |
| Pycnanthemum tenuifolium Schrad. | 244 images |
| Pycnanthemum verticillatum (Michx.) Pers. | 73 images |
| Pycnanthemum virginianum (L.) T.Durand & B.D.Jacks. ex B.L.Rob. & Fernald | 17 images |
| Pyracantha coccinea M.Roem. | 15393 images |
| Pyracantha crenulata (D.Don) M.Roem. | 1370 images |
| Pyracantha koidzumii (Hayata) Rehder | 683 images |
| Pyrola americana G.Don | 22 images |
| Pyrola chlorantha Sw. | 309 images |
| Pyrola elliptica Nutt. | 141 images |
| Pyrrhopappus carolinianus (Walter) DC. | 254 images |
| Pyrus calleryana Decne. | 4510 images |
| Pyrus communis L. | 10344 images |
| Pyrus nivalis Jacq. | 38 images |
| Pyrus pyrifolia (Burm.f.) Nakai | 452 images |
| Pyxidanthera barbulata Michx. | 5 images |
| Quercus × heterophylla F.Michx. | 6 images |
| Quercus × leana Nutt. | 6 images |
| Quercus × ludoviciana Sarg. | 1 images |
| Quercus × schochiana Dieck | 1 images |
| Quercus acerifolia (E.J.Palmer) Stoynoff & W.J.Hess ex R.J.Jensen | 3 images |
| Quercus acutissima Carruth. | 260 images |
| Quercus alba L. | 699 images |
| Quercus arkansana Sarg. | 15 images |
| Quercus austrina Small | 10 images |
| Quercus bicolor Willd. | 602 images |
| Quercus boyntonii Beadle | 2 images |
| Quercus coccinea Münchh. | 158 images |
| Quercus falcata Michx. | 65 images |
| Quercus geminata Small | 21 images |
| Quercus ilicifolia Wangenh. | 40 images |
| Quercus imbricaria Michx. | 222 images |
| Quercus laevis Walter | 7 images |
| Quercus laurifolia Michx. | 57 images |
| Quercus lyrata Walter | 9 images |
| Quercus macrocarpa Michx. | 1266 images |
| Quercus marilandica (L.) Münchh. | 72 images |
| Quercus michauxii Nutt. | 154 images |
| Quercus montana Willd. | 8 images |
| Quercus muehlenbergii Engelm. | 53 images |
| Quercus myrtifolia Willd. | 2 images |
| Quercus nigra L. | 932 images |
| Quercus oglethorpensis W.H.Duncan | 4 images |
| Quercus palustris Münchh. | 3756 images |
| Quercus phellos L. | 752 images |
| Quercus pumila Walter | 1 images |
| Quercus robur L. | 16921 images |
| Quercus rubra L. | 11291 images |
| Quercus shumardii Buckley | 63 images |
| Quercus similis Ashe | 1 images |
| Quercus sinuata Walter | 6 images |
| Quercus stellata Wangenh. | 118 images |
| Quercus texana Buckley | 37 images |
| Quercus velutina Lam. | 1114 images |
| Quercus virginiana Mill. | 465 images |
| Rabelera holostea (L.) M.T.Sharples & E.A.Tripp | 11046 images |
| Randia aculeata L. | 62 images |
| Ranunculus abortivus L. | 488 images |
| Ranunculus acris L. | 11750 images |
| Ranunculus ambigens S.Watson | 5 images |
| Ranunculus arvensis L. | 453 images |
| Ranunculus bulbosus L. | 5027 images |
| Ranunculus fascicularis Muhl. ex Bigelow | 66 images |
| Ranunculus ficaria L. | 30643 images |
| Ranunculus flabellaris Raf. | 11 images |
| Ranunculus harveyi (A.Gray) Britton | 8 images |
| Ranunculus hederaceus L. | 163 images |
| Ranunculus hispidus Michx. | 207 images |
| Ranunculus laxicaulis (Torr. & A.Gray) Darby | 1 images |
| Ranunculus micranthus Nutt. | 14 images |
| Ranunculus minimus (L.) E.H.L.Krause | 168 images |
| Ranunculus muricatus L. | 1071 images |
| Ranunculus parviflorus Loefl. | 6 images |
| Ranunculus pensylvanicus L.f. | 2 images |
| Ranunculus pusillus Poir. | 5 images |
| Ranunculus recurvatus Poir. | 214 images |
| Ranunculus repens L. | 15057 images |
| Ranunculus sardous Crantz | 869 images |
| Ranunculus sceleratus L. | 1410 images |
| Ranunculus trichophyllus Chaix | 480 images |
| Ranunculus trilobus Desf. | 67 images |
| Raphanus raphanistrum L. | 13487 images |
| Rapistrum rugosum (L.) All. | 2999 images |
| Ratibida columnifera (Nutt.) Wooton & Standl. | 421 images |
| Ratibida pinnata (Vent.) Barnhart | 319 images |
| Reseda alba L. | 1977 images |
| Reseda lutea L. | 5920 images |
| Reseda luteola L. | 2992 images |
| Reseda odorata L. | 74 images |
| Reynosia septentrionalis Urb. | 2 images |
| Reynoutria × bohemica Chrtek & Chrtková | 101 images |
| Reynoutria japonica Houtt. | 10639 images |
| Reynoutria sachalinensis (F.Schmidt) Nakai | 2303 images |
| Rhabdadenia biflora (Jacq.) Müll.Arg. | 13 images |
| Rhamnus cathartica L. | 5219 images |
| Rhamnus davurica Pall. | 1 images |
| Rhamphospermum arvense (L.) Andrz. ex Besser | 10199 images |
| Rhamphospermum nigrum (L.) Al-Shehbaz | 707 images |
| Rhaphiolepis bibas (Lour.) Galasso & Banfi | 11504 images |
| Rhapidophyllum hystrix (Fraser ex Thouin) H.Wendl. & Drude | 55 images |
| Rheum rhabarbarum L. | 588 images |
| Rhexia alifanus Walter | 14 images |
| Rhexia cubensis Griseb. | 4 images |
| Rhexia mariana L. | 196 images |
| Rhexia virginica L. | 114 images |
| Rhipsalis baccifera (J.S.Muell.) Stearn | 1945 images |
| Rhipsalis cereuscula Haw. | 545 images |
| Rhizophora mangle L. | 510 images |
| Rhodiola rosea L. | 758 images |
| Rhododendron alabamense Rehder | 614 images |
| Rhododendron arborescens (Pursh) Torr. | 89 images |
| Rhododendron atlanticum (Ashe) Rehder | 29 images |
| Rhododendron austrinum (Small) Rehder | 15 images |
| Rhododendron calendulaceum (Michx.) Torr. | 3045 images |
| Rhododendron canescens (Michx.) Sweet | 186 images |
| Rhododendron catawbiense Michx. | 2107 images |
| Rhododendron eastmanii Kron & Creel | 3 images |
| Rhododendron maximum L. | 6355 images |
| Rhododendron minus Michx. | 43 images |
| Rhododendron periclymenoides (Michx.) Shinners | 255 images |
| Rhododendron pilosum (Michx. ex Lam.) Craven | 2 images |
| Rhododendron prunifolium (Small) Millais | 12 images |
| Rhododendron roseum (Loisel.) Rehder | 339 images |
| Rhododendron vaseyi A.Gray | 122 images |
| Rhododendron viscosum (L.) Torr. | 134 images |
| Rhodomyrtus tomentosa (Aiton) Hassk. | 73 images |
| Rhodotypos scandens (Thunb.) Makino | 815 images |
| Rhus aromatica Aiton | 632 images |
| Rhus copallinum L. | 889 images |
| Rhus glabra L. | 1732 images |
| Rhus trilobata Nutt. | 14 images |
| Rhus typhina L. | 10194 images |
| Rhynchosia minima (L.) DC. | 292 images |
| Rhynchosia reniformis DC. | 1 images |
| Rhynchosia reticulata (Sw.) DC. | 10 images |
| Rhynchospora alba (L.) Vahl | 181 images |
| Rhynchospora capitellata (Michx.) Vahl | 3 images |
| Rhynchospora colorata (L.) H.Pfeiff. | 136 images |
| Rhynchospora contracta (Nees) J.Raynal | 4 images |
| Rhynchospora fascicularis (Michx.) Vahl | 8 images |
| Rhynchospora fusca (L.) W.T.Aiton | 57 images |
| Rhynchospora glomerata (L.) Vahl | 1 images |
| Rhynchospora latifolia (Baldwin ex Elliott) W.W.Thomas | 10 images |
| Rhynchospora perplexa Britton | 1 images |
| Ribes americanum Mill. | 105 images |
| Ribes aureum Pursh | 1675 images |
| Ribes cynosbati L. | 254 images |
| Ribes glandulosum Weber | 16 images |
| Ribes hirtellum Michx. | 5 images |
| Ribes lacustre (Pers.) Poir. | 84 images |
| Ribes missouriense Nutt. | 67 images |
| Ribes nigrum L. | 2842 images |
| Ribes rubrum L. | 5481 images |
| Ribes triste Pall. | 11 images |
| Ribes uva-crispa L. | 3186 images |
| Richardia brasiliensis Gomes | 213 images |
| Richardia grandiflora (Cham. & Schltdl.) Steud. | 5 images |
| Richardia scabra L. | 563 images |
| Ricinus communis L. | 10935 images |
| Ripariosida hermaphrodita (L.) Weakley & D.B.Poind. | 55 images |
| Rivina humilis L. | 1031 images |
| Robinia × ambigua Poir. | 5 images |
| Robinia × margaretiae Ashe | 2 images |
| Robinia hispida L. | 1377 images |
| Robinia pseudoacacia L. | 21828 images |
| Robinia viscosa Michx. ex Vent. | 1502 images |
| Roemeria argemone (L.) C.Morales, R.Mend. & Romero García | 1366 images |
| Roemeria sicula (Guss.) ined. | 930 images |
| Rorippa aquatica (Eaton) E.J.Palmer & Steyerm. | 1 images |
| Rorippa austriaca (Crantz) Besser | 157 images |
| Rorippa curvipes Greene | 10 images |
| Rorippa dubia (Pers.) H.Hara | 8 images |
| Rorippa indica (L.) Hiern | 1 images |
| Rorippa palustris (L.) Besser | 969 images |
| Rorippa sylvestris (L.) Besser | 2135 images |
| Rosa arkansana Porter | 92 images |
| Rosa bracteata J.C.Wendl. | 27 images |
| Rosa canina L. | 21293 images |
| Rosa carolina L. | 29 images |
| Rosa chinensis Jacq. | 25945 images |
| Rosa gallica L. | 10544 images |
| Rosa glauca Pourr. | 855 images |
| Rosa laevigata Michx. | 57 images |
| Rosa lucieae Franch. & Rochebr. ex Crép. | 2407 images |
| Rosa micrantha Borrer ex Sm. | 778 images |
| Rosa multiflora Thunb. | 5083 images |
| Rosa palustris Marshall | 48 images |
| Rosa pendulina L. | 7339 images |
| Rosa rubiginosa L. | 3837 images |
| Rosa rugosa Thunb. | 9148 images |
| Rosa setigera Michx. | 270 images |
| Rosa spinosissima L. | 4190 images |
| Rosa tomentosa Sm. | 227 images |
| Rosa virginiana Mill. | 144 images |
| Rostraria cristata (L.) Tzvelev | 598 images |
| Rotala ramosior (L.) Koehne | 9 images |
| Rotala rotundifolia (Buch.-Ham. ex Roxb.) Koehne | 11 images |
| Rotanthella floridana (S.Watson ex A.Gray) Morin | 4 images |
| Rottboellia campestris Nutt. | 1 images |
| Rottboellia cochinchinensis (Lour.) Clayton | 24 images |
| Roystonea regia (Kunth) O.F.Cook | 678 images |
| Rubus allegheniensis Porter | 65 images |
| Rubus argutus Link | 1965 images |
| Rubus armeniacus Focke | 1051 images |
| Rubus caesius L. | 6698 images |
| Rubus canadensis L. | 187 images |
| Rubus cuneifolius Pursh | 1 images |
| Rubus flagellaris Willd. | 36 images |
| Rubus hispidus L. | 92 images |
| Rubus idaeus L. | 7142 images |
| Rubus illecebrosus Focke | 56 images |
| Rubus nemoralis P.J.Müll. | 997 images |
| Rubus niveus Thunb. | 235 images |
| Rubus occidentalis L. | 2976 images |
| Rubus odoratus L. | 1448 images |
| Rubus parvifolius L. | 10 images |
| Rubus pensilvanicus Poir. | 42 images |
| Rubus phoenicolasius Maxim. | 1754 images |
| Rubus setosus Bigelow | 4 images |
| Rubus trivialis Michx. | 62 images |
| Rudbeckia amplexicaulis Vahl | 13 images |
| Rudbeckia fulgida Aiton | 6923 images |
| Rudbeckia grandiflora (Sweet) C.C.Gmel. ex DC. | 3 images |
| Rudbeckia hirta L. | 4642 images |
| Rudbeckia laciniata L. | 2405 images |
| Rudbeckia maxima Nutt. | 81 images |
| Rudbeckia missouriensis Engelm. ex C.L.Boynton & Beadle | 3 images |
| Rudbeckia nitida Nutt. | 159 images |
| Rudbeckia subtomentosa Pursh | 108 images |
| Rudbeckia triloba L. | 1060 images |
| Ruellia blechum L. | 182 images |
| Ruellia caroliniensis (J.F.Gmel.) Steud. | 7 images |
| Ruellia ciliatiflora Hook. | 236 images |
| Ruellia humilis Nutt. | 512 images |
| Ruellia pedunculata Torr. ex A.Gray | 29 images |
| Ruellia purshiana Fernald | 2 images |
| Ruellia simplex C.Wright | 3991 images |
| Ruellia strepens L. | 118 images |
| Rumex × acutus L. | 1492 images |
| Rumex acetosella L. | 5110 images |
| Rumex altissimus Alph.Wood | 12 images |
| Rumex bucephalophorus L. | 690 images |
| Rumex conglomeratus Murray | 2411 images |
| Rumex crispus L. | 9787 images |
| Rumex obtusifolius L. | 12720 images |
| Rumex patientia L. | 2933 images |
| Rumex pulcher L. | 2120 images |
| Rumex sanguineus L. | 1412 images |
| Rumex spinosus L. | 382 images |
| Rumex stenophyllus Ledeb. | 1 images |
| Rumex verticillatus L. | 28 images |
| Rumohra adiantiformis (G.Forst.) Ching | 12 images |
| Ruppia maritima L. | 23 images |
| Russelia equisetiformis Schltdl. & Cham. | 2436 images |
| Ruta graveolens L. | 3214 images |
| Sabal etonia Swingle ex Nash | 4 images |
| Sabal minor (Jacq.) Pers. | 284 images |
| Sabal palmetto (Walter) Lodd. ex Schult. & Schult.f. | 368 images |
| Sabatia angularis (L.) Pursh | 160 images |
| Sabatia brevifolia Raf. | 15 images |
| Sabatia campanulata (L.) Torr. | 2 images |
| Sabatia campestris Nutt. | 133 images |
| Sabatia gentianoides Elliott | 8 images |
| Sabatia grandiflora (A.Gray) Small | 9 images |
| Sabatia stellaris Pursh | 18 images |
| Sabulina michauxii (Fenzl) Dillenb. & Kadereit | 6 images |
| Saccharum officinarum L. | 941 images |
| Saccharum spontaneum L. | 55 images |
| Sacciolepis indica (L.) Chase | 9 images |
| Sacciolepis striata (L.) Nash | 1 images |
| Sacoila lanceolata (Aubl.) Garay | 55 images |
| Sageretia minutiflora (Michx.) Trel. | 1 images |
| Sagina apetala Ard. | 204 images |
| Sagina procumbens L. | 937 images |
| Sagittaria graminea Michx. | 69 images |
| Sagittaria guayanensis Kunth | 41 images |
| Sagittaria isoetiformis J.G.Sm. | 2 images |
| Sagittaria lancifolia L. | 85 images |
| Sagittaria latifolia Willd. | 699 images |
| Sagittaria montevidensis Cham. & Schltdl. | 156 images |
| Sagittaria rigida Pursh | 8 images |
| Sagittaria subulata (L.) Buchenau | 9 images |
| Salicornia bigelovii Torr. | 24 images |
| Salicornia virginica L. | 10 images |
| Salix × fragilis L. | 113 images |
| Salix alba L. | 9966 images |
| Salix amygdaloides Andersson | 24 images |
| Salix atrocinerea Brot. | 3617 images |
| Salix babylonica L. | 6142 images |
| Salix bebbiana Sarg. | 28 images |
| Salix caprea L. | 12190 images |
| Salix caroliniana Michx. | 33 images |
| Salix cinerea L. | 5645 images |
| Salix discolor Muhl. | 456 images |
| Salix eleagnos Scop. | 2732 images |
| Salix eriocephala Michx. | 71 images |
| Salix exigua Nutt. | 231 images |
| Salix humilis Marshall | 14 images |
| Salix interior Rowlee | 5 images |
| Salix lasiandra Benth. | 3 images |
| Salix lucida Muhl. | 63 images |
| Salix nigra Marshall | 113 images |
| Salix pentandra L. | 1051 images |
| Salix purpurea L. | 3089 images |
| Salix sericea Marshall | 11 images |
| Salix triandra L. | 1840 images |
| Salpichroa origanifolia (Lam.) Baill. | 1026 images |
| Salsola kali L. | 424 images |
| Salsola tragus L. | 50 images |
| Salvia × sylvestris L. | 1239 images |
| Salvia azurea Michx. ex Vahl | 80 images |
| Salvia coccinea Buc'hoz ex Etl. | 789 images |
| Salvia farinacea Benth. | 4865 images |
| Salvia hispanica L. | 701 images |
| Salvia lyrata L. | 787 images |
| Salvia misella Kunth | 9 images |
| Salvia occidentalis Sw. | 33 images |
| Salvia officinalis L. | 11187 images |
| Salvia pratensis L. | 15517 images |
| Salvia reflexa Hornem. | 29 images |
| Salvia sclarea L. | 3637 images |
| Salvia serotina L. | 3 images |
| Salvia splendens Sellow ex Nees | 1564 images |
| Salvia urticifolia L. | 5 images |
| Salvia verbenaca L. | 5918 images |
| Salvia verticillata L. | 1727 images |
| Salvinia minima Baker | 56 images |
| Salvinia molesta D.Mitch. | 28 images |
| Sambucus canadensis L. | 4180 images |
| Sambucus nigra L. | 27882 images |
| Sambucus racemosa L. | 8477 images |
| Samolus ebracteatus Kunth | 13 images |
| Samolus parviflorus Raf. | 2 images |
| Sanguinaria canadensis L. | 1613 images |
| Sanguisorba canadensis L. | 151 images |
| Sanguisorba minor Scop. | 8531 images |
| Sanicula canadensis L. | 437 images |
| Sanicula marilandica L. | 22 images |
| Sanicula trifoliata E.P.Bicknell | 1 images |
| Santalum album L. | 118 images |
| Santolina chamaecyparissus L. | 6341 images |
| Sanvitalia procumbens Lam. | 1438 images |
| Sapindus mukorossi Gaertn. | 24 images |
| Sapindus saponaria L. | 478 images |
| Saponaria officinalis L. | 15383 images |
| Sarracenia × catesbaei Elliott | 1 images |
| Sarracenia × farnhamii Rob. | 1 images |
| Sarracenia × moorei T.Moore & Mast. | 4 images |
| Sarracenia alata (Alph.Wood) Alph.Wood | 7 images |
| Sarracenia flava L. | 453 images |
| Sarracenia leucophylla Raf. | 403 images |
| Sarracenia minor Walter | 49 images |
| Sarracenia oreophila (Kearney) Wherry | 2 images |
| Sarracenia psittacina Michx. | 103 images |
| Sarracenia purpurea L. | 1216 images |
| Sarracenia rosea Naczi, F.W.Case & R.B.Case | 4 images |
| Sarracenia rubra Walter | 73 images |
| Sassafras albidum (Nutt.) Nees | 1413 images |
| Saururus cernuus L. | 343 images |
| Saxifraga tridactylites L. | 1388 images |
| Scaevola plumieri (L.) Vahl | 254 images |
| Scaevola taccada (Gaertn.) Roxb. | 1015 images |
| Scandix pecten-veneris L. | 2709 images |
| Schenkia spicata (L.) G.Mans. | 4 images |
| Schinus molle L. | 6144 images |
| Schinus terebinthifolia Raddi | 2338 images |
| Schizachyrium scoparium (Michx.) Nash | 50 images |
| Schkuhria pinnata (Lam.) Kuntze ex Thell. | 53 images |
| Schoenocaulon dubium (Michx.) Small | 2 images |
| Schoenolirion croceum (Michx.) Alph.Wood | 5 images |
| Schoenoplectiella hallii (A.Gray) Lye | 1 images |
| Schoenoplectiella mucronata (L.) J.Jung & H.K.Choi | 36 images |
| Schoenoplectiella purshiana (Fernald) Lye | 3 images |
| Schoenoplectus californicus (C.A.Mey.) Soják | 32 images |
| Schoenoplectus pungens (Vahl) Palla | 60 images |
| Schoenoplectus tabernaemontani (C.C.Gmel.) Palla | 82 images |
| Schoenus nigricans L. | 382 images |
| Schoepfia schreberi J.F.Gmel. | 34 images |
| Scilla hyacinthoides L. | 183 images |
| Scilla siberica Andrews | 2357 images |
| Scirpoides holoschoenus (L.) Soják | 1295 images |
| Scirpus atrovirens Willd. | 177 images |
| Scirpus cyperinus (L.) Kunth | 110 images |
| Scirpus expansus Fernald | 3 images |
| Scirpus hattorianus Makino | 4 images |
| Scirpus microcarpus J.Presl & C.Presl | 4 images |
| Scirpus pendulus Muhl. | 30 images |
| Scirpus polyphyllus Vahl | 4 images |
| Scleranthus annuus L. | 279 images |
| Scleria gaertneri Raddi | 63 images |
| Scleria lithosperma (L.) Sw. | 6 images |
| Sclerochloa dura (L.) P.Beauv. | 57 images |
| Scolymus hispanicus L. | 3481 images |
| Scolymus maculatus L. | 237 images |
| Scoparia dulcis L. | 279 images |
| Scorzoneroides autumnalis (L.) Moench | 2029 images |
| Scrophularia lanceolata Pursh | 13 images |
| Scrophularia marilandica L. | 50 images |
| Scutellaria alabamensis Alexander | 25 images |
| Scutellaria drummondii Benth. | 49 images |
| Scutellaria galericulata L. | 1214 images |
| Scutellaria havanensis Jacq. | 2 images |
| Scutellaria incana Biehler | 87 images |
| Scutellaria integrifolia L. | 81 images |
| Scutellaria lateriflora L. | 82 images |
| Scutellaria minor Huds. | 125 images |
| Scutellaria nervosa Pursh | 1 images |
| Scutellaria ovata Hill | 76 images |
| Scutellaria parvula Michx. | 30 images |
| Scutellaria racemosa Pers. | 52 images |
| Scutellaria saxatilis Riddell | 1 images |
| Scutellaria serrata Andrews | 22 images |
| Secale cereale L. | 3343 images |
| Sedum acre L. | 7026 images |
| Sedum diffusum S.Watson | 17 images |
| Sedum glaucophyllum R.T.Clausen | 51 images |
| Sedum lineare Thunb. | 519 images |
| Sedum mexicanum Britton | 695 images |
| Sedum nevii A.Gray | 3 images |
| Sedum pulchellum Michx. | 49 images |
| Sedum sarmentosum Bunge | 730 images |
| Sedum ternatum Michx. | 336 images |
| Selaginella apoda (L.) Spring | 13 images |
| Selaginella kraussiana (Kunze) A.Braun | 198 images |
| Selaginella plana (Desv.) Hieron. | 4 images |
| Selaginella uncinata (Desv.) Spring | 1 images |
| Selaginella willdenowii (Desv.) Baker | 1 images |
| Selenia aurea Nutt. | 1 images |
| Selenicereus grandiflorus (L.) Britton & Rose | 250 images |
| Selenicereus pteranthus (Link ex A.Dietr.) Britton & Rose | 9 images |
| Selenicereus undatus (Haw.) D.R.Hunt | 2482 images |
| Sempervivum tectorum L. | 11112 images |
| Senecio sylvaticus L. | 1744 images |
| Senecio vulgaris L. | 9271 images |
| Senna alata (L.) Roxb. | 877 images |
| Senna corymbosa (Lam.) H.S.Irwin & Barneby | 710 images |
| Senna hebecarpa (Fernald) H.S.Irwin & Barneby | 9 images |
| Senna marilandica (L.) Link | 190 images |
| Senna obtusifolia (L.) H.S.Irwin & Barneby | 421 images |
| Senna occidentalis (L.) Link | 1352 images |
| Senna pendula (Humb. & Bonpl. ex Willd.) H.S.Irwin & Barneby | 274 images |
| Senna tora (L.) Roxb. | 210 images |
| Serenoa repens (W.Bartram) Small | 179 images |
| Sericocarpus asteroides (L.) Britton, Sterns & Poggenb. | 15 images |
| Sericocarpus linifolius Britton, Sterns & Poggenb. | 5 images |
| Sericocarpus tortifolius Nees | 15 images |
| Serpocaulon triseriale (Sw.) A.R.Sm. | 37 images |
| Sesamum indicum L. | 359 images |
| Sesamum trilobum (Bernh.) Byng & Christenh. | 49 images |
| Sesbania drummondii (Rydb.) Cory | 81 images |
| Sesbania grandiflora (L.) Poir. | 32 images |
| Sesbania herbacea (Mill.) McVaugh | 107 images |
| Sesbania punicea (Cav.) Benth. | 407 images |
| Sesbania vesicaria (Jacq.) Elliott | 8 images |
| Sesbania virgata (Cav.) Poir. | 7 images |
| Seseli libanotis (L.) W.D.J.Koch | 442 images |
| Sesuvium portulacastrum (L.) L. | 856 images |
| Sesuvium revolutifolium Ortega | 36 images |
| Setaria adhaerens (Forssk.) Chiov. | 12 images |
| Setaria barbata (Lam.) Kunth | 36 images |
| Setaria faberi R.A.W.Herrm. | 28 images |
| Setaria geminata (Forssk.) Veldkamp | 12 images |
| Setaria italica (L.) P.Beauv. | 1302 images |
| Setaria leucopila (Scribn. & Merr.) K.Schum. | 3 images |
| Setaria macrostachya Kunth | 5 images |
| Setaria magna Griseb. | 4 images |
| Setaria palmifolia (J.Koenig) Stapf | 113 images |
| Setaria parviflora (Poir.) Kerguélen | 155 images |
| Setaria pumila (Poir.) Roem. & Schult. | 2513 images |
| Setaria sphacelata (Schumach.) Stapf & C.E.Hubb. ex Moss | 4 images |
| Setaria verticillata (L.) P.Beauv. | 1206 images |
| Setaria viridis (L.) P.Beauv. | 149 images |
| Setaria vulpiseta (Lam.) Roem. & Schult. | 12 images |
| Seymeria cassioides (J.F.Gmel.) S.F.Blake | 4 images |
| Seymeria pectinata Pursh | 3 images |
| Sherardia arvensis L. | 3965 images |
| Shortia galacifolia Torr. & A.Gray | 6 images |
| Sibbaldia tridentata (Aiton) Paule & Soják | 28 images |
| Sicyos angulatus L. | 402 images |
| Sida acuta Burm.f. | 806 images |
| Sida ciliaris L. | 104 images |
| Sida cordifolia L. | 169 images |
| Sida glabra Mill. | 46 images |
| Sida rhombifolia L. | 777 images |
| Sida santaremensis Monteiro | 1 images |
| Sida spinosa L. | 151 images |
| Sida ulmifolia Mill. | 8 images |
| Sida urens L. | 27 images |
| Sideroxylon foetidissimum Jacq. | 32 images |
| Sideroxylon lanuginosum Michx. | 93 images |
| Sideroxylon lycioides L. | 16 images |
| Sideroxylon reclinatum Michx. | 9 images |
| Sideroxylon salicifolium (L.) Lam. | 27 images |
| Sigesbeckia orientalis L. | 183 images |
| Sigmoidotropis speciosa (Kunth) A.Delgado | 62 images |
| Silene antirrhina L. | 14 images |
| Silene caroliniana Walter | 24 images |
| Silene conica L. | 533 images |
| Silene coronaria (L.) Clairv. | 6173 images |
| Silene csereii Baumg. | 4 images |
| Silene dichotoma Ehrh. | 902 images |
| Silene dioica (L.) Clairv. | 17251 images |
| Silene flos-cuculi (L.) Greuter & Burdet | 6970 images |
| Silene gallica L. | 1704 images |
| Silene latifolia Poir. | 19222 images |
| Silene noctiflora L. | 1360 images |
| Silene ovata Pursh | 5 images |
| Silene regia Sims | 79 images |
| Silene rotundifolia Nutt. | 2 images |
| Silene stellata (L.) Coyte | 116 images |
| Silene virginica L. | 305 images |
| Silene vulgaris (Moench) Garcke | 14383 images |
| Silphium asteriscus L. | 71 images |
| Silphium integrifolium Michx. | 98 images |
| Silphium laciniatum L. | 231 images |
| Silphium mohrii Small | 30 images |
| Silphium perfoliatum L. | 1305 images |
| Silphium radula Nutt. | 33 images |
| Silphium terebinthinaceum Jacq. | 200 images |
| Silybum marianum (L.) Gaertn. | 9040 images |
| Simarouba glauca DC. | 33 images |
| Sinapis alba L. | 6142 images |
| Sisymbrium altissimum L. | 304 images |
| Sisymbrium irio L. | 2423 images |
| Sisymbrium loeselii L. | 1265 images |
| Sisymbrium officinale (L.) Scop. | 5658 images |
| Sisyrinchium albidum Raf. | 35 images |
| Sisyrinchium angustifolium Mill. | 890 images |
| Sisyrinchium langloisii Greene | 54 images |
| Sisyrinchium minus Engelm. & A.Gray | 4 images |
| Sisyrinchium mucronatum Michx. | 5 images |
| Sisyrinchium rosulatum E.P.Bicknell | 254 images |
| Sium suave Walter | 65 images |
| Smallanthus uvedalia (L.) Mack. | 61 images |
| Smilax auriculata Walter | 18 images |
| Smilax bona-nox L. | 728 images |
| Smilax ecirrhata (Engelm. ex Kunth) S.Watson | 2 images |
| Smilax glauca Walter | 58 images |
| Smilax herbacea L. | 204 images |
| Smilax lasioneura Hook. | 13 images |
| Smilax laurifolia L. | 44 images |
| Smilax pumila Walter | 20 images |
| Smilax rotundifolia L. | 814 images |
| Smilax tamnoides L. | 152 images |
| Smilax walteri Pursh | 16 images |
| Smyrnium perfoliatum L. | 1084 images |
| Solanum aculeatissimum Jacq. | 6 images |
| Solanum aethiopicum L. | 138 images |
| Solanum alatum Moench | 3 images |
| Solanum americanum Mill. | 5569 images |
| Solanum bahamense L. | 88 images |
| Solanum capsicoides All. | 82 images |
| Solanum carolinense L. | 1469 images |
| Solanum chenopodioides Lam. | 1874 images |
| Solanum citrullifolium A.Braun | 17 images |
| Solanum dimidiatum Raf. | 170 images |
| Solanum diphyllum L. | 424 images |
| Solanum donianum Walp. | 4 images |
| Solanum dulcamara L. | 13418 images |
| Solanum elaeagnifolium Cav. | 1527 images |
| Solanum erianthum D.Don | 2 images |
| Solanum glaucophyllum Desf. | 37 images |
| Solanum jamaicense Mill. | 46 images |
| Solanum lanceifolium Jacq. | 20 images |
| Solanum lycopersicum L. | 15650 images |
| Solanum mauritianum Scop. | 1597 images |
| Solanum nigrescens M.Martens & Galeotti | 21 images |
| Solanum nigrum L. | 12749 images |
| Solanum pseudocapsicum L. | 3009 images |
| Solanum rostratum Dunal | 535 images |
| Solanum sarrachoides Sendtn. | 5 images |
| Solanum seaforthianum Andrews | 309 images |
| Solanum sisymbriifolium Lam. | 971 images |
| Solanum torvum Sw. | 1098 images |
| Solanum triflorum Nutt. | 57 images |
| Solanum villosum Mill. | 1913 images |
| Solanum virginianum L. | 164 images |
| Solidago altissima L. | 455 images |
| Solidago arguta Aiton | 6 images |
| Solidago bicolor L. | 108 images |
| Solidago caesia L. | 403 images |
| Solidago canadensis L. | 13498 images |
| Solidago drummondii Torr. & A.Gray | 1 images |
| Solidago erecta Banks ex Pursh | 8 images |
| Solidago fistulosa Mill. | 9 images |
| Solidago flexicaulis L. | 340 images |
| Solidago gigantea Aiton | 5964 images |
| Solidago glomerata Michx. | 1 images |
| Solidago hispida Muhl. ex Willd. | 18 images |
| Solidago juncea Aiton | 425 images |
| Solidago latissimifolia Mill. | 2 images |
| Solidago missouriensis Nutt. | 23 images |
| Solidago nemoralis Aiton | 157 images |
| Solidago odora Aiton | 52 images |
| Solidago patula Muhl. ex Willd. | 23 images |
| Solidago petiolaris Aiton | 10 images |
| Solidago pinetorum Small | 8 images |
| Solidago ptarmicoides (Torr. & A.Gray) B.Boivin | 13 images |
| Solidago puberula Nutt. | 20 images |
| Solidago rigida L. | 145 images |
| Solidago rugosa Mill. | 983 images |
| Solidago sempervirens L. | 55 images |
| Solidago simplex Kunth | 16 images |
| Solidago speciosa Nutt. | 99 images |
| Solidago sphacelata Raf. | 2 images |
| Solidago squarrosa Nutt. | 12 images |
| Solidago stricta Aiton | 8 images |
| Solidago uliginosa Nutt. | 31 images |
| Solidago ulmifolia Muhl. ex Willd. | 63 images |
| Soliva sessilis Ruiz & Pav. | 149 images |
| Soliva stolonifera (Brot.) Loudon | 4 images |
| Sonchus arvensis L. | 4861 images |
| Sonchus asper (L.) Hill | 13063 images |
| Sonchus oleraceus L. | 13132 images |
| Sophora tomentosa L. | 218 images |
| Sorbaria sorbifolia (L.) A.Braun | 2748 images |
| Sorbus americana Marshall | 198 images |
| Sorbus aucuparia L. | 18405 images |
| Sorghastrum nutans (L.) Nash | 170 images |
| Sorghastrum secundum (Elliott) Nash | 2 images |
| Sorghum × drummondii (Nees ex Steud.) Millsp. & Chase | 3 images |
| Sorghum arundinaceum (Desv.) Stapf | 23 images |
| Sorghum bicolor (L.) Moench | 2105 images |
| Sorghum halepense (L.) Pers. | 2777 images |
| Sparganium americanum Nutt. | 14 images |
| Sparganium androcladum (Engelm.) Morong | 3 images |
| Sparganium emersum Rehmann | 186 images |
| Sparganium eurycarpum Engelm. | 46 images |
| Spathoglottis plicata Blume | 1362 images |
| Spergula arvensis L. | 1152 images |
| Spergula morisonii Boreau | 155 images |
| Spergula pentandra L. | 50 images |
| Spergularia echinosperma (Čelak.) Asch. & Graebn. | 31 images |
| Spergularia marina (L.) Besser | 589 images |
| Spergularia media (L.) C.Presl | 313 images |
| Spergularia rubra (L.) J.Presl & C.Presl | 1388 images |
| Spermacoce glabra Michx. | 31 images |
| Spermacoce latifolia Aubl. | 16 images |
| Spermacoce prostrata Aubl. | 39 images |
| Spermacoce remota Lam. | 168 images |
| Spermacoce verticillata L. | 295 images |
| Sphagneticola trilobata (L.) Pruski | 1930 images |
| Sphenoclea zeylanica Gaertn. | 21 images |
| Sphenopholis intermedia (Rydb.) Rydb. | 9 images |
| Sphenopholis obtusata (Michx.) Scribn. | 9 images |
| Spigelia anthelmia L. | 206 images |
| Spigelia marilandica (L.) L. | 159 images |
| Spinacia oleracea L. | 1544 images |
| Spiraea alba Du Roi | 1923 images |
| Spiraea cantoniensis Lour. | 1896 images |
| Spiraea corymbosa Raf. | 2 images |
| Spiraea japonica L.f. | 10954 images |
| Spiraea prunifolia Siebold & Zucc. | 251 images |
| Spiraea salicifolia L. | 447 images |
| Spiraea thunbergii Siebold ex Blume | 2049 images |
| Spiraea tomentosa L. | 733 images |
| Spiranthes brevilabris Lindl. | 1 images |
| Spiranthes cernua (L.) Rich. | 159 images |
| Spiranthes lacera (Raf.) Raf. | 63 images |
| Spiranthes longilabris Lindl. | 1 images |
| Spiranthes lucida (H.H.Eaton) Ames | 12 images |
| Spiranthes magnicamporum Sheviak | 26 images |
| Spiranthes ochroleuca (Rydb.) Rydb. | 6 images |
| Spiranthes odorata (Nutt.) Lindl. | 3 images |
| Spiranthes ovalis Lindl. | 26 images |
| Spiranthes praecox (Walter) S.Watson | 6 images |
| Spiranthes tuberosa Raf. | 3 images |
| Spiranthes vernalis Engelm. & A.Gray | 59 images |
| Spirobassia hirsuta (L.) Freitag & G.Kadereit | 15 images |
| Spirodela polyrhiza (L.) Schleid. | 181 images |
| Spirodela punctata (G.Mey.) C.H.Thomps. | 5 images |
| Spondias purpurea L. | 479 images |
| Sporobolus airoides (Torr.) Torr. | 24 images |
| Sporobolus alterniflorus (Loisel.) P.M.Peterson & Saarela | 60 images |
| Sporobolus bakeri (Merr.) P.M.Peterson & Saarela | 1 images |
| Sporobolus cryptandrus (Torr.) A.Gray | 9 images |
| Sporobolus cynosuroides (L.) P.M.Peterson & Saarela | 1 images |
| Sporobolus heterolepis (A.Gray) A.Gray | 15 images |
| Sporobolus indicus (L.) R.Br. | 395 images |
| Sporobolus maritimus (Curtis) P.M.Peterson & Saarela | 122 images |
| Sporobolus michauxianus (Hitchc.) P.M.Peterson & Saarela | 62 images |
| Sporobolus neglectus Nash | 2 images |
| Sporobolus pumilus (Roth) P.M.Peterson & Saarela | 47 images |
| Sporobolus pyramidalis P.Beauv. | 5 images |
| Sporobolus pyramidatus (Lam.) Hitchc. | 4 images |
| Sporobolus schoenoides (L.) P.M.Peterson | 88 images |
| Sporobolus tenuissimus (Mart. ex Schrank) Kuntze | 3 images |
| Sporobolus vaginiflorus (Torr. ex A.Gray) Alph.Wood | 8 images |
| Sporobolus virginicus (L.) Kunth | 27 images |
| Stachys annua (L.) L. | 521 images |
| Stachys arvensis (L.) L. | 596 images |
| Stachys byzantina K.Koch | 7291 images |
| Stachys clingmanii Small | 6 images |
| Stachys floridana Shuttlew. ex Benth. | 108 images |
| Stachys germanica L. | 1388 images |
| Stachys palustris L. | 4866 images |
| Stachys pilosa Nutt. | 16 images |
| Stachys recta L. | 3262 images |
| Stachys tenuifolia Willd. | 10 images |
| Stachytarpheta jamaicensis (L.) Vahl | 1184 images |
| Stachytarpheta urticifolia Sims | 117 images |
| Stapfochloa elata (Desv.) P.M.Peterson | 3 images |
| Staphylea trifolia L. | 276 images |
| Steinchisma hians (Elliott) Nash | 4 images |
| Steinchisma laxum (Sw.) Zuloaga | 168 images |
| Stelis gelida (Lindl.) Pridgeon & M.W.Chase | 7 images |
| Stellaria alsine Grimm | 232 images |
| Stellaria apetala Ucria | 192 images |
| Stellaria aquatica (L.) Scop. | 1475 images |
| Stellaria cuspidata Willd. ex D.F.K.Schltdl. | 10 images |
| Stellaria graminea L. | 3897 images |
| Stellaria longifolia Muhl. ex Willd. | 9 images |
| Stellaria longipes Goldie | 21 images |
| Stellaria media (L.) Vill. | 12179 images |
| Stellaria pubera Michx. | 252 images |
| Stemodia durantifolia (L.) Sw. | 57 images |
| Stenandrium dulce (Cav.) Nees | 13 images |
| Stenanthium gramineum (Ker Gawl.) Morong | 18 images |
| Stenaria nigricans (Lam.) Terrell | 104 images |
| Stenochlaena tenuifolia (Desv.) T.Moore | 3 images |
| Stenotaphrum dimidiatum (L.) Brongn. | 26 images |
| Stenotaphrum secundatum (Walter) Kuntze | 476 images |
| Sterculia apetala (Jacq.) H.Karst. | 216 images |
| Stewartia malacodendron L. | 37 images |
| Stewartia ovata (Cav.) Weath. | 17 images |
| Stictocardia tiliifolia (Desr.) Hallier f. | 88 images |
| Stillingia sylvatica L. | 29 images |
| Stokesia laevis (Hill) Greene | 387 images |
| Streptopus amplexifolius (L.) DC. | 541 images |
| Streptopus lanceolatus (Aiton) Reveal | 93 images |
| Striga asiatica (L.) Kuntze | 121 images |
| Striga gesnerioides (Willd.) Vatke | 29 images |
| Strobilanthes alternata (Burm.f.) Moylan ex J.R.I.Wood | 730 images |
| Strobilanthes reptans (G.Forst.) Moylan ex Y.F.Deng & J.R.I.Wood | 40 images |
| Strophostyles helvola (L.) Elliott | 74 images |
| Strumpfia maritima Jacq. | 10 images |
| Strychnos spinosa Lam. | 155 images |
| Stuckenia pectinata (L.) Börner | 103 images |
| Stylisma patens (Desr.) Myint | 1 images |
| Stylisma villosa (Nash) House | 1 images |
| Stylophorum diphyllum (Michx.) Nutt. | 416 images |
| Stylosanthes hamata (L.) Taub. | 12 images |
| Styrax americanus Lam. | 25 images |
| Styrax grandifolius Aiton | 3 images |
| Styrax japonicus Siebold & Zucc. | 263 images |
| Suaeda linearis (Elliott) Moq. | 3 images |
| Suaeda maritima (L.) Dumort. | 845 images |
| Suriana maritima L. | 160 images |
| Swietenia mahagoni (L.) Jacq. | 277 images |
| Syagrus romanzoffiana (Cham.) Glassman | 1313 images |
| Symphoricarpos albus (L.) S.F.Blake | 9642 images |
| Symphoricarpos occidentalis (R.Br.) Hook. | 57 images |
| Symphoricarpos orbiculatus Moench | 3036 images |
| Symphyotrichum cordifolium (L.) G.L.Nesom | 733 images |
| Symphyotrichum drummondii (Lindl.) G.L.Nesom | 1 images |
| Symphyotrichum dumosum (L.) G.L.Nesom | 51 images |
| Symphyotrichum ericoides (L.) G.L.Nesom | 1498 images |
| Symphyotrichum laeve (L.) Á.Löve & D.Löve | 166 images |
| Symphyotrichum lanceolatum (Willd.) G.L.Nesom | 2867 images |
| Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve | 64 images |
| Symphyotrichum novae-angliae (L.) G.L.Nesom | 2515 images |
| Symphyotrichum novi-belgii (L.) G.L.Nesom | 5783 images |
| Symphyotrichum oblongifolium (Nutt.) G.L.Nesom | 43 images |
| Symphyotrichum ontarionis (Wiegand) G.L.Nesom | 7 images |
| Symphyotrichum oolentangiense (Riddell) G.L.Nesom | 212 images |
| Symphyotrichum patens (Aiton) G.L.Nesom | 2 images |
| Symphyotrichum pilosum (Willd.) G.L.Nesom | 282 images |
| Symphyotrichum praealtum (Poir.) G.L.Nesom | 5 images |
| Symphyotrichum puniceum (L.) Á.Löve & D.Löve | 96 images |
| Symphyotrichum racemosum (Elliott) G.L.Nesom | 7 images |
| Symphyotrichum sericeum (Vent.) G.L.Nesom | 10 images |
| Symphyotrichum shortii (Lindl.) G.L.Nesom | 9 images |
| Symphyotrichum subulatum (Michx.) G.L.Nesom | 719 images |
| Symphytum × uplandicum Nyman | 531 images |
| Symphytum officinale L. | 18775 images |
| Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton | 502 images |
| Symplocos paniculata (Thunb.) Miq. | 27 images |
| Symplocos tinctoria (L.) L'Hér. | 5 images |
| Synandra hispidula (Michx.) Baill. | 2 images |
| Synedrella nodiflora (L.) Gaertn. | 516 images |
| Syngonanthus flavidulus (Michx.) Ruhland | 22 images |
| Syngonium angustatum Schott | 519 images |
| Syngonium podophyllum Schott | 7159 images |
| Syringa vulgaris L. | 19944 images |
| Syringodium filiforme Kütz. | 4 images |
| Syzygium cumini (L.) Skeels | 1208 images |
| Syzygium jambos (L.) Alston | 1305 images |
| Tabebuia heterophylla (DC.) Britton | 435 images |
| Tabernaemontana alba Mill. | 76 images |
| Taenidia integerrima (L.) Drude | 43 images |
| Taenidia montana (Mack.) Cronquist | 1 images |
| Tagetes erecta L. | 13248 images |
| Tagetes filifolia Lag. | 61 images |
| Tagetes minuta L. | 916 images |
| Talinum fruticosum (L.) Juss. | 446 images |
| Talinum paniculatum (Jacq.) Gaertn. | 1738 images |
| Tamarindus indica L. | 1542 images |
| Tamarix africana Poir. | 492 images |
| Tamarix canariensis Willd. | 504 images |
| Tamarix gallica L. | 5842 images |
| Tamarix parviflora DC. | 3069 images |
| Tamarix ramosissima Ledeb. | 1508 images |
| Tanacetum balsamita L. | 511 images |
| Tanacetum parthenium (L.) Sch.Bip. | 7840 images |
| Tanacetum vulgare L. | 16731 images |
| Tara vesicaria (L.) Molinari, Sánchez Och. & Mayta | 3 images |
| Taraxacum erythrospermum Andrz. ex Besser | 1075 images |
| Taraxacum sect. Taraxacum F.H.Wigg. | 14225 images |
| Taxodium distichum (L.) Rich. | 8114 images |
| Taxus canadensis Marshall | 1073 images |
| Taxus floridana Nutt. ex Chapm. | 3 images |
| Tecoma stans (L.) Juss. ex Kunth | 5325 images |
| Tectaria incisa Cav. | 34 images |
| Teesdalia nudicaulis (L.) W.T.Aiton | 24 images |
| Telmatoblechnum serrulatum (Rich.) Perrie, D.J.Ohlsen & Brownsey | 320 images |
| Tephrosia cinerea (L.) Pers. | 25 images |
| Tephrosia onobrychoides Nutt. | 2 images |
| Tephrosia virginiana (L.) Pers. | 68 images |
| Terminalia buceras (L.) C.Wright | 100 images |
| Terminalia catappa L. | 2634 images |
| Terminalia molinetii M.Gómez | 1 images |
| Ternstroemia gymnanthera (Wight & Arn.) Bedd. | 1 images |
| Tetragonia tetragonoides (Pall.) Kuntze | 559 images |
| Tetragonotheca helianthoides L. | 4 images |
| Tetrapanax papyrifer (Hook.) K.Koch | 1116 images |
| Teucrium canadense L. | 559 images |
| Teucrium scorodonia L. | 7350 images |
| Thalassia testudinum Banks & Sol. ex K.D.Koenig | 7 images |
| Thalia dealbata Fraser | 311 images |
| Thalia geniculata L. | 161 images |
| Thalictrum clavatum DC. | 5 images |
| Thalictrum dasycarpum Fisch., C.A.Mey. & Avé-Lall. | 9 images |
| Thalictrum dioicum L. | 467 images |
| Thalictrum mirabile Small | 3 images |
| Thalictrum pubescens Pursh | 451 images |
| Thalictrum revolutum DC. | 20 images |
| Thaspium barbinode (Michx.) Nutt. | 33 images |
| Thaspium trifoliatum (L.) A.Gray | 22 images |
| Thelesperma filifolium (Hook.) A.Gray | 3 images |
| Thelesperma megapotamicum (Spreng.) Herter | 43 images |
| Thelypteris dentata (Forssk.) E.P.St.John | 179 images |
| Thelypteris grandis A.R.Sm. | 7 images |
| Thelypteris hispidula (Decne.) C.F.Reed | 17 images |
| Thelypteris kunthii (Desv.) C.V.Morton | 8 images |
| Thelypteris noveboracensis (L.) Nieuwl. | 243 images |
| Thelypteris opulenta (Kaulf.) Fosberg | 2 images |
| Thelypteris ovata R.P.St.John | 12 images |
| Thelypteris palustris Schott | 305 images |
| Thelypteris resinifera (Desv.) Proctor | 5 images |
| Thelypteris reticulata (L.) Proctor | 21 images |
| Thelypteris serrata (Cav.) Alston | 16 images |
| Themeda quadrivalvis (L.) Kuntze | 4 images |
| Thespesia populnea (L.) Sol. ex Corrêa | 1137 images |
| Thinopyrum elongatum (Host) D.R.Dewey | 21 images |
| Thinopyrum intermedium (Host) Barkworth & D.R.Dewey | 19 images |
| Thlaspi arvense L. | 2620 images |
| Thrinax radiata Lodd. ex Schult. & Schult.f. | 125 images |
| Thuja occidentalis L. | 6883 images |
| Thunbergia alata Bojer ex Sims | 3704 images |
| Thunbergia erecta (Benth.) T.Anderson | 1401 images |
| Thunbergia fragrans Roxb. | 242 images |
| Thunbergia grandiflora Roxb. | 1011 images |
| Thymelaea passerina (L.) Coss. & Germ. | 62 images |
| Thymophylla pentachaeta (DC.) Small | 91 images |
| Thymophylla tenuiloba (DC.) Small | 55 images |
| Thymus pulegioides L. | 2125 images |
| Tiarella cordifolia L. | 970 images |
| Tiarella stolonifera G.L.Nesom | 2 images |
| Tiarella wherryi Lakela | 34 images |
| Tidestromia lanuginosa (Nutt.) Standl. | 25 images |
| Tilia americana L. | 4327 images |
| Tillandsia balbisiana Schult. & Schult.f. | 4 images |
| Tillandsia bartramii Elliott | 30 images |
| Tillandsia fasciculata Sw. | 235 images |
| Tillandsia flexuosa Sw. | 18 images |
| Tillandsia ionantha Planch. | 801 images |
| Tillandsia paucifolia Baker | 147 images |
| Tillandsia pruinosa Sw. | 13 images |
| Tillandsia recurvata (L.) L. | 478 images |
| Tillandsia setacea Sw. | 5 images |
| Tillandsia usneoides (L.) L. | 828 images |
| Tillandsia utriculata L. | 149 images |
| Tillandsia variabilis Schltdl. | 5 images |
| Tipularia discolor (Pursh) Nutt. | 328 images |
| Tithonia diversifolia (Hemsl.) A.Gray | 1491 images |
| Tithonia rotundifolia (Mill.) S.F.Blake | 1096 images |
| Tomostima cuneifolia (Nutt.) Al-Shehbaz, M.Koch & Jordon-Thaden | 1 images |
| Toona ciliata M.Roem. | 173 images |
| Toona sinensis (A.Juss.) M.Roem. | 37 images |
| Torenia crustacea (L.) Cham. & Schltdl. | 144 images |
| Torenia fournieri Linden ex E.Fourn. | 45 images |
| Torilis africana Spreng. | 55 images |
| Torilis arvensis (Huds.) Link | 4521 images |
| Torilis japonica (Houtt.) DC. | 1406 images |
| Torilis nodosa (L.) Gaertn. | 850 images |
| Torreya taxifolia Arn. | 5 images |
| Torreyochloa pallida (Torr.) Church | 10 images |
| Tournefortia gnaphalodes (L.) R.Br. ex Roem. & Schult. | 66 images |
| Toxicodendron pubescens Mill. | 44 images |
| Toxicodendron radicans (L.) Kuntze | 4729 images |
| Toxicodendron rydbergii (Small ex Rydb.) Greene | 119 images |
| Toxicodendron vernix (L.) Kuntze | 67 images |
| Trachelospermum jasminoides (Lindl.) Lem. | 8903 images |
| Tradescantia bracteata Small ex Britton | 4 images |
| Tradescantia crassula Link & Otto | 1 images |
| Tradescantia fluminensis Vell. | 6472 images |
| Tradescantia gigantea Rose | 14 images |
| Tradescantia hirsutiflora Bush | 7 images |
| Tradescantia occidentalis (Britton) Smyth | 95 images |
| Tradescantia ohiensis Raf. | 799 images |
| Tradescantia pallida (Rose) D.R.Hunt | 9120 images |
| Tradescantia reverchonii Bush | 21 images |
| Tradescantia spathacea Sw. | 4582 images |
| Tradescantia subaspera Ker Gawl. | 54 images |
| Tradescantia virginiana L. | 4738 images |
| Tradescantia zebrina Bosse | 7723 images |
| Tragia cordata Michx. | 13 images |
| Tragia ramosa Torr. | 38 images |
| Tragia urticifolia Michx. | 14 images |
| Tragopogon dubius Scop. | 5588 images |
| Tragopogon porrifolius L. | 4748 images |
| Tragopogon pratensis L. | 7915 images |
| Tragus berteronianus Schult. | 74 images |
| Tragus racemosus (L.) All. | 161 images |
| Trapa natans L. | 319 images |
| Trautvetteria caroliniensis (Walter) Vail | 34 images |
| Trema micranthum (L.) Blume | 155 images |
| Triadica sebifera (L.) Small | 617 images |
| Triantha glutinosa (Michx.) Baker | 39 images |
| Triantha racemosa (Walter) Small | 1 images |
| Trianthema portulacastrum L. | 271 images |
| Tribulus cistoides L. | 199 images |
| Tribulus terrestris L. | 2111 images |
| Trichomanes krausii Hook. & Grev. | 12 images |
| Trichomanes membranaceum L. | 13 images |
| Trichophorum cespitosum (L.) Hartm. | 349 images |
| Trichostema brachiatum L. | 24 images |
| Trichostema dichotomum L. | 125 images |
| Trichostema setaceum Houtt. | 4 images |
| Trichostigma octandrum (L.) H.Walter | 88 images |
| Tridax procumbens L. | 501 images |
| Tridens albescens (Vasey) Wooton & Standl. | 5 images |
| Tridens flavus (L.) Hitchc. | 62 images |
| Tridens strictus (Nutt.) Nash | 2 images |
| Tridentopsis mutica (Torr.) P.M.Peterson | 3 images |
| Trifolium angustifolium L. | 1489 images |
| Trifolium arvense L. | 3256 images |
| Trifolium attenuatum Greene | 4 images |
| Trifolium aureum Pollich | 790 images |
| Trifolium campestre Schreb. | 3735 images |
| Trifolium dubium Sibth. | 3032 images |
| Trifolium hybridum L. | 1429 images |
| Trifolium incarnatum L. | 6735 images |
| Trifolium lappaceum L. | 171 images |
| Trifolium nanum Torr. | 9 images |
| Trifolium nigrescens Viv. | 729 images |
| Trifolium pratense L. | 17402 images |
| Trifolium reflexum L. | 2 images |
| Trifolium repens L. | 11954 images |
| Trifolium resupinatum L. | 1350 images |
| Trifolium stoloniferum Muhl. | 1 images |
| Trifolium striatum L. | 235 images |
| Trifolium tomentosum L. | 468 images |
| Trifolium vesiculosum Savi | 71 images |
| Trillium catesbaei Elliott | 72 images |
| Trillium cernuum L. | 72 images |
| Trillium cuneatum Raf. | 294 images |
| Trillium decumbens Harb. | 1 images |
| Trillium discolor Hook. | 6 images |
| Trillium erectum L. | 1026 images |
| Trillium flexipes Raf. | 67 images |
| Trillium grandiflorum (Michx.) Salisb. | 954 images |
| Trillium lancifolium Raf. | 4 images |
| Trillium luteum (Muhl.) Harb. | 25 images |
| Trillium maculatum Raf. | 13 images |
| Trillium nivale Riddell | 30 images |
| Trillium pusillum Michx. | 3 images |
| Trillium recurvatum L.C.Beck | 11 images |
| Trillium rugelii Rendle | 22 images |
| Trillium sessile L. | 307 images |
| Trillium simile Gleason | 15 images |
| Trillium sulcatum T.S.Patrick | 4 images |
| Trillium underwoodii Small | 9 images |
| Trillium undulatum Willd. | 254 images |
| Trillium vaseyi Harb. | 4 images |
| Trillium viridescens Nutt. | 6 images |
| Triodanis perfoliata (L.) Nieuwl. | 560 images |
| Triosteum angustifolium L. | 9 images |
| Triosteum aurantiacum E.P.Bicknell | 6 images |
| Triosteum perfoliatum L. | 50 images |
| Triphasia trifolia (Burm.f.) P.Wilson | 64 images |
| Triphora amazonica Schltr. | 6 images |
| Triphora trianthophoros (Sw.) Rydb. | 9 images |
| Tripidium ravennae (L.) H.Scholz | 88 images |
| Triplasis purpurea (Walter) Chapm. | 3 images |
| Tripleurospermum inodorum (L.) Sch.Bip. | 1390 images |
| Tripleurospermum maritimum (L.) W.D.J.Koch | 702 images |
| Tripsacum dactyloides (L.) L. | 77 images |
| Trisetum flavescens (L.) P.Beauv. | 548 images |
| Triticum aestivum L. | 21271 images |
| Triumfetta pentandra A.Rich. | 19 images |
| Triumfetta rhomboidea Jacq. | 156 images |
| Triumfetta semitriloba Jacq. | 60 images |
| Trollius laxus Salisb. | 22 images |
| Tsuga canadensis (L.) Carrière | 1292 images |
| Tsuga caroliniana Engelm. | 37 images |
| Tulipa gesneriana L. | 9416 images |
| Tulipa sylvestris L. | 3797 images |
| Turnera subulata Sm. | 1010 images |
| Turnera ulmifolia L. | 1585 images |
| Turritis glabra L. | 839 images |
| Tussilago farfara L. | 11654 images |
| Typha × glauca Godr. | 49 images |
| Typha angustifolia L. | 994 images |
| Typha domingensis Pers. | 202 images |
| Typha latifolia L. | 3339 images |
| Ulmus alata Michx. | 495 images |
| Ulmus americana L. | 4319 images |
| Ulmus crassifolia Nutt. | 196 images |
| Ulmus minor Mill. | 14408 images |
| Ulmus parvifolia Jacq. | 1021 images |
| Ulmus pumila L. | 2826 images |
| Ulmus rubra Muhl. | 134 images |
| Ulmus serotina Sarg. | 29 images |
| Ulmus thomasii Sarg. | 160 images |
| Uniola paniculata L. | 83 images |
| Urena lobata L. | 915 images |
| Urochloa arrecta (Hack.) Morrone & Zuloaga | 5 images |
| Urochloa brizantha (A.Rich.) R.D.Webster | 4 images |
| Urochloa deflexa (Schumach.) H.Scholz | 3 images |
| Urochloa dictyoneura (Fig. & De Not.) Veldkamp | 5 images |
| Urochloa fusca (Sw.) B.F.Hansen & Wunderlin | 16 images |
| Urochloa mutica (Forssk.) T.Q.Nguyen | 10 images |
| Urochloa piligera (F.Muell. ex Benth.) R.D.Webster | 1 images |
| Urochloa plantaginea (Link) R.D.Webster | 1 images |
| Urochloa polystachya (Kunth) Mabb. | 8 images |
| Urochloa ramosa (L.) T.Q.Nguyen | 7 images |
| Urochloa reptans (L.) Stapf | 4 images |
| Urochloa subquadripara (Trin.) R.D.Webster | 4 images |
| Urtica chamaedryoides Pursh | 42 images |
| Urtica dioica L. | 14209 images |
| Urtica gracilis Aiton | 1 images |
| Urtica urens L. | 4162 images |
| Utricularia amethystina Salzm. ex A.St.-Hil. & Girard | 3 images |
| Utricularia floridana Nash | 13 images |
| Utricularia foliosa L. | 33 images |
| Utricularia geminiscapa Benj. | 10 images |
| Utricularia gibba L. | 43 images |
| Utricularia inflata Walter | 2 images |
| Utricularia intermedia Hayne | 80 images |
| Utricularia juncea Vahl | 4 images |
| Utricularia minor L. | 130 images |
| Utricularia purpurea Walter | 12 images |
| Utricularia radiata Small | 12 images |
| Utricularia simulans Pilg. | 1 images |
| Utricularia striata Leconte ex Torr. | 8 images |
| Utricularia subulata L. | 33 images |
| Uvularia grandiflora Sm. | 250 images |
| Uvularia perfoliata L. | 72 images |
| Uvularia puberula Michx. | 10 images |
| Uvularia sessilifolia L. | 127 images |
| Vaccinium angustifolium Aiton | 648 images |
| Vaccinium arboreum Marshall | 165 images |
| Vaccinium caesariense Mack. | 1 images |
| Vaccinium corymbosum L. | 2406 images |
| Vaccinium crassifolium Andrews | 2 images |
| Vaccinium erythrocarpum Michx. | 3 images |
| Vaccinium hirsutum Buckley | 1 images |
| Vaccinium macrocarpon Aiton | 313 images |
| Vaccinium myrsinites Lam. | 41 images |
| Vaccinium oxycoccos L. | 446 images |
| Vaccinium pallidum Aiton | 150 images |
| Vaccinium stamineum L. | 163 images |
| Vachellia choriophylla (Benth.) Seigler & Ebinger | 1 images |
| Vachellia cornigera (L.) Seigler & Ebinger | 99 images |
| Vachellia farnesiana (L.) Wight & Arn. | 1429 images |
| Vachellia macracantha (Humb. & Bonpl. ex Willd.) Seigler & Ebinger | 21 images |
| Vachellia seyal (Delile) P.J.H.Hurter | 161 images |
| Vachellia tortuosa (L.) Seigler & Ebinger | 54 images |
| Valeriana dentata (L.) All. | 214 images |
| Valeriana locusta L. | 6272 images |
| Valeriana officinalis L. | 7666 images |
| Valeriana pauciflora Michx. | 50 images |
| Valeriana scandens L. | 1 images |
| Valeriana umbilicata (Sull.) Christenh. & Byng | 13 images |
| Valeriana woodsiana (Torr. & A.Gray) Christenh. & Byng | 154 images |
| Vallisneria americana Michx. | 8 images |
| Vanilla barbellata Rchb.f. | 10 images |
| Vanilla planifolia Andrews | 316 images |
| Varronia bullata L. | 16 images |
| Varronia curassavica Jacq. | 219 images |
| Veratrum viride Aiton | 603 images |
| Verbascum blattaria L. | 3170 images |
| Verbascum lychnitis L. | 3407 images |
| Verbascum phlomoides L. | 2829 images |
| Verbascum phoeniceum L. | 767 images |
| Verbascum sinuatum L. | 5603 images |
| Verbascum thapsus L. | 16216 images |
| Verbascum virgatum Stokes | 1394 images |
| Verbena bipinnatifida Schauer | 396 images |
| Verbena bonariensis L. | 8274 images |
| Verbena bracteata Cav. ex Lag. & Rodr. | 36 images |
| Verbena brasiliensis Vell. | 697 images |
| Verbena canadensis (L.) Britton | 136 images |
| Verbena canescens Kunth | 18 images |
| Verbena halei Small | 179 images |
| Verbena hastata L. | 1020 images |
| Verbena incompta P.W.Michael | 5 images |
| Verbena officinalis L. | 7228 images |
| Verbena pumila Rydb. | 33 images |
| Verbena rigida Spreng. | 1583 images |
| Verbena simplex Lehm. | 67 images |
| Verbena stricta Vent. | 313 images |
| Verbena supina L. | 47 images |
| Verbena tenera Spreng. | 294 images |
| Verbena tweedieana Niven ex Hook. | 13 images |
| Verbena urticifolia L. | 751 images |
| Verbena xutha Lehm. | 4 images |
| Verbesina alternifolia (L.) Britton ex Kearney | 562 images |
| Verbesina encelioides (Cav.) Benth. & Hook.f. ex A.Gray | 476 images |
| Verbesina helianthoides Michx. | 22 images |
| Verbesina occidentalis Walter | 175 images |
| Verbesina virginica L. | 358 images |
| Verbesina walteri Shinners | 8 images |
| Vernicia fordii (Hemsl.) Airy Shaw | 64 images |
| Vernonia angustifolia Michx. | 36 images |
| Vernonia arkansana DC. | 36 images |
| Vernonia baldwinii Torr. | 662 images |
| Vernonia blodgettii Small | 2 images |
| Vernonia fasciculata Michx. | 109 images |
| Vernonia gigantea (Walter) Trel. | 13 images |
| Vernonia glauca Willd. | 4 images |
| Vernonia lindheimeri A.Gray & Engelm. | 2 images |
| Vernonia missurica Raf. | 22 images |
| Vernonia noveboracensis (L.) Michx. | 591 images |
| Vernonia texana (A.Gray) Small | 7 images |
| Veronica agrestis L. | 1453 images |
| Veronica anagallis-aquatica L. | 1514 images |
| Veronica arvensis L. | 3055 images |
| Veronica beccabunga L. | 2503 images |
| Veronica catenata Pennell | 105 images |
| Veronica chamaedrys L. | 17985 images |
| Veronica cymbalaria Bodard | 1645 images |
| Veronica dillenii Crantz | 46 images |
| Veronica filiformis Sm. | 3035 images |
| Veronica hederifolia L. | 3164 images |
| Veronica longifolia L. | 1587 images |
| Veronica officinalis L. | 3085 images |
| Veronica peregrina L. | 320 images |
| Veronica persica Poir. | 14283 images |
| Veronica polita Fr. | 2332 images |
| Veronica scutellata L. | 270 images |
| Veronica serpyllifolia L. | 3391 images |
| Veronica sublobata M.A.Fisch. | 804 images |
| Veronica teucrium L. | 695 images |
| Veronicastrum virginicum (L.) Farw. | 1083 images |
| Viburnum acerifolium L. | 629 images |
| Viburnum cassinoides L. | 7 images |
| Viburnum dentatum L. | 571 images |
| Viburnum dilatatum Thunb. | 123 images |
| Viburnum lantana L. | 13769 images |
| Viburnum lantanoides Michx. | 636 images |
| Viburnum lentago L. | 263 images |
| Viburnum nudum L. | 228 images |
| Viburnum obovatum Walter | 24 images |
| Viburnum opulus L. | 19289 images |
| Viburnum plicatum Thunb. | 4366 images |
| Viburnum prunifolium L. | 444 images |
| Viburnum rafinesqueanum Schult. | 3 images |
| Viburnum recognitum Fernald | 60 images |
| Viburnum rhytidophyllum Hemsl. | 5657 images |
| Viburnum rufidulum Raf. | 236 images |
| Viburnum setigerum Hance | 18 images |
| Viburnum sieboldii Miq. | 67 images |
| Viburnum suspensum Lindl. | 85 images |
| Viburnum trilobum Marshall | 1456 images |
| Vicia acutifolia Elliott | 5 images |
| Vicia americana Muhl. ex Willd. | 71 images |
| Vicia caroliniana Walter | 49 images |
| Vicia grandiflora Scop. | 392 images |
| Vicia hirsuta (L.) Gray | 2024 images |
| Vicia lathyroides L. | 368 images |
| Vicia ludoviciana Nutt. | 28 images |
| Vicia lutea L. | 816 images |
| Vicia pannonica Crantz | 543 images |
| Vicia sativa L. | 13518 images |
| Vicia tetrasperma (L.) Schreb. | 521 images |
| Vicia villosa Roth | 8400 images |
| Vigna luteola (Jacq.) Benth. | 216 images |
| Vigna unguiculata (L.) Walp. | 270 images |
| Vinca major L. | 16155 images |
| Vinca minor L. | 15522 images |
| Vincetoxicum nigrum (L.) Moench | 505 images |
| Viola arvensis Murray | 4944 images |
| Viola blanda Willd. | 261 images |
| Viola canadensis L. | 223 images |
| Viola cucullata Aiton | 27 images |
| Viola hastata Michx. | 84 images |
| Viola hirsutula Brainerd | 4 images |
| Viola inconspicua Blume | 9 images |
| Viola labradorica Schrank | 216 images |
| Viola lanceolata L. | 55 images |
| Viola macloskeyi F.E.Lloyd | 10 images |
| Viola nephrophylla Greene | 1 images |
| Viola odorata L. | 14656 images |
| Viola palmata L. | 19 images |
| Viola pedata L. | 166 images |
| Viola pedatifida G.Don | 17 images |
| Viola pubescens Aiton | 761 images |
| Viola rostrata Muhl. ex Pursh | 84 images |
| Viola rotundifolia Michx. | 45 images |
| Viola sagittata Aiton | 102 images |
| Viola septemloba Leconte | 14 images |
| Viola sororia Willd. | 1606 images |
| Viola striata Aiton | 262 images |
| Viola tricolor L. | 7913 images |
| Viola tripartita Elliott | 6 images |
| Viola villosa Walter | 8 images |
| Viola walteri House | 7 images |
| Visnaga daucoides Gaertn. | 1341 images |
| Vitex agnus-castus L. | 6059 images |
| Vitex negundo L. | 285 images |
| Vitex trifolia L. | 594 images |
| Vitis aestivalis Michx. | 1304 images |
| Vitis cinerea (Engelm.) Millardet | 2 images |
| Vitis labrusca L. | 493 images |
| Vitis mustangensis Buckley | 196 images |
| Vitis riparia Michx. | 699 images |
| Vitis rotundifolia Michx. | 1464 images |
| Vitis rupestris Scheele | 38 images |
| Vitis vulpina L. | 972 images |
| Vittaria lineata (L.) Sm. | 21 images |
| Wahlenbergia linarioides (Lam.) A.DC. | 23 images |
| Wahlenbergia marginata (Thunb.) A.DC. | 5 images |
| Waldsteinia fragarioides (Michx.) Tratt. | 34 images |
| Waltheria indica L. | 412 images |
| Washingtonia filifera (Rafarin) H.Wendl. ex de Bary | 65 images |
| Washingtonia robusta H.Wendl. | 2803 images |
| Weigela florida (Bunge) A.DC. | 8545 images |
| Wisteria floribunda (Willd.) DC. | 3106 images |
| Wisteria frutescens (L.) Poir. | 823 images |
| Wisteria sinensis (Sims) DC. | 1613 images |
| Wisteriopsis reticulata (Benth.) J.Compton & Schrire | 18 images |
| Wolffia brasiliensis Wedd. | 270 images |
| Wolffia columbiana H.Karst. | 1 images |
| Wolffia globosa (Roxb.) Hartog & Plas | 1 images |
| Wolffiella gladiata (Hegelm.) Hegelm. | 1 images |
| Woodsia ilvensis (L.) R.Br. | 93 images |
| Woodsia obtusa (Spreng.) Torr. | 12 images |
| Woodwardia radicans (L.) Sm. | 375 images |
| Woodwardia virginica (L.) Sm. | 18 images |
| Xanthium chinense Mill. | 1 images |
| Xanthium orientale L. | 453 images |
| Xanthium spinosum L. | 959 images |
| Xanthorhiza simplicissima Marshall | 56 images |
| Xanthosoma sagittifolium (L.) Schott | 1082 images |
| Xenostegia tridentata (L.) D.F.Austin & Staples | 41 images |
| Xerophyllum asphodeloides (L.) Nutt. | 9 images |
| Ximenia americana L. | 210 images |
| Xylosma congesta (Lour.) Merr. | 3 images |
| Xyris caroliniana Walter | 9 images |
| Xyris difformis Chapm. | 2 images |
| Xyris jupicai Rich. | 346 images |
| Xyris laxifolia Mart. | 11 images |
| Xyris tennesseensis Kral | 30 images |
| Xyris torta Sm. | 7 images |
| Yeatesia viridiflora (Nees) Small | 3 images |
| Youngia japonica (L.) DC. | 1152 images |
| Yucca aloifolia L. | 3681 images |
| Yucca arkansana Trel. | 60 images |
| Yucca filamentosa L. | 4739 images |
| Yucca flaccida Haw. | 231 images |
| Yucca gloriosa L. | 7702 images |
| Zamia integrifolia L.f. | 26 images |
| Zannichellia palustris L. | 59 images |
| Zanthoxylum americanum Mill. | 216 images |
| Zanthoxylum clava-herculis L. | 150 images |
| Zanthoxylum fagara (L.) Sarg. | 175 images |
| Zea mays L. | 23885 images |
| Zea mexicana (Schrad.) Kuntze | 2 images |
| Zeltnera texensis (Griseb.) G.Mans. ex J.S.Pringle | 1 images |
| Zenobia pulverulenta (W.Bartram) Pollard | 10 images |
| Zephyranthes atamasco (L.) Herb. | 53 images |
| Zephyranthes candida Herb. | 3 images |
| Zephyranthes carinata Herb. | 179 images |
| Zephyranthes chlorosolen (Herb.) D.Dietr. | 1 images |
| Zephyranthes citrina Baker | 116 images |
| Zephyranthes drummondii D.Don | 3 images |
| Zephyranthes robusta (Herb.) Baker | 397 images |
| Zephyranthes rosea Lindl. | 1058 images |
| Zephyranthes treatiae S.Watson | 9 images |
| Zephyranthes tubispatha (L'Hér.) Herb. | 11 images |
| Zeuxine strateumatica (L.) Schltr. | 49 images |
| Zigadenus glaberrimus Michx. | 3 images |
| Zingiber zerumbet (L.) Roscoe ex Sm. | 300 images |
| Zinnia elegans Jacq. | 4358 images |
| Zinnia peruviana (L.) L. | 2548 images |
| Zizania aquatica L. | 12 images |
| Zizia aptera (A.Gray) Fernald | 213 images |
| Zizia aurea (L.) W.D.J.Koch | 56 images |
| Zizia trifoliata (Michx.) Fernald | 6 images |
| Ziziphus jujuba Mill. | 2516 images |
| Ziziphus mauritiana Lam. | 523 images |
| Zornia latifolia Sm. | 10 images |
| Zostera marina L. | 126 images |
| Zoysia japonica Steud. | 9 images |
| Zoysia matrella (L.) Merr. | 36 images |