| Abies balsamea (L.) Mill. | 948 images |
| Abutilon theophrasti Medik. | 2892 images |
| Acalypha rhomboidea Raf. | 3 images |
| Acanthospermum hispidum DC. | 112 images |
| Acer campestre L. | 18789 images |
| Acer pensylvanicum L. | 784 images |
| Acer pseudoplatanus L. | 21693 images |
| Acer rubrum L. | 5861 images |
| Acer saccharinum L. | 7579 images |
| Acer saccharum Marshall | 1662 images |
| Acer spicatum Lam. | 424 images |
| Achillea alpina L. | 18 images |
| Achillea distans Waldst. & Kit. ex Willd. | 2135 images |
| Achillea filipendulina Lam. | 5428 images |
| Achillea millefolium L. | 25092 images |
| Achillea pannonica Scheele | 21 images |
| Achillea ptarmica L. | 3194 images |
| Achyranthes bidentata Blume | 25 images |
| Aconitum × cammarum L. | 2 images |
| Acorus calamus L. | 630 images |
| Actaea pachypoda Elliott | 795 images |
| Actaea racemosa L. | 603 images |
| Actaea rubra (Aiton) Willd. | 704 images |
| Adenocaulon bicolor Hook. | 135 images |
| Adiantum pedatum L. | 554 images |
| Adlumia fungosa (Aiton) Britton, Sterns & Poggenb. | 8 images |
| Adoxa moschatellina L. | 764 images |
| Aegopodium podagraria L. | 11418 images |
| Aesculus glabra Willd. | 895 images |
| Aesculus hippocastanum L. | 16809 images |
| Aethusa cynapium L. | 1792 images |
| Agalinis maritima (Raf.) Raf. | 6 images |
| Agalinis purpurea (L.) Pennell | 165 images |
| Agalinis skinneriana (Alph.Wood ex A.Gray) Britton | 8 images |
| Agalinis tenuifolia (Vahl) Raf. | 101 images |
| Agastache foeniculum (Pursh) Kuntze | 1806 images |
| Agastache nepetoides (L.) Kuntze | 63 images |
| Agastache scrophulariifolia (Willd.) Kuntze | 19 images |
| Ageratina altissima (L.) R.M.King & H.Rob. | 1086 images |
| Agoseris aurantiaca (Hook.) Greene | 46 images |
| Agoseris glauca (Pursh) Raf. | 33 images |
| Agrimonia gryposepala Wallr. | 308 images |
| Agrimonia pubescens Wallr. | 20 images |
| Agrimonia striata Michx. | 18 images |
| Agropyron cristatum (L.) Gaertn. | 108 images |
| Agrostemma githago L. | 3776 images |
| Agrostis canina L. | 50 images |
| Agrostis capillaris L. | 1545 images |
| Agrostis gigantea Roth | 136 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 | 11666 images |
| Aira praecox L. | 100 images |
| Ajuga genevensis L. | 4027 images |
| Ajuga reptans L. | 21634 images |
| Alcea rosea L. | 14464 images |
| Alchemilla alpina L. | 1569 images |
| Alchemilla arvensis (L.) Scop. | 468 images |
| Alchemilla filicaulis Buser | 51 images |
| Alchemilla glabra Neygenf. | 164 images |
| Alchemilla glaucescens Wallr. | 35 images |
| Alchemilla micans Buser | 4 images |
| Alchemilla mollis (Buser) Rothm. | 2654 images |
| Alchemilla monticola Opiz | 637 images |
| Alchemilla subcrenata Buser | 61 images |
| Alchemilla vulgaris L. | 250 images |
| Alchemilla xanthochlora Rothm. | 2068 images |
| Aletris farinosa L. | 19 images |
| Alisma gramineum Lej. | 21 images |
| Alisma subcordatum Raf. | 28 images |
| Alisma triviale Pursh | 35 images |
| Alliaria petiolata (M.Bieb.) Cavara & Grande | 30764 images |
| Allium canadense L. | 316 images |
| Allium cernuum Roth | 235 images |
| Allium oleraceum L. | 648 images |
| Allium schoenoprasum L. | 4350 images |
| Allium stellatum Nutt. ex Ker Gawl. | 19 images |
| Allium tricoccum Aiton | 398 images |
| Allium vineale L. | 3232 images |
| Alnus alnobetula (Ehrh.) K.Koch | 1599 images |
| Alnus glutinosa (L.) Gaertn. | 15130 images |
| Alnus incana (L.) Moench | 2462 images |
| Alnus serrulata (Aiton) Willd. | 130 images |
| Alopecurus aequalis Sobol. | 119 images |
| Alopecurus arundinaceus Poir. | 36 images |
| Alopecurus geniculatus L. | 113 images |
| Alopecurus magellanicus Lam. | 12 images |
| Alopecurus pratensis L. | 2738 images |
| Althaea officinalis L. | 3242 images |
| Alyssum alyssoides (L.) L. | 1047 images |
| Amaranthus albus L. | 492 images |
| Amaranthus blitoides S.Watson | 496 images |
| Amaranthus blitum L. | 2200 images |
| Amaranthus hybridus L. | 1404 images |
| Amaranthus hypochondriacus L. | 1206 images |
| Amaranthus palmeri S.Watson | 117 images |
| Amaranthus powellii S.Watson | 82 images |
| Amaranthus retroflexus L. | 8287 images |
| Amaranthus spinosus L. | 1285 images |
| Amaranthus viridis L. | 1524 images |
| Ambrosia artemisiifolia L. | 4743 images |
| Ambrosia psilostachya DC. | 359 images |
| Ambrosia trifida L. | 976 images |
| Amelanchier alnifolia (Nutt.) Nutt. ex M.Roem. | 615 images |
| Amelanchier arborea (F.Michx.) Fernald | 31 images |
| Amelanchier bartramiana (Tausch) M.Roem. | 3 images |
| Amelanchier canadensis (L.) Medik. | 2315 images |
| Amelanchier interior E.L.Nielsen | 2 images |
| Amelanchier laevis Wiegand | 174 images |
| Amelanchier stolonifera Wiegand | 7 images |
| Ammannia robusta Heer & Regel | 5 images |
| Amphicarpaea bracteata (L.) Fernald | 417 images |
| Anaphalis margaritacea (L.) Benth. & Hook.f. | 1292 images |
| Anchusa arvensis (L.) M.Bieb. | 2669 images |
| Anchusa officinalis L. | 4541 images |
| Andromeda polifolia L. | 558 images |
| Andropogon gerardi Vitman | 181 images |
| Andropogon virginicus L. | 3 images |
| Androsace occidentalis Pursh | 5 images |
| Androsace septentrionalis L. | 159 images |
| Anemonastrum canadense (L.) Mosyakin | 851 images |
| Anemone cylindrica A.Gray | 14 images |
| Anemone multifida Poir. | 97 images |
| Anemone parviflora Michx. | 15 images |
| Anemone virginiana L. | 319 images |
| Anemonella thalictroides (L.) Spach | 381 images |
| Anemonoides quinquefolia (L.) Holub | 1265 images |
| Anethum graveolens L. | 2460 images |
| Angelica atropurpurea L. | 371 images |
| Angelica lucida L. | 44 images |
| Angelica sylvestris L. | 9205 images |
| Anoda cristata (L.) Schltdl. | 61 images |
| Antennaria alpina (L.) Gaertn. | 29 images |
| Antennaria howellii Greene | 21 images |
| Antennaria microphylla Rydb. | 5 images |
| Antennaria monocephala DC. | 2 images |
| Antennaria neglecta Greene | 181 images |
| Antennaria parlinii Fernald | 24 images |
| Antennaria parvifolia Nutt. | 88 images |
| Antennaria plantaginifolia (L.) Hook. | 199 images |
| Antennaria rosea Greene | 2 images |
| Anthemis arvensis L. | 3862 images |
| Anthemis cotula L. | 1487 images |
| Anthoxanthum aristatum Boiss. | 54 images |
| Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp | 72 images |
| Anthoxanthum odoratum L. | 2211 images |
| Anthriscus caucalis M.Bieb. | 1700 images |
| Anthriscus cerefolium (L.) Hoffm. | 3015 images |
| Anthriscus sylvestris (L.) Hoffm. | 19316 images |
| Anthyllis vulneraria L. | 8248 images |
| Anticlea elegans (Pursh) Rydb. | 41 images |
| Antirrhinum majus L. | 14608 images |
| Apera interrupta (L.) P.Beauv. | 31 images |
| Apera spica-venti (L.) P.Beauv. | 64 images |
| Apios americana Medik. | 295 images |
| Apium graveolens L. | 1878 images |
| Aplectrum hyemale (Muhl. ex Willd.) Torr. | 28 images |
| Apocynum androsaemifolium L. | 995 images |
| Apocynum cannabinum L. | 880 images |
| Aquilegia brevistyla Hook. | 1 images |
| Aquilegia canadensis L. | 1848 images |
| Aquilegia vulgaris L. | 20344 images |
| Arabidopsis arenosa (L.) Lawalrée | 1210 images |
| Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz | 2 images |
| Arabidopsis thaliana (L.) Heynh. | 2087 images |
| Arabis alpina L. | 1729 images |
| Arabis caucasica Willd. | 733 images |
| Aralia elata (Miq.) Seem. | 736 images |
| Aralia hispida Vent. | 63 images |
| Aralia nudicaulis L. | 785 images |
| Aralia racemosa L. | 264 images |
| Arctium × nothum (Ruhmer) J.Weiss | 10 images |
| Arctium lappa L. | 9754 images |
| Arctium minus (Hill) Bernh. | 11311 images |
| Arctium tomentosum Mill. | 1892 images |
| Arctostaphylos uva-ursi (L.) Spreng. | 2000 images |
| Arctous alpina (L.) Nied. | 274 images |
| Arenaria serpyllifolia L. | 1306 images |
| Arethusa bulbosa L. | 42 images |
| Argemone mexicana L. | 1100 images |
| Argentina anserina (L.) Rydb. | 4750 images |
| Arisaema dracontium (L.) Schott | 338 images |
| Arisaema triphyllum (L.) Schott | 2019 images |
| Aristolochia clematitis L. | 2825 images |
| Aristolochia macrophylla Lam. | 694 images |
| Armeria maritima (Mill.) Willd. | 5568 images |
| Armoracia rusticana G.Gaertn., B.Mey. & Scherb. | 246 images |
| Arnica angustifolia Vahl | 2 images |
| Arnica chamissonis Less. | 83 images |
| Arnica cordifolia Hook. | 196 images |
| Arnica lanceolata Nutt. | 20 images |
| Arnica lonchophylla Greene | 4 images |
| Arnoglossum plantagineum Raf. | 47 images |
| Aronia × prunifolia (Marshall) Rehder | 18 images |
| Aronia arbutifolia (L.) Pers. | 154 images |
| Aronia melanocarpa (Michx.) Elliott | 2990 images |
| Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl | 1833 images |
| Artemisia abrotanum L. | 1320 images |
| Artemisia absinthium L. | 4749 images |
| Artemisia annua L. | 3418 images |
| Artemisia biennis Willd. | 132 images |
| Artemisia campestris L. | 1598 images |
| Artemisia dracunculus L. | 2251 images |
| Artemisia frigida Willd. | 110 images |
| Artemisia ludoviciana Nutt. | 1101 images |
| Artemisia pontica L. | 73 images |
| Artemisia stelleriana Besser | 171 images |
| Artemisia tilesii Ledeb. | 7 images |
| Artemisia vulgaris L. | 16577 images |
| Aruncus dioicus (Walter) Fernald | 4359 images |
| Asarum canadense L. | 595 images |
| Asclepias exaltata L. | 95 images |
| Asclepias hirtella (Pennell) Woodson | 16 images |
| Asclepias incarnata L. | 1088 images |
| Asclepias ovalifolia Decne. | 6 images |
| Asclepias purpurascens L. | 520 images |
| Asclepias quadrifolia Jacq. | 89 images |
| Asclepias sullivantii Engelm. ex A.Gray | 271 images |
| Asclepias syriaca L. | 3575 images |
| Asclepias tuberosa L. | 2192 images |
| Asclepias variegata L. | 134 images |
| Asclepias verticillata L. | 186 images |
| Asclepias viridiflora Raf. | 212 images |
| Asimina triloba (L.) Dunal | 1387 images |
| Asparagus officinalis L. | 3040 images |
| Asperugo procumbens L. | 410 images |
| Asplenium platyneuron (L.) Britton, Sterns & Poggenb. | 350 images |
| Asplenium rhizophyllum L. | 79 images |
| Asplenium ruta-muraria L. | 1894 images |
| Asplenium scolopendrium L. | 6120 images |
| Asplenium trichomanes L. | 5760 images |
| Asplenium viride Huds. | 564 images |
| Aster alpinus L. | 3182 images |
| Astragalus alpinus L. | 339 images |
| Astragalus canadensis L. | 42 images |
| Astragalus racemosus Pursh | 20 images |
| Atocion armeria (L.) Raf. | 2692 images |
| Atriplex glabriuscula Edmondston | 86 images |
| Atriplex hortensis L. | 1034 images |
| Atriplex laciniata L. | 486 images |
| Atriplex littoralis L. | 287 images |
| Atriplex micrantha Ledeb. | 66 images |
| Atriplex oblongifolia Waldst. & Kit. | 15 images |
| Atriplex patula L. | 701 images |
| Atriplex prostrata Boucher ex DC. | 1283 images |
| Atriplex rosea L. | 38 images |
| Aureolaria flava (L.) Farw. | 50 images |
| Aureolaria grandiflora (Benth.) Pennell | 53 images |
| Aureolaria virginica (L.) Pennell | 34 images |
| Aurinia saxatilis (L.) Desv. | 2761 images |
| Avena fatua L. | 2470 images |
| Avena sativa L. | 3642 images |
| Avena sterilis L. | 248 images |
| Avenella flexuosa (L.) Drejer | 434 images |
| Avenula pubescens (Huds.) Dumort. | 109 images |
| Azolla caroliniana Willd. | 14 images |
| Baccharis halimifolia L. | 1533 images |
| Baldellia ranunculoides (L.) Parl. | 402 images |
| Baptisia alba (L.) R.Br. | 116 images |
| Baptisia tinctoria (L.) R.Br. | 46 images |
| Barbarea orthoceras Ledeb. | 493 images |
| Barbarea stricta Andrz. ex Besser | 55 images |
| Barbarea verna (Mill.) Asch. | 1432 images |
| Barbarea vulgaris W.T.Aiton | 1019 images |
| Bartsia alpina L. | 1080 images |
| Bassia scoparia (L.) A.J.Scott | 398 images |
| Beckmannia syzigachne (Steud.) Fernald | 16 images |
| Bellis perennis L. | 14493 images |
| Berberis aquifolium Pursh | 16030 images |
| Berberis thunbergii DC. | 8614 images |
| Berberis vulgaris L. | 5057 images |
| Berteroa incana (L.) DC. | 4607 images |
| Berula erecta (Huds.) Coville | 772 images |
| Betula × caerulea Blanch. | 3 images |
| Betula alleghaniensis Britton | 237 images |
| Betula cordifolia Regel | 4 images |
| Betula glandulosa Michx. | 7 images |
| Betula lenta L. | 122 images |
| Betula occidentalis Hook. | 40 images |
| Betula papyrifera Marshall | 448 images |
| Betula pendula Roth | 10893 images |
| Betula populifolia Marshall | 60 images |
| Betula pubescens Ehrh. | 5175 images |
| Betula pumila L. | 8 images |
| Bidens alba (L.) DC. | 257 images |
| Bidens aristosa (Michx.) Britton | 132 images |
| Bidens bipinnata L. | 1249 images |
| Bidens cernua L. | 469 images |
| Bidens connata Muhl. ex Willd. | 59 images |
| Bidens frondosa L. | 2736 images |
| Bidens tripartita L. | 1092 images |
| Bidens vulgata Greene | 63 images |
| Bistorta officinalis Delarbre | 6301 images |
| Bistorta vivipara (L.) Delarbre | 1161 images |
| Blephilia hirsuta (Pursh) Benth. | 81 images |
| Blitum bonus-henricus (L.) Rchb. | 1419 images |
| Blitum capitatum L. | 200 images |
| Boechera drummondii (A.Gray) Á.Löve & D.Löve | 3 images |
| Boehmeria cylindrica (L.) Sw. | 563 images |
| Bolboschoenus fluviatilis (Torr.) Soják | 3 images |
| Bolboschoenus maritimus (L.) Palla | 711 images |
| Borago officinalis L. | 19003 images |
| Borodinia laevigata (Muhl. ex Willd.) P.J.Alexander & Windham | 4 images |
| Botrychium dissectum Spreng. | 150 images |
| Botrychium lanceolatum (S.G.Gmel.) Ångstr. | 5 images |
| Botrychium lunaria (L.) Sw. | 484 images |
| Botrychium multifidum (S.G.Gmel.) Rupr. | 2 images |
| Botrychium simplex E.Hitchc. | 48 images |
| Botrychium virginianum (L.) Sw. | 215 images |
| Bouteloua curtipendula (Michx.) Torr. | 114 images |
| Bouteloua gracilis (Kunth) Lag. ex Griffiths | 53 images |
| Brachypodium sylvaticum (Huds.) P.Beauv. | 1322 images |
| Brasenia schreberi J.F.Gmel. | 4 images |
| Brassica juncea (L.) Czern. | 1314 images |
| Brassica napus L. | 9410 images |
| Brassica oleracea L. | 8277 images |
| Brassica rapa L. | 3711 images |
| Briza maxima L. | 1821 images |
| Briza media L. | 901 images |
| Bromus arvensis L. | 139 images |
| Bromus carinatus Hook. & Arn. | 28 images |
| Bromus catharticus Vahl | 399 images |
| Bromus erectus Huds. | 964 images |
| Bromus hordeaceus L. | 2699 images |
| Bromus inermis Leyss. | 664 images |
| Bromus kalmii A.Gray | 1 images |
| Bromus latiglumis (Shear) Hitchc. | 2 images |
| Bromus pubescens Muhl. ex Willd. | 5 images |
| Bromus racemosus L. | 183 images |
| Bromus secalinus L. | 229 images |
| Bromus sitchensis Trin. | 7 images |
| Bromus squarrosus L. | 97 images |
| Bromus sterilis L. | 2631 images |
| Bromus tectorum L. | 389 images |
| Buddleja davidii Franch. | 16475 images |
| Buglossoides arvensis (L.) I.M.Johnst. | 1124 images |
| Bulbostylis capillaris (L.) Kunth ex C.B.Clarke | 2 images |
| Bunias orientalis L. | 2234 images |
| Bupleurum rotundifolium L. | 460 images |
| Cakile edentula (Bigelow) Hook. | 232 images |
| Calamagrostis arenaria (L.) Roth | 1585 images |
| Calamagrostis breviligulata (Fernald) Saarela | 49 images |
| Calamagrostis canadensis (Michx.) P.Beauv. | 3 images |
| Calamagrostis epigejos (L.) Roth | 2697 images |
| Calamagrostis purpurea (Trin.) Trin. | 22 images |
| Calamagrostis stricta (Timm) Koeler | 26 images |
| Calendula officinalis L. | 15077 images |
| Calla palustris L. | 1323 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 | 8529 images |
| Calopogon tuberosus (L.) Britton, Sterns & Poggenb. | 72 images |
| Caltha palustris L. | 10406 images |
| Calypso bulbosa (L.) Oakes | 426 images |
| Calystegia sepium (L.) R.Br. | 9350 images |
| Calystegia spithamaea (L.) Pursh | 18 images |
| Camassia scilloides (Raf.) Cory | 143 images |
| Camelina microcarpa Andrz. ex DC. | 99 images |
| Camelina sativa (L.) Crantz | 211 images |
| Campanula giesekiana Vest ex Schult. | 6 images |
| Campanula glomerata L. | 7118 images |
| Campanula medium L. | 2627 images |
| Campanula persicifolia L. | 8937 images |
| Campanula rapunculoides L. | 4756 images |
| Campanula trachelium L. | 9281 images |
| Campanulastrum americanum (L.) Small | 280 images |
| Cannabis sativa L. | 5314 images |
| Capnoides sempervirens (L.) Borkh. | 103 images |
| Capsella bursa-pastoris (L.) Medik. | 9730 images |
| Cardamine bellidifolia L. | 27 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 flexuosa With. | 5304 images |
| Cardamine hirsuta L. | 3987 images |
| Cardamine impatiens L. | 1648 images |
| Cardamine occulta Hornem. | 7 images |
| Cardamine parviflora L. | 1882 images |
| Cardamine pensylvanica Muhl. ex Willd. | 4 images |
| Cardamine polemonioides Rouy | 1 images |
| Cardamine pratensis L. | 16749 images |
| Carduus acanthoides L. | 3278 images |
| Carduus crispus L. | 667 images |
| Carduus nutans L. | 4382 images |
| Carex × abitibiana Lepage | 7 images |
| Carex × xanthocarpa Degl. | 4 images |
| Carex acutiformis Ehrh. | 1797 images |
| Carex aquatilis Wahlenb. | 19 images |
| Carex arcta Boott | 6 images |
| Carex atherodes Spreng. | 5 images |
| Carex atrofusca Schkuhr | 100 images |
| Carex aurea Nutt. | 14 images |
| Carex baileyi Britton | 1 images |
| Carex bicolor Bellardi ex All. | 60 images |
| Carex bigelowii Torr. ex Schwein. | 23 images |
| Carex blanda Dewey | 31 images |
| Carex bromoides Willd. | 4 images |
| Carex brunnescens (Pers.) Poir. | 41 images |
| Carex buxbaumii Wahlenb. | 71 images |
| Carex canescens L. | 124 images |
| Carex capillaris L. | 51 images |
| Carex capitata Sol. | 1 images |
| Carex careyana Torr. ex Dewey | 6 images |
| Carex cephalophora Muhl. ex Willd. | 18 images |
| Carex chordorrhiza L.f. | 38 images |
| Carex comosa Boott | 41 images |
| Carex crinita Lam. | 60 images |
| Carex crus-corvi Shuttlew. ex Kunze | 1 images |
| Carex cryptolepis Mack. | 8 images |
| Carex demissa Hornem. | 11 images |
| Carex deweyana Schwein. | 7 images |
| Carex diandra Schrank | 75 images |
| Carex disperma Dewey | 3 images |
| Carex disticha Huds. | 128 images |
| Carex divulsa Stokes | 639 images |
| Carex eburnea Boott | 25 images |
| Carex echinata Murray | 262 images |
| Carex emoryi Dewey | 8 images |
| Carex festucacea Willd. | 1 images |
| Carex flacca Schreb. | 1818 images |
| Carex flava L. | 271 images |
| Carex folliculata L. | 5 images |
| Carex formosa Dewey | 1 images |
| Carex frankii Kunth | 17 images |
| Carex garberi Fernald | 1 images |
| Carex glacialis Mack. | 53 images |
| Carex gracillima Schwein. | 22 images |
| Carex granularis Muhl. ex Willd. | 5 images |
| Carex grayi J.Carey | 257 images |
| Carex grisea Wahlenb. | 17 images |
| Carex heleonastes Ehrh. ex L.f. | 21 images |
| Carex hirsutella Mack. | 13 images |
| Carex hirta L. | 776 images |
| Carex hirtifolia Mack. | 9 images |
| Carex hitchcockiana Dewey | 1 images |
| Carex hostiana DC. | 74 images |
| Carex hyalinolepis Steud. | 5 images |
| Carex hystericina Muhl. ex Willd. | 30 images |
| Carex inops L.H.Bailey | 1 images |
| Carex intumescens Rudge | 109 images |
| Carex jamesii Schwein. | 8 images |
| Carex lachenalii Schkuhr | 46 images |
| Carex lacustris Willd. | 10 images |
| Carex laeviconica Dewey | 3 images |
| Carex laevivaginata (Kük.) Mack. | 1 images |
| Carex lasiocarpa Ehrh. | 51 images |
| Carex laxiflora Lam. | 7 images |
| Carex lenticularis Michx. | 5 images |
| Carex lepidocarpa Tausch | 81 images |
| Carex leporina L. | 250 images |
| Carex limosa L. | 113 images |
| Carex livida (Wahlenb.) Willd. | 6 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 magellanica Lam. | 67 images |
| Carex maritima Gunnerus | 32 images |
| Carex meadii Dewey | 6 images |
| Carex mesochorea Mack. | 2 images |
| Carex michauxiana Boeckeler | 3 images |
| Carex microglochin Wahlenb. | 77 images |
| Carex molesta Mack. | 3 images |
| Carex muehlenbergii Willd. | 3 images |
| Carex muskingumensis Schwein. | 114 images |
| Carex myosuroides Vill. | 41 images |
| Carex nigra (L.) Reichard | 477 images |
| Carex nigromarginata Schwein. | 3 images |
| Carex normalis Mack. | 13 images |
| Carex norvegica Retz. | 21 images |
| Carex obtusata Lilj. | 5 images |
| Carex oederi Retz. | 290 images |
| Carex oligosperma Michx. | 8 images |
| Carex pairae F.W.Schultz | 76 images |
| Carex paleacea Schreb. ex Wahlenb. | 8 images |
| Carex pallescens L. | 296 images |
| Carex panicea L. | 219 images |
| Carex pauciflora Lightf. | 87 images |
| Carex pedunculata Muhl. ex Willd. | 21 images |
| Carex pensylvanica Lam. | 89 images |
| Carex plantaginea Lam. | 165 images |
| Carex platyphylla J.Carey | 3 images |
| Carex prairea Dewey ex Alph.Wood | 2 images |
| Carex praticola Rydb. | 1 images |
| Carex pseudocyperus L. | 447 images |
| Carex radiata (Wahlenb.) Small | 36 images |
| Carex rariflora (Wahlenb.) Sm. | 2 images |
| Carex retrorsa Schwein. | 4 images |
| Carex rosea Willd. | 1 images |
| Carex rostrata Stokes | 319 images |
| Carex rupestris All. | 51 images |
| Carex sartwellii Dewey | 4 images |
| Carex saxatilis L. | 19 images |
| Carex scabrata Schwein. | 10 images |
| Carex scirpoidea Michx. | 2 images |
| Carex shortiana Dewey & Torr. | 2 images |
| Carex simpliciuscula Wahlenb. | 10 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 stricta Lam. | 46 images |
| Carex subspathacea Wormsk. ex Hornem. | 4 images |
| Carex supina Willd. ex Wahlenb. | 2 images |
| Carex swanii (Fernald) Mack. | 4 images |
| Carex sylvatica Huds. | 1316 images |
| Carex tenera Dewey | 8 images |
| Carex tenuiflora Wahlenb. | 2 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 vaginata Tausch | 62 images |
| Carex vesicaria L. | 285 images |
| Carex virescens Muhl. ex Willd. | 5 images |
| Carex vulpinoidea Michx. | 110 images |
| Carex woodii Dewey | 2 images |
| Carpinus caroliniana Walter | 369 images |
| Carum carvi L. | 1221 images |
| Carya cordiformis (Wangenh.) K.Koch | 80 images |
| Carya glabra (Mill.) Sweet | 1981 images |
| Carya laciniosa (F.Michx.) G.Don | 25 images |
| Carya ovata (Mill.) K.Koch | 333 images |
| Carya tomentosa (Lam.) Nutt. | 99 images |
| Cassiope hypnoides (L.) D.Don | 44 images |
| Cassiope tetragona (L.) D.Don | 6 images |
| Castanea dentata (Marshall) Borkh. | 685 images |
| Castilleja coccinea (L.) Spreng. | 104 images |
| Castilleja elegans Malte | 4 images |
| Castilleja miniata Douglas ex Benth. | 360 images |
| Castilleja septentrionalis Lindl. | 26 images |
| Catabrosa aquatica (L.) P.Beauv. | 71 images |
| Catalpa ovata G.Don | 1224 images |
| Caulophyllum thalictroides (L.) Michx. | 449 images |
| Ceanothus americanus L. | 648 images |
| Ceanothus herbaceus Raf. | 31 images |
| Celastrus orbiculatus Thunb. | 709 images |
| Celastrus scandens L. | 911 images |
| Celtis occidentalis L. | 3546 images |
| Celtis tenuifolia Nutt. | 37 images |
| Cenchrus longispinus (Hack.) Fernald | 80 images |
| Centaurea benedicta (L.) L. | 338 images |
| Centaurea calcitrapa L. | 1658 images |
| Centaurea cyanus L. | 15919 images |
| Centaurea diffusa Lam. | 192 images |
| Centaurea jacea L. | 13826 images |
| Centaurea macrocephala Muss.Puschk. ex Willd. | 440 images |
| Centaurea montana L. | 8918 images |
| Centaurea nigra L. | 7774 images |
| Centaurea nigrescens Willd. | 699 images |
| Centaurea scabiosa L. | 8047 images |
| Centaurea solstitialis L. | 1247 images |
| Centaurea stoebe L. | 751 images |
| Centaurium erythraea Rafn | 7176 images |
| Centaurium pulchellum (Sw.) Hayek ex Hand.-Mazz., Stadlm., Janch. & Faltis | 46 images |
| Cephalanthus occidentalis L. | 1231 images |
| Cephalaria gigantea (Ledeb.) Bobrov | 543 images |
| Cerastium alpinum L. | 1099 images |
| Cerastium arcticum Lange | 3 images |
| Cerastium arvense L. | 5013 images |
| Cerastium beeringianum Cham. & Schltdl. | 1 images |
| Cerastium glomeratum Thuill. | 4543 images |
| Cerastium holosteoides Fr. | 10 images |
| Cerastium nutans Raf. | 7 images |
| Cerastium pumilum Curtis | 409 images |
| Cerastium regelii Ostenf. | 1 images |
| Cerastium semidecandrum L. | 479 images |
| Cerastium tomentosum L. | 6197 images |
| Ceratophyllum demersum L. | 295 images |
| Cerinthe major L. | 2019 images |
| Chaenorhinum minus (L.) Lange | 643 images |
| Chaerophyllum procumbens (L.) Crantz | 15 images |
| Chaerophyllum temulum L. | 5234 images |
| Chamaedaphne calyculata (L.) Moench | 156 images |
| Chamaelirium luteum (L.) A.Gray | 45 images |
| Chamaerhodos erecta (L.) Bunge | 1 images |
| Chelidonium majus L. | 25450 images |
| Chelone glabra L. | 441 images |
| Chenopodiastrum murale (L.) S.Fuentes, Uotila & Borsch | 1382 images |
| Chenopodium album L. | 14588 images |
| Chenopodium berlandieri Moq. | 46 images |
| Chenopodium betaceum Andrz. | 5 images |
| Chenopodium ficifolium Sm. | 1325 images |
| Chenopodium opulifolium Schrad. ex W.D.J.Koch & Ziz | 6 images |
| Chenopodium pratericola Rydb. | 17 images |
| Chenopodium standleyanum Aellen | 3 images |
| Chimaphila maculata (L.) Pursh | 750 images |
| Chimaphila umbellata (L.) W.P.C.Barton | 120 images |
| Chondrilla juncea L. | 1900 images |
| Chrysanthemum arcticum L. | 6 images |
| Chrysosplenium americanum Schwein. ex Hook. | 24 images |
| Cichorium intybus L. | 19251 images |
| Cicuta bulbifera L. | 34 images |
| Cicuta maculata L. | 310 images |
| Cicuta virosa L. | 478 images |
| Cinna arundinacea L. | 15 images |
| Circaea alpina L. | 253 images |
| Circaea canadensis (L.) Hill | 20 images |
| Cirsium arvense (L.) Scop. | 15258 images |
| Cirsium discolor (Muhl. ex Willd.) Spreng. | 198 images |
| Cirsium flodmanii Arthur | 9 images |
| Cirsium muticum Michx. | 69 images |
| Cirsium palustre (L.) Scop. | 3914 images |
| Cirsium scariosum Nutt. | 7 images |
| Cirsium vulgare (Savi) Ten. | 19782 images |
| Cladium mariscoides (Muhl.) Torr. | 3 images |
| Clarkia amoena (Lehm.) A.Nelson & J.F.Macbr. | 1143 images |
| Claytonia caroliniana Michx. | 305 images |
| Claytonia virginica L. | 1204 images |
| Clematis occidentalis (Hornem.) DC. | 50 images |
| Clematis orientalis L. | 79 images |
| Clematis recta L. | 796 images |
| Clematis terniflora DC. | 893 images |
| Clematis virginiana L. | 812 images |
| Clematis vitalba L. | 18594 images |
| Clematis viticella L. | 5164 images |
| Cleome dodecandra L. | 139 images |
| Cleome houtteana Schltdl. | 2419 images |
| Cleomella serrulata (Pursh) Roalson & J.C.Hall | 71 images |
| Clethra alnifolia L. | 868 images |
| Clinopodium arkansanum (Nutt.) House | 1 images |
| Clinopodium glabellum (Michx.) Kuntze | 14 images |
| Clinopodium menthifolium (Host) Merino | 35 images |
| Clinopodium vulgare L. | 7334 images |
| Clintonia borealis (Aiton) Raf. | 685 images |
| Cochlearia groenlandica L. | 11 images |
| Collinsia parviflora Douglas ex Lindl. | 41 images |
| Collinsia verna Nutt. | 71 images |
| Collinsonia canadensis L. | 114 images |
| Collomia linearis Nutt. | 35 images |
| Comandra umbellata (L.) Nutt. | 87 images |
| Comarum palustre L. | 1003 images |
| Comastoma tenellum (Rottb.) Toyok. | 78 images |
| Commelina communis L. | 1985 images |
| Comptonia peregrina (L.) Coult. | 189 images |
| Conium maculatum L. | 7641 images |
| Conoclinium coelestinum DC. | 1122 images |
| Conopholis americana (L.) Wallr. | 315 images |
| Conringia orientalis (L.) C.Presl | 2 images |
| Convallaria majalis L. | 7171 images |
| Convolvulus arvensis L. | 16234 images |
| Coptis trifolia (L.) Salisb. | 249 images |
| Corallorhiza maculata Raf. | 311 images |
| Corallorhiza odontorhiza (Willd.) Nutt. | 1 images |
| Corallorhiza striata Lindl. | 132 images |
| Corallorhiza trifida Châtel. | 159 images |
| Coreopsis grandiflora Hogg ex Sweet | 2489 images |
| Coreopsis lanceolata L. | 2669 images |
| Coreopsis rosea Nutt. | 5 images |
| Coreopsis tinctoria Nutt. | 3047 images |
| Coreopsis tripteris L. | 160 images |
| Coreopsis verticillata L. | 1830 images |
| Coriandrum sativum L. | 3130 images |
| Corispermum americanum (Nutt.) Nutt. | 2 images |
| Corispermum pallasii Steven | 103 images |
| Cornus alternifolia L.f. | 267 images |
| Cornus canadensis L. | 1338 images |
| Cornus drummondii C.A.Mey. | 16 images |
| Cornus florida L. | 5606 images |
| Cornus racemosa Lam. | 442 images |
| Cornus rugosa Lam. | 173 images |
| Cornus sericea L. | 7027 images |
| Cornus suecica L. | 561 images |
| Coronilla varia L. | 8731 images |
| Corydalis aurea Willd. | 95 images |
| Corydalis flavula (Raf.) DC. | 96 images |
| Corylus americana Walter | 65 images |
| Corylus avellana L. | 20948 images |
| Corylus cornuta Marshall | 1154 images |
| Cosmos bipinnatus Cav. | 12884 images |
| Cota tinctoria (L.) J.Gay | 1831 images |
| Cotinus coggygria Scop. | 13022 images |
| Cotoneaster acutifolius Turcz. | 772 images |
| Cotoneaster divaricatus Rehder & E.H.Wilson | 510 images |
| Cotula coronopifolia L. | 486 images |
| Crassula aquatica (L.) Schönland | 7 images |
| Crataegus calpodendron (Ehrh.) Medik. | 10 images |
| Crataegus chrysocarpa Ashe | 6 images |
| Crataegus coccinea L. | 169 images |
| Crataegus coccinioides Ashe | 19 images |
| Crataegus crus-galli L. | 638 images |
| Crataegus douglasii Lindl. | 381 images |
| Crataegus flabellata (Bosc ex Spach) K.Koch | 1 images |
| Crataegus fluviatilis Sarg. | 2 images |
| Crataegus holmesiana Ashe | 25 images |
| Crataegus intricata Lange | 8 images |
| Crataegus irrasa Sarg. | 3 images |
| Crataegus macracantha Lodd. ex Loudon | 7 images |
| Crataegus macrosperma Ashe | 9 images |
| Crataegus magniflora Sarg. | 3 images |
| Crataegus mollis (Torr. & A.Gray) Scheele | 30 images |
| Crataegus monogyna Jacq. | 24928 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 submollis Sarg. | 192 images |
| Crataegus succulenta Schrad. ex Link | 14 images |
| Crepis biennis L. | 4354 images |
| Crepis capillaris (L.) Wallr. | 9044 images |
| Crepis pulchra L. | 824 images |
| Crepis tectorum L. | 249 images |
| Crocanthemum bicknellii (Fernald) Janch. | 3 images |
| Croton capitatus Michx. | 208 images |
| Cryptotaenia canadensis (L.) DC. | 233 images |
| Cucumis melo L. | 4734 images |
| Cucumis sativus L. | 4657 images |
| Cucurbita pepo L. | 5117 images |
| Cuphea viscosissima Jacq. | 47 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. | 1088 images |
| Cuscuta gronovii Willd. ex Schult. | 4 images |
| Cuscuta pentagona Engelm. | 12 images |
| Cuscuta polygonorum Engelm. | 2 images |
| Cyclachaena xanthiifolia (Nutt.) Fresen. | 96 images |
| Cydonia oblonga Mill. | 9942 images |
| Cymbalaria muralis G.Gaertn., B.Mey. & Scherb. | 1411 images |
| Cynanchum laeve (Michx.) Pers. | 178 images |
| Cynodon dactylon (L.) Pers. | 2433 images |
| Cynoglossum officinale L. | 3007 images |
| Cynosurus cristatus L. | 634 images |
| Cyperus bipartitus Torr. | 6 images |
| Cyperus esculentus L. | 801 images |
| Cyperus flavescens L. | 58 images |
| Cyperus fuscus L. | 313 images |
| Cyperus lupulinus (Biehler) Marcks | 2 images |
| Cyperus odoratus L. | 112 images |
| Cyperus squarrosus L. | 25 images |
| Cyperus strigosus L. | 280 images |
| Cyperus subsquarrosus (Muhl.) Bauters | 160 images |
| Cypripedium acaule Aiton | 832 images |
| Cypripedium candidum Muhl. ex Willd. | 44 images |
| Cypripedium parviflorum Salisb. | 297 images |
| Cypripedium passerinum Richardson | 14 images |
| Cypripedium reginae Walter | 195 images |
| Cystopteris bulbifera (L.) Bernh. | 89 images |
| Cystopteris fragilis (L.) Bernh. | 1041 images |
| Cystopteris montana (Lam.) Bernh. | 106 images |
| Cystopteris protrusa (Weath.) Blasdell | 40 images |
| Cystopteris tenuis (Michx.) Desv. | 3 images |
| Dactylis glomerata L. | 9498 images |
| Dactylorhiza maculata (L.) Soó | 6898 images |
| Dactylorhiza majalis (Rchb.) P.F.Hunt & Summerh. | 6151 images |
| Dactylorhiza viridis (L.) R.M.Bateman, Pridgeon & M.W.Chase | 729 images |
| Dalea candida Willd. | 9 images |
| Dalibarda repens L. | 24 images |
| Danthonia compressa Austin | 3 images |
| Danthonia decumbens (L.) DC. | 86 images |
| Danthonia intermedia Vasey | 2 images |
| Daphne mezereum L. | 4323 images |
| Dasiphora fruticosa (L.) Rydb. | 6042 images |
| Daucus carota L. | 24296 images |
| Decodon verticillatus (L.) Elliott | 48 images |
| Delphinium ajacis L. | 5640 images |
| Delphinium consolida L. | 2387 images |
| Dennstaedtia punctilobula (Michx.) T.Moore | 2 images |
| Deparia acrostichoides (Sw.) M.Kato | 48 images |
| Deschampsia cespitosa (L.) P.Beauv. | 424 images |
| Descurainia pinnata (Walter) Britton | 160 images |
| Descurainia sophia (L.) Webb ex Prantl | 738 images |
| Desmodium canadense (L.) DC. | 187 images |
| Desmodium illinoense A.Gray | 2 images |
| Dianthera americana L. | 178 images |
| Dianthus armeria L. | 2205 images |
| Dianthus barbatus L. | 10319 images |
| Dianthus deltoides L. | 3739 images |
| Dianthus plumarius L. | 1374 images |
| Diapensia lapponica L. | 33 images |
| Dicentra canadensis (Goldie) Walp. | 151 images |
| Dicentra cucullaria (L.) Bernh. | 642 images |
| Dichanthelium clandestinum (L.) Gould | 150 images |
| Dichanthelium latifolium (L.) Harvill | 2 images |
| Dichanthelium scribnerianum (Nash) J.R.Thomas | 2 images |
| Dichodon cerastoides (L.) Rchb. | 123 images |
| Dichondra carolinensis Michx. | 210 images |
| Diervilla lonicera Mill. | 547 images |
| Digitalis grandiflora Mill. | 2266 images |
| Digitalis lanata Ehrh. | 180 images |
| Digitalis lutea L. | 2812 images |
| Digitalis purpurea L. | 20242 images |
| Digitaria ischaemum (Schreb.) Muhl. | 48 images |
| Digitaria sanguinalis (L.) Scop. | 2150 images |
| Dioscorea villosa L. | 276 images |
| Diplachne fusca (L.) P.Beauv. ex Roem. & Schult. | 44 images |
| Diplotaxis erucoides (L.) DC. | 7138 images |
| Diplotaxis muralis (L.) DC. | 817 images |
| Diplotaxis tenuifolia (L.) DC. | 5547 images |
| Dipsacus fullonum L. | 12947 images |
| Dipsacus laciniatus L. | 837 images |
| Dirca palustris L. | 73 images |
| Distichlis spicata (L.) Greene | 90 images |
| Doellingeria umbellata (Mill.) Nees | 433 images |
| Doronicum caucasicum M.Bieb. | 681 images |
| Draba crassifolia Graham | 1 images |
| Draba fladnizensis Wulfen | 11 images |
| Draba glabella Pursh | 7 images |
| Draba incana L. | 27 images |
| Draba nemorosa L. | 83 images |
| Draba verna L. | 2693 images |
| Dracocephalum parviflorum Nutt. | 28 images |
| Drosera × obovata Mert. & W.D.J.Koch | 31 images |
| Drosera anglica Huds. | 276 images |
| Drosera filiformis Raf. | 70 images |
| Drosera intermedia Hayne | 407 images |
| Drosera linearis Goldie | 14 images |
| Drosera rotundifolia L. | 1434 images |
| Dryas drummondii Richardson ex Hook. | 34 images |
| Dryas integrifolia Vahl | 3 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 expansa (C.Presl) Fraser-Jenk. & Jermy | 101 images |
| Dryopteris filix-mas (L.) Schott | 6110 images |
| Dryopteris fragrans (L.) Schott | 31 images |
| Dryopteris goldieana (Hook. ex Goldie) A.Gray | 12 images |
| Dryopteris intermedia A.Gray | 11 images |
| Dryopteris marginalis (L.) A.Gray | 4 images |
| Dulichium arundinaceum (L.) Britton | 35 images |
| Dysphania ambrosioides (L.) Mosyakin & Clemants | 1225 images |
| Dysphania atriplicifolia (Spreng.) G.Kadereit, Sukhor. & Uotila | 59 images |
| Dysphania botrys (L.) Mosyakin & Clemants | 104 images |
| Dyssodia papposa (Vent.) Hitchc. | 23 images |
| Echinacea pallida (Nutt.) Nutt. | 659 images |
| Echinacea purpurea (L.) Moench | 6182 images |
| Echinochloa crus-galli (L.) P.Beauv. | 2490 images |
| Echinochloa frumentacea Link | 13 images |
| Echinochloa muricata (P.Beauv.) Fernald | 40 images |
| Echinochloa walteri (Pursh) A.Heller | 1 images |
| Echinocystis lobata (Michx.) Torr. & A.Gray | 718 images |
| Echinops exaltatus Schrad. | 224 images |
| Echinops sphaerocephalus L. | 2880 images |
| Echium plantagineum L. | 7154 images |
| Echium vulgare L. | 31062 images |
| Eclipta prostrata (L.) L. | 1260 images |
| Elaeagnus angustifolia L. | 4748 images |
| Elaeagnus commutata Bernh. ex Rydb. | 193 images |
| Elaeagnus umbellata Thunb. | 2459 images |
| Elatine triandra Schkuhr | 39 images |
| Eleocharis acicularis (L.) Roem. & Schult. | 51 images |
| Eleocharis compressa Sull. | 16 images |
| Eleocharis erythropoda Steud. | 5 images |
| Eleocharis flavescens (Poir.) Urb. | 8 images |
| Eleocharis macrostachya Britton | 11 images |
| Eleocharis obtusa (Willd.) Schult. | 31 images |
| Eleocharis ovata (Roth) Roem. & Schult. | 42 images |
| Eleocharis palustris (L.) Roem. & Schult. | 599 images |
| Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer | 40 images |
| Eleocharis quinqueflora (Hartmann) O.Schwarz | 50 images |
| Eleocharis uniglumis (Link) Schult. | 26 images |
| Eleusine indica (L.) Gaertn. | 828 images |
| Ellisia nyctelea (L.) L. | 51 images |
| Elodea canadensis Michx. | 217 images |
| Elodea nuttallii (Planch.) H.St.John | 71 images |
| Elsholtzia ciliata (Thunb.) Hyl. | 48 images |
| Elymus canadensis L. | 116 images |
| Elymus glaucus Buckley | 13 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. | 45 images |
| Empetrum nigrum L. | 1109 images |
| Enemion biternatum Raf. | 6 images |
| Epifagus virginiana (L.) Barton | 102 images |
| Epigaea repens L. | 166 images |
| Epilobium anagallidifolium Lam. | 182 images |
| Epilobium angustifolium L. | 16336 images |
| Epilobium brachycarpum C.Presl | 248 images |
| Epilobium ciliatum Raf. | 4005 images |
| Epilobium coloratum Biehler | 52 images |
| Epilobium hirsutum L. | 12262 images |
| Epilobium hornemannii Rchb. | 23 images |
| Epilobium lactiflorum Hausskn. | 18 images |
| Epilobium latifolium L. | 74 images |
| Epilobium leptophyllum Raf. | 8 images |
| Epilobium montanum L. | 2820 images |
| Epilobium palustre L. | 357 images |
| Epilobium parviflorum Schreb. | 3406 images |
| Epipactis helleborine (L.) Crantz | 5856 images |
| Equisetum × ferrissii Clute | 1 images |
| Equisetum × litorale Kühlew. ex Rupr. | 15 images |
| Equisetum arvense L. | 5991 images |
| Equisetum fluviatile L. | 758 images |
| Equisetum laevigatum A.Braun & Engelm. | 67 images |
| Equisetum palustre L. | 834 images |
| Equisetum pratense Ehrh. | 356 images |
| Equisetum scirpoides Michx. | 73 images |
| Equisetum sylvaticum L. | 2133 images |
| Equisetum variegatum Schleich. ex F.Weber & D.Mohr | 94 images |
| Eragrostis cilianensis (All.) Vignolo ex Janch. | 85 images |
| Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. | 5 images |
| Eragrostis mexicana (Hornem.) Link | 27 images |
| Eragrostis minor Host | 260 images |
| Eragrostis multicaulis Steud. | 6 images |
| Eragrostis pectinacea (Michx.) Nees | 27 images |
| Eragrostis pilosa (L.) P.Beauv. | 51 images |
| Eragrostis spectabilis (Pursh) Steud. | 163 images |
| Eranthis hyemalis (L.) Salisb. | 4140 images |
| Erechtites hieraciifolius (L.) Raf. ex DC. | 1471 images |
| Erica tetralix L. | 1073 images |
| Erigenia bulbosa (Michx.) Nutt. | 72 images |
| Erigeron annuus (L.) Desf | 199 images |
| Erigeron canadensis L. | 12936 images |
| Erigeron compositus Pursh | 34 images |
| Erigeron glabellus Nutt. | 108 images |
| Erigeron humilis Graham | 6 images |
| Erigeron lonchophyllus Hook. | 13 images |
| Erigeron philadelphicus L. | 2927 images |
| Erigeron pulchellus Michx. | 204 images |
| Erigeron strigosus Muhl. ex Willd. | 3914 images |
| Eriocaulon aquaticum (Hill) Druce | 25 images |
| Eriophorum angustifolium Honck. | 2174 images |
| Eriophorum scheuchzeri Hoppe | 879 images |
| Eriophorum vaginatum L. | 795 images |
| Eriophorum virginicum L. | 16 images |
| Eriophorum viridicarinatum (Engelm.) Fernald | 2 images |
| Erodium cicutarium (L.) L'Hér. | 12745 images |
| Erodium moschatum (L.) L'Hér. | 4472 images |
| Eruca vesicaria (L.) Cav. | 3911 images |
| Erucastrum gallicum (Willd.) O.E.Schulz | 296 images |
| Eryngium aquaticum L. | 16 images |
| Eryngium campestre L. | 5149 images |
| Eryngium maritimum L. | 3781 images |
| Eryngium planum L. | 1905 images |
| Erysimum × cheiri (L.) Crantz | 6260 images |
| Erysimum cheiranthoides L. | 1109 images |
| Erysimum repandum L. | 54 images |
| Erysimum virgatum Roth | 106 images |
| Erythranthe guttata (DC.) G.L.Nesom | 828 images |
| Erythranthe moschata (Douglas ex Lindl.) G.L.Nesom | 9 images |
| Erythronium albidum Nutt. | 206 images |
| Erythronium americanum Ker Gawl. | 1398 images |
| Euonymus alatus (Thunb.) Siebold | 2921 images |
| Euonymus atropurpureus Jacq. | 109 images |
| Euonymus europaeus L. | 18948 images |
| Euonymus fortunei (Turcz.) Hand.-Mazz. | 5966 images |
| Eupatorium altissimum L. | 113 images |
| Eupatorium perfoliatum L. | 861 images |
| Euphorbia corollata L. | 196 images |
| Euphorbia cyparissias L. | 15386 images |
| Euphorbia davidii Subils | 37 images |
| Euphorbia dentata Michx. | 17 images |
| Euphorbia exigua L. | 565 images |
| Euphorbia glyptosperma Engelm. | 36 images |
| Euphorbia helioscopia L. | 8600 images |
| Euphorbia lathyris L. | 8693 images |
| Euphorbia maculata L. | 726 images |
| Euphorbia marginata Pursh | 1353 images |
| Euphorbia nutans Lag. | 358 images |
| Euphorbia peplus L. | 6484 images |
| Euphorbia platyphyllos L. | 466 images |
| Euphorbia polygonifolia L. | 36 images |
| Euphorbia saratoi Ardoino | 1 images |
| Euphorbia serpens Kunth | 487 images |
| Euphorbia virgata Waldst. & Kit. | 15 images |
| Euphrasia frigida Pugsley | 3 images |
| Euphrasia micrantha Rchb. | 41 images |
| Euphrasia nemorosa (Pers.) Wallr. | 314 images |
| Euphrasia salisburgensis Funck ex Hoppe | 39 images |
| Euphrasia stricta J.P.Wolff ex J.F.Lehm. | 15 images |
| Euphrasia tetraquetra (Bréb.) Arrond. | 38 images |
| Eurybia divaricata (L.) G.L.Nesom | 392 images |
| Eurybia macrophylla (L.) Cass. | 1419 images |
| Eurybia radula (Aiton) G.L.Nesom | 2 images |
| Eurybia schreberi (Nees) Nees | 23 images |
| Euthamia graminifolia (L.) Nutt. | 660 images |
| Euthamia gymnospermoides Greene | 13 images |
| Eutrochium maculatum (L.) E.E.Lamont | 1226 images |
| Eutrochium purpureum (L.) E.E.Lamont | 236 images |
| Fagopyrum esculentum Moench | 5647 images |
| Fagopyrum tataricum (L.) Gaertn. | 180 images |
| Fagus grandifolia Ehrh. | 2303 images |
| Fallopia convolvulus (L.) Á.Löve | 1312 images |
| Fallopia dumetorum (L.) Holub | 932 images |
| Fallopia scandens (L.) Holub | 22 images |
| Festuca filiformis Pourr. | 141 images |
| Festuca myuros L. | 246 images |
| Festuca occidentalis Hook. | 7 images |
| Festuca octoflora Walter | 10 images |
| Festuca rubra L. | 316 images |
| Festuca trachyphylla (Hack.) Hack. | 14 images |
| Festuca viviparoidea Krajina ex Pavlick | 6 images |
| Filipendula ulmaria (L.) Maxim. | 11489 images |
| Filipendula vulgaris Moench | 3202 images |
| Fimbristylis autumnalis (L.) Roem. & Schult. | 287 images |
| Floerkea proserpinacoides Willd. | 45 images |
| Foeniculum vulgare Mill. | 10738 images |
| Fragaria vesca L. | 11252 images |
| Fragaria virginiana Mill. | 326 images |
| Frangula alnus Mill. | 5675 images |
| Frasera caroliniensis Walter | 52 images |
| Fraxinus excelsior L. | 23212 images |
| Fraxinus nigra Marshall | 25 images |
| Fraxinus pennsylvanica Marshall | 808 images |
| Froelichia gracilis (Hook.) Moq. | 33 images |
| Fuirena pumila (Torr.) Spreng. | 1 images |
| Fumaria officinalis L. | 7511 images |
| Galanthus nivalis L. | 5009 images |
| Galearis rotundifolia (Banks ex Pursh) R.M.Bateman | 4 images |
| Galearis spectabilis (L.) Raf. | 159 images |
| Galeopsis bifida Boenn. | 484 images |
| Galeopsis ladanum L. | 646 images |
| Galeopsis speciosa Mill. | 1252 images |
| Galeopsis tetrahit L. | 8640 images |
| Galinsoga parviflora Cav. | 3206 images |
| Galinsoga quadriradiata Ruiz & Pav. | 3843 images |
| Galium aparine L. | 12720 images |
| Galium asprellum Michx. | 15 images |
| Galium boreale L. | 917 images |
| Galium circaezans Michx. | 78 images |
| Galium kamtschaticum Steller ex Schult. & Schult.f. | 3 images |
| Galium labradoricum (Wiegand) Wiegand | 1 images |
| Galium mollugo L. | 9316 images |
| Galium obtusum Bigelow | 7 images |
| Galium palustre L. | 1534 images |
| Galium pilosum Aiton | 7 images |
| Galium saxatile L. | 1304 images |
| Galium spurium L. | 30 images |
| Galium tinctorium L. | 1 images |
| Galium trifidum L. | 36 images |
| Galium triflorum Michx. | 191 images |
| Galium verum L. | 9821 images |
| Gamochaeta purpurea (L.) Cabrera | 79 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 |
| Gentiana alba Muhl. ex J.McNab | 8 images |
| Gentiana andrewsii Griseb. | 141 images |
| Gentiana clausa Raf. | 33 images |
| Gentiana linearis Froel. | 72 images |
| Gentiana nivalis L. | 2256 images |
| Gentiana puberulenta J.S.Pringle | 2 images |
| Gentianella amarella (L.) Börner | 143 images |
| Gentianella quinquefolia (L.) Small | 19 images |
| Gentianopsis crinita (Froel.) Ma | 58 images |
| Gentianopsis detonsa (Rottb.) Ma | 5 images |
| Gentianopsis virgata (Raf.) Holub | 14 images |
| Geocaulon lividum (Richardson) Fernald | 2 images |
| Geranium bicknellii Britton | 30 images |
| Geranium carolinianum L. | 1264 images |
| Geranium columbinum L. | 1196 images |
| Geranium dissectum L. | 5779 images |
| Geranium ibericum Cav. | 475 images |
| Geranium maculatum L. | 1368 images |
| Geranium molle L. | 8644 images |
| Geranium pratense L. | 7686 images |
| Geranium pusillum L. | 8263 images |
| Geranium pyrenaicum Burm.f. | 7093 images |
| Geranium robertianum L. | 22267 images |
| Geranium sanguineum L. | 8817 images |
| Geranium sylvaticum L. | 8299 images |
| Geum aleppicum Jacq. | 241 images |
| Geum canadense Jacq. | 101 images |
| Geum laciniatum Murray | 475 images |
| Geum macrophyllum Willd. | 2944 images |
| Geum rivale L. | 3504 images |
| Geum triflorum Pursh | 95 images |
| Geum urbanum L. | 14115 images |
| Geum vernum (Raf.) Torr. & A.Gray | 2 images |
| Geum virginianum L. | 12 images |
| Gillenia trifoliata (L.) Moench | 101 images |
| Glaucium flavum Crantz | 5118 images |
| Glechoma hederacea L. | 25728 images |
| Glyceria canadensis (Michx.) Trin. | 11 images |
| Glyceria fluitans (L.) R.Br. | 149 images |
| Glyceria maxima (Hartm.) Holmb. | 367 images |
| Glyceria obtusa (Muhl.) Trin. | 1 images |
| Glyceria septentrionalis Hitchc. | 2 images |
| Glyceria striata (Lam.) Hitchc. | 33 images |
| Glycyrrhiza lepidota Pursh | 72 images |
| Gnaphalium uliginosum L. | 1063 images |
| Goodyera oblongifolia Raf. | 192 images |
| Goodyera pubescens (Willd.) R.Br. | 324 images |
| Goodyera repens (L.) R.Br. | 322 images |
| Goodyera tesselata G.Lodd. | 24 images |
| Gratiola lutea Raf. | 5 images |
| Gratiola neglecta Torr. | 18 images |
| Grindelia hirsutula Hook. & Arn. | 108 images |
| Grindelia squarrosa (Pursh) Dunal | 295 images |
| Guizotia abyssinica (L.f.) Cass. | 863 images |
| Gymnocarpium dryopteris (L.) Newman | 654 images |
| Gymnocarpium robertianum (Hoffm.) Newman | 260 images |
| Gymnocladus dioicus (L.) K.Koch | 461 images |
| Gypsophila acutifolia Steven ex Spreng. | 9 images |
| Gypsophila elegans M.Bieb. | 1124 images |
| Gypsophila paniculata L. | 1250 images |
| Gypsophila scorzonerifolia Ser. | 3 images |
| Gypsophila vaccaria (L.) Sm. | 1380 images |
| Hackelia deflexa (Wahlenb.) Opiz | 19 images |
| Hackelia floribunda (Lehm.) I.M.Johnst. | 19 images |
| Hackelia virginiana (L.) I.M.Johnst. | 131 images |
| Halerpestes cymbalaria (Pursh) Greene | 11 images |
| Hamamelis virginiana L. | 2855 images |
| Hammarbya paludosa (L.) Kuntze | 31 images |
| Hedeoma hispida Pursh | 2 images |
| Hedeoma pulegioides (L.) Pers. | 24 images |
| Hedlundia hybrida (L.) Sennikov & Kurtto | 35 images |
| Hedysarum alpinum L. | 8 images |
| Hedysarum boreale Nutt. | 8 images |
| Helenium autumnale L. | 1400 images |
| Helenium flexuosum Raf. | 65 images |
| Helianthus × laetiflorus Pers. | 1529 images |
| Helianthus annuus L. | 15271 images |
| Helianthus decapetalus L. | 281 images |
| Helianthus divaricatus L. | 892 images |
| Helianthus giganteus L. | 1001 images |
| Helianthus grosseserratus M.Martens | 49 images |
| Helianthus hirsutus Raf. | 78 images |
| Helianthus maximiliani Schrad. | 477 images |
| Helianthus mollis Buc'hoz | 89 images |
| Helianthus nuttallii Torr. & A.Gray | 12 images |
| Helianthus pauciflorus Nutt. | 173 images |
| Helianthus petiolaris Nutt. | 568 images |
| Helianthus strumosus L. | 74 images |
| Helianthus tuberosus L. | 7579 images |
| Heliopsis helianthoides (L.) Sweet | 2124 images |
| Helminthotheca echioides (L.) Holub | 7198 images |
| Hemerocallis fulva (L.) L. | 9888 images |
| Hemerocallis lilioasphodelus L. | 5253 images |
| Hemionitis atropurpurea (L.) Christenh. | 45 images |
| Hemionitis densa (Brack.) Christenh. | 58 images |
| Hemionitis glabella (Mett.) Christenh. | 11 images |
| Hepatica acutiloba DC. | 8 images |
| Hepatica americana (DC.) Ker Gawl. | 4 images |
| Heracleum mantegazzianum Sommier & Levier | 2657 images |
| Heracleum maximum W.Bartram | 681 images |
| Heracleum sibiricum L. | 2655 images |
| Heracleum sphondylium L. | 19951 images |
| Herniaria glabra L. | 631 images |
| Hesperis matronalis L. | 7530 images |
| Heteranthera dubia (Jacq.) MacMill. | 24 images |
| Heterotheca villosa (Pursh) Shinners | 154 images |
| Heuchera americana L. | 295 images |
| Heuchera richardsonii R.Br. | 48 images |
| Hibiscus laevis All. | 91 images |
| Hibiscus moscheutos L. | 4705 images |
| Hibiscus trionum L. | 1041 images |
| Hieracium albiflorum Hook. | 184 images |
| Hieracium lachenalii Suter | 472 images |
| Hieracium murorum L. | 3581 images |
| Hieracium paniculatum L. | 12 images |
| Hieracium sabaudum L. | 805 images |
| Hieracium scabrum Michx. | 13 images |
| Hieracium umbellatum L. | 1984 images |
| Hieracium venosum L. | 156 images |
| Hippophae rhamnoides L. | 3729 images |
| Hippuris vulgaris L. | 477 images |
| Holcus lanatus L. | 5426 images |
| Holcus mollis L. | 174 images |
| Holosteum umbellatum L. | 144 images |
| Homalosorus pycnocarpos (Spreng.) Pic.Serm. | 3 images |
| Honckenya peploides (L.) Ehrh. | 1210 images |
| Hordeum brachyantherum Nevski | 20 images |
| Hordeum jubatum L. | 479 images |
| Hordeum vulgare L. | 8499 images |
| Hornungia procumbens (L.) Hayek | 98 images |
| Houstonia caerulea L. | 504 images |
| Houstonia longifolia Gaertn. | 43 images |
| Hudsonia ericoides L. | 8 images |
| Hudsonia tomentosa Nutt. | 13 images |
| Humulus lupulus L. | 9502 images |
| Humulus scandens (Lour.) Merr. | 56 images |
| Huperzia saururus (Lam.) Trevis. | 10 images |
| Huperzia selago (L.) Bernh. ex Schrank & Mart. | 395 images |
| Hyacinthoides hispanica (Mill.) Rothm. | 4900 images |
| Hybanthus concolor (T.F.Forst.) Spreng. | 1 images |
| Hydrangea arborescens L. | 5034 images |
| Hydrangea paniculata Siebold | 6301 images |
| Hydrastis canadensis L. | 147 images |
| Hydrocharis morsus-ranae L. | 425 images |
| Hydrocotyle americana L. | 50 images |
| Hydrocotyle umbellata L. | 58 images |
| Hydrophyllum appendiculatum Michx. | 152 images |
| Hydrophyllum canadense L. | 16 images |
| Hydrophyllum virginianum L. | 768 images |
| Hylodesmum glutinosum (Muhl. ex Willd.) H.Ohashi & R.R.Mill | 74 images |
| Hylodesmum nudiflorum (L.) H.Ohashi & R.R.Mill | 5 images |
| Hylotelephium telephioides (Michx.) H.Ohba | 139 images |
| Hylotelephium telephium (L.) H.Ohba | 7873 images |
| Hymenophyllum peltatum (Poir.) Desv. | 7 images |
| Hypericum ascyron L. | 32 images |
| Hypericum canadense L. | 3 images |
| Hypericum ellipticum Hook. | 8 images |
| Hypericum fraseri (Spach) Steud. | 32 images |
| Hypericum gentianoides (L.) Britton, Sterns & Poggenb. | 19 images |
| Hypericum hirsutum L. | 1353 images |
| Hypericum kalmianum L. | 146 images |
| Hypericum maculatum Crantz | 3737 images |
| Hypericum majus (A.Gray) Britton | 6 images |
| Hypericum mutilum L. | 112 images |
| Hypericum perforatum L. | 16595 images |
| Hypericum prolificum L. | 189 images |
| Hypericum pulchrum L. | 665 images |
| Hypericum punctatum Lam. | 207 images |
| Hypericum sphaerocarpum Michx. | 8 images |
| Hypericum virginicum L. | 21 images |
| Hypochaeris radicata L. | 9569 images |
| Hypoxis hirsuta (L.) Coville | 284 images |
| Iberis amara L. | 1676 images |
| Iberis umbellata L. | 1440 images |
| Iberodes linifolia (L.) M.Serrano, R.Carbajal & S.Ortiz | 130 images |
| Ilex aquifolium L. | 15604 images |
| Ilex mucronata (L.) M.Powell, Savol. & S.Andrews | 92 images |
| Ilex verticillata (L.) A.Gray | 14 images |
| Impatiens capensis Meerb. | 2232 images |
| Impatiens glandulifera Royle | 13817 images |
| Impatiens pallida Nutt. | 951 images |
| Impatiens parviflora DC. | 6186 images |
| Inula helenium L. | 2507 images |
| Ionactis linariifolia (L.) Greene | 20 images |
| Ipomoea hederacea Jacq. | 501 images |
| Ipomoea purpurea (L.) Roth | 7515 images |
| Ipomoea quamoclit L. | 679 images |
| Ipomopsis rubra (L.) Wherry | 136 images |
| Iris brevicaulis Raf. | 16 images |
| Iris ensata Thunb. | 347 images |
| Iris lacustris Nutt. | 6 images |
| Iris pseudacorus L. | 9461 images |
| Iris pumila L. | 1506 images |
| Iris sibirica L. | 2214 images |
| Iris versicolor L. | 825 images |
| Iris virginica L. | 117 images |
| Isatis tinctoria L. | 3689 images |
| Isoetes lacustris L. | 26 images |
| Isotria medeoloides (Pursh) Raf. | 19 images |
| Iva frutescens L. | 64 images |
| Jacobaea pseudoarnica (Less.) Zuev | 10 images |
| Jacobaea vulgaris Gaertn. | 18526 images |
| Jeffersonia diphylla (L.) Pers. | 114 images |
| Juglans cinerea L. | 435 images |
| Juglans nigra L. | 7368 images |
| Juncus acutiflorus Ehrh. ex Hoffm. | 234 images |
| Juncus alpinoarticulatus Chaix | 133 images |
| Juncus arcticus Willd. | 42 images |
| Juncus articulatus L. | 675 images |
| Juncus balticus Willd. | 28 images |
| Juncus biglumis L. | 10 images |
| Juncus brachycarpus Engelm. | 1 images |
| Juncus brachycephalus (Engelm.) Buchenau | 3 images |
| Juncus bufonius L. | 385 images |
| Juncus bulbosus L. | 184 images |
| Juncus castaneus Sm. | 16 images |
| Juncus compressus Jacq. | 159 images |
| Juncus conglomeratus L. | 728 images |
| Juncus dudleyi Wiegand | 7 images |
| Juncus effusus L. | 3380 images |
| Juncus ensifolius Wikstr. | 87 images |
| Juncus filiformis L. | 100 images |
| Juncus gerardi Loisel. | 100 images |
| Juncus inflexus L. | 734 images |
| Juncus interior Wiegand | 3 images |
| Juncus marginatus Rostk. | 4 images |
| Juncus nodosus L. | 2 images |
| Juncus stygius L. | 10 images |
| Juncus tenuis Willd. | 525 images |
| Juncus torreyi Coville | 23 images |
| Juncus triglumis L. | 91 images |
| Juniperus communis L. | 8338 images |
| Juniperus horizontalis Moench | 1797 images |
| Juniperus virginiana L. | 4430 images |
| Kalmia angustifolia L. | 430 images |
| Kalmia microphylla (Hook.) A.Heller | 12 images |
| Kalmia polifolia Wangenh. | 113 images |
| Kalmia procumbens (L.) Gift, Kron & P.F.Stevens ex Galasso, Banfi & F.Conti | 403 images |
| Kerria japonica (L.) DC. | 7563 images |
| Kickxia elatine (L.) Dumort. | 308 images |
| Kickxia spuria (L.) Dumort. | 727 images |
| Knautia arvensis (L.) Coult. | 14968 images |
| Koeleria macrantha (Ledeb.) Schult. | 136 images |
| Koeleria spicata (L.) Barberá, Quintanar, Soreng & P.M.Peterson | 87 images |
| Koenigia islandica L. | 4 images |
| Koenigia polystachya (Wall. ex Meisn.) T.M.Schust. & Reveal | 242 images |
| Krigia biflora (Walter) S.F.Blake | 56 images |
| Laburnum × watereri (A.C.Rosenthal & Bermann) Dippel | 11 images |
| Lachnanthes caroliniana (Lam.) Dandy | 16 images |
| Lactuca biennis (Moench) Fernald | 128 images |
| Lactuca canadensis L. | 384 images |
| Lactuca floridana (L.) Gaertn. | 561 images |
| Lactuca hirsuta Muhl. ex Nutt. | 23 images |
| Lactuca muralis (L.) E.Mey. | 444 images |
| Lactuca saligna L. | 351 images |
| Lactuca sativa L. | 4746 images |
| Lactuca serriola L. | 12247 images |
| Lagurus ovatus L. | 3312 images |
| Lamium album L. | 7906 images |
| Lamium amplexicaule L. | 5128 images |
| Lamium hybridum Vill. | 7949 images |
| Lamium maculatum (L.) L. | 10760 images |
| Lamium purpureum L. | 16142 images |
| Laportea canadensis (L.) Wedd. | 256 images |
| Lappula squarrosa (Retz.) Dumort. | 210 images |
| Lapsana communis L. | 13370 images |
| Larix decidua Mill. | 6114 images |
| Larix kaempferi (Lamb.) Carrière | 400 images |
| Larix laricina (Du Roi) K.Koch | 213 images |
| Lathyrus japonicus Willd. | 580 images |
| Lathyrus latifolius L. | 9599 images |
| Lathyrus ochroleucus Hook. | 28 images |
| Lathyrus palustris L. | 200 images |
| Lathyrus pratensis L. | 4315 images |
| Lathyrus venosus Muhl. ex Willd. | 7 images |
| Lechea minor L. | 2 images |
| Lechea mucronata Raf. | 8 images |
| Leersia oryzoides (L.) Sw. | 245 images |
| Leersia virginica Willd. | 43 images |
| Lemna minor L. | 896 images |
| Lemna trisulca L. | 102 images |
| Lemna turionifera Landolt | 20 images |
| Leontodon hispidus L. | 3234 images |
| Leonurus cardiaca L. | 3295 images |
| Lepidium campestre (L.) W.T.Aiton | 8 images |
| Lepidium coronopus (L.) Al-Shehbaz | 140 images |
| Lepidium densiflorum Schrad. | 48 images |
| Lepidium didymum L. | 1434 images |
| Lepidium draba L. | 7926 images |
| Lepidium heterophyllum Benth. | 279 images |
| Lepidium latifolium L. | 767 images |
| Lepidium perfoliatum L. | 40 images |
| Lepidium ruderale L. | 231 images |
| Lepidium sativum L. | 822 images |
| Lepidium virginicum L. | 1657 images |
| Leucanthemella serotina (L.) Tzvelev | 121 images |
| Leucanthemum vulgare Lam. | 10457 images |
| Leucojum aestivum L. | 2179 images |
| Leucospora multifida (Michx.) Nutt. | 31 images |
| Leuzea repens (L.) D.J.N.Hind | 23 images |
| Levisticum officinale W.D.J.Koch | 1534 images |
| Leymus arenarius (L.) Hochst. | 1032 images |
| Leymus innovatus (Beal) Pilg. | 1 images |
| Leymus mollis (Trin.) Pilg. | 6 images |
| Liatris aspera Michx. | 212 images |
| Liatris cylindracea Michx. | 36 images |
| Liatris spicata (L.) Willd. | 2042 images |
| Ligusticum scothicum L. | 99 images |
| Lilium canadense L. | 155 images |
| Lilium lancifolium Thunb. | 1709 images |
| Lilium martagon L. | 7327 images |
| Lilium michiganense Farw. | 75 images |
| Lilium philadelphicum L. | 116 images |
| Limonium carolinianum (Walter) Britton | 63 images |
| Limosella aquatica L. | 56 images |
| Limosella australis R.Br. | 6 images |
| Linaria × sepium G.J.Allman | 25 images |
| Linaria bipartita (Vent.) Willd. | 1 images |
| Linaria dalmatica (L.) Mill. | 190 images |
| Linaria maroccana Hook.f. | 1609 images |
| Linaria repens (L.) Mill. | 3412 images |
| Linaria vulgaris Mill. | 16822 images |
| Lindera benzoin (L.) Blume | 840 images |
| Lindernia dubia (L.) Pennell | 215 images |
| Linnaea borealis L. | 613 images |
| Linum catharticum L. | 640 images |
| Linum lewisii Pursh | 172 images |
| Linum medium (Planch.) Britton | 20 images |
| Linum perenne L. | 2767 images |
| Linum sulcatum Riddell | 4 images |
| Linum usitatissimum L. | 5235 images |
| Linum virginianum L. | 1 images |
| Lipandra polysperma (L.) S.Fuentes, Uotila & Borsch | 1067 images |
| Liparis liliifolia (L.) Rich. ex Lindl. | 11 images |
| Liparis loeselii (L.) Rich. | 188 images |
| Liriodendron tulipifera L. | 9558 images |
| Lithospermum canescens (Michx.) Lehm. | 124 images |
| Lithospermum incisum Lehm. | 130 images |
| Lithospermum latifolium Michx. | 7 images |
| Lithospermum officinale L. | 1512 images |
| Lithospermum parviflorum Weakley, Witsell & D.Estes | 2 images |
| Lobelia × speciosa Sweet | 25 images |
| Lobelia cardinalis L. | 1821 images |
| Lobelia dortmanna L. | 150 images |
| Lobelia inflata L. | 472 images |
| Lobelia kalmii L. | 53 images |
| Lobelia siphilitica L. | 1127 images |
| Lobelia spicata Lam. | 120 images |
| Lobularia maritima (L.) Desv. | 12674 images |
| Lolium arundinaceum (Schreb.) Darbysh. | 726 images |
| Lolium giganteum (L.) Darbysh. | 161 images |
| Lolium multiflorum Lam. | 319 images |
| Lolium perenne L. | 2954 images |
| Lolium pratense (Huds.) Darbysh. | 673 images |
| Lolium remotum Schrank | 3 images |
| Lolium temulentum L. | 29 images |
| Lomatogonium rotatum (L.) Fr. | 1 images |
| Lonicera caerulea L. | 1634 images |
| Lonicera canadensis J.Bartram & W.Bartram ex Marshall | 118 images |
| Lonicera caprifolium L. | 2464 images |
| Lonicera chrysantha Turcz. ex Ledeb. | 4 images |
| Lonicera dioica L. | 101 images |
| Lonicera hirsuta Eaton | 20 images |
| Lonicera involucrata (Richardson) Banks ex Spreng. | 766 images |
| Lonicera japonica Thunb. | 9736 images |
| Lonicera maackii (Rupr.) Maxim. | 2050 images |
| Lonicera oblongifolia Hook. | 4 images |
| Lonicera periclymenum L. | 7073 images |
| Lonicera reticulata Raf. | 11 images |
| Lonicera sempervirens L. | 1396 images |
| Lonicera tatarica L. | 4899 images |
| Lonicera villosa (Michx.) Schult. | 3 images |
| Lonicera xylosteum L. | 9803 images |
| Lotus corniculatus L. | 18673 images |
| Ludwigia alternifolia L. | 206 images |
| Ludwigia palustris (L.) Elliott | 281 images |
| Lunaria annua L. | 20169 images |
| Lupinus nootkatensis Donn ex Sims | 144 images |
| Lupinus perennis L. | 566 images |
| Lupinus polyphyllus Lindl. | 8092 images |
| Luzula acuminata Raf. | 14 images |
| Luzula campestris (L.) DC. | 1901 images |
| Luzula luzuloides (Lam.) Dandy & Wilmott | 506 images |
| Luzula multiflora (Ehrh.) Lej. | 372 images |
| Luzula pallescens Sw. | 4 images |
| Luzula parviflora (Ehrh.) Desv. | 4 images |
| Luzula spicata (L.) DC. | 64 images |
| Lycium barbarum L. | 2722 images |
| Lycopodiella appressa (Chapm.) Cranfill | 3 images |
| Lycopodiella inundata (L.) Holub | 146 images |
| Lycopodium × zeilleri (Rouy) Greuter & Burdet | 59 images |
| Lycopodium alpinum L. | 182 images |
| Lycopodium annotinum L. | 916 images |
| Lycopodium clavatum L. | 692 images |
| Lycopodium complanatum L. | 214 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 asper Greene | 11 images |
| Lycopus europaeus L. | 5491 images |
| Lycopus uniflorus Michx. | 101 images |
| Lysimachia arvensis (L.) U.Manns & Anderb. | 9965 images |
| Lysimachia borealis (Raf.) U.Manns & Anderb. | 527 images |
| Lysimachia ciliata L. | 762 images |
| Lysimachia hybrida Michx. | 1 images |
| Lysimachia lanceolata Walter | 24 images |
| Lysimachia maritima (L.) Galasso, Banfi & Soldano | 362 images |
| Lysimachia minima (L.) U.Manns & Anderb. | 18 images |
| Lysimachia nummularia L. | 4015 images |
| Lysimachia punctata L. | 8289 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. | 8128 images |
| Lythrum alatum Pursh | 48 images |
| Lythrum hyssopifolia L. | 462 images |
| Lythrum salicaria L. | 23478 images |
| Macleaya cordata (Willd.) R.Br. | 856 images |
| Madia glomerata Hook. | 5 images |
| Magnolia acuminata (L.) L. | 809 images |
| Magnolia kobus DC. | 1597 images |
| Magnolia macrophylla Michx. | 461 images |
| Maianthemum canadense Desf. | 985 images |
| Maianthemum racemosum (L.) Link | 1439 images |
| Maianthemum stellatum (L.) Link | 536 images |
| Maianthemum trifolium (L.) Sloboda | 17 images |
| Malaxis monophyllos (L.) Sw. | 46 images |
| Malaxis unifolia Michx. | 17 images |
| Malus baccata (L.) Borkh. | 2268 images |
| Malus coronaria (L.) Mill. | 84 images |
| Malus domestica (Suckow) Borkh. | 6975 images |
| Malus prunifolia (Willd.) Borkh. | 207 images |
| Malus toringo (Siebold) de Vriese | 112 images |
| Malva alcea L. | 12025 images |
| Malva moschata L. | 4942 images |
| Malva neglecta Wallr. | 5208 images |
| Malva parviflora L. | 2673 images |
| Malva pusilla Sm. | 1319 images |
| Malva setigera K.F.Schimp. & Spenn. | 116 images |
| Malva sylvestris L. | 25631 images |
| Malva verticillata L. | 205 images |
| Marrubium vulgare L. | 4264 images |
| Marsilea quadrifolia L. | 281 images |
| Matricaria chamomilla L. | 9636 images |
| Matricaria discoidea DC. | 3408 images |
| Matthiola longipetala (Vent.) DC. | 508 images |
| Medeola virginiana L. | 310 images |
| Medicago lupulina L. | 6574 images |
| Medicago sativa L. | 15852 images |
| Melampyrum lineare Lam. | 147 images |
| Melanocalyx uniflora (L.) Morin | 2 images |
| Melica altissima L. | 40 images |
| Melilotus albus Medik. | 6714 images |
| Melilotus officinalis (L.) Lam. | 3703 images |
| Melissa officinalis L. | 13179 images |
| Menispermum canadense L. | 225 images |
| Mentha × dumetorum Schult. | 1 images |
| Mentha × gracilis Sole | 12 images |
| Mentha × piperita L. | 3116 images |
| Mentha × villosa Huds. | 320 images |
| Mentha arvensis L. | 2940 images |
| Mentha canadensis L. | 11 images |
| Mentha spicata L. | 8527 images |
| Menyanthes trifoliata L. | 1752 images |
| Mertensia maritima (L.) Gray | 344 images |
| Mertensia paniculata (Aiton) G.Don | 56 images |
| Mertensia virginica (L.) Pers. ex Link | 882 images |
| Micranthes nivalis (L.) Small | 2 images |
| Micranthes pensylvanica (L.) Haw. | 32 images |
| Micranthes stellaris (L.) Galasso, Banfi & Soldano | 627 images |
| Micranthes tenuis (Wahlenb.) Small | 2 images |
| Micranthes virginiensis (Michx.) Small | 100 images |
| Milium effusum L. | 323 images |
| Mimulus alatus Aiton | 108 images |
| Mimulus ringens L. | 435 images |
| Mirabilis albida (Walter) Heimerl | 45 images |
| Mirabilis nyctaginea (Michx.) MacMill. | 195 images |
| Miscanthus sacchariflorus (Maxim.) Benth. & Hook.f. ex Franch. | 42 images |
| Miscanthus sinensis Andersson | 3308 images |
| Misopates orontium (L.) Raf. | 1713 images |
| Mitchella repens L. | 891 images |
| Mitella diphylla L. | 125 images |
| Mitella nuda L. | 14 images |
| Moehringia lateriflora (L.) Fenzl | 42 images |
| Moehringia macrophylla (Hook.) Fenzl | 25 images |
| Molinia caerulea (L.) Moench | 1028 images |
| Mollugo verticillata L. | 317 images |
| Moluccella laevis L. | 268 images |
| Monarda didyma L. | 3008 images |
| Monarda fistulosa L. | 2131 images |
| Monarda media Willd. | 16 images |
| Moneses uniflora (L.) A.Gray | 306 images |
| Monotropa hypopitys L. | 1051 images |
| Monotropa uniflora L. | 1084 images |
| Montia fontana L. | 272 images |
| Morus alba L. | 11393 images |
| Morus rubra L. | 2578 images |
| Muhlenbergia frondosa (Poir.) Fernald | 8 images |
| Muhlenbergia glomerata (Willd.) Trin. | 1 images |
| Muhlenbergia mexicana (L.) Trin. | 5 images |
| Muhlenbergia schreberi J.F.Gmel. | 5 images |
| Muscari armeniacum H.J.Veitch | 26 images |
| Muscari botryoides (L.) Mill. | 5393 images |
| Myosotis arvensis (L.) Hill | 2812 images |
| Myosotis discolor Pers. | 808 images |
| Myosotis laxa Lehm. | 292 images |
| Myosotis macrosperma Engelm. | 87 images |
| Myosotis scorpioides L. | 5636 images |
| Myosotis stricta Link ex Roem. & Schult. | 635 images |
| Myosotis sylvatica Ehrh. ex Hoffm. | 421 images |
| Myosotis verna Nutt. | 12 images |
| Myrica gale L. | 648 images |
| Myrica pensylvanica Mirb. | 68 images |
| Myriophyllum alterniflorum DC. | 45 images |
| Myriophyllum heterophyllum Michx. | 9 images |
| Myriophyllum quitense Kunth | 12 images |
| Myriophyllum sibiricum Kom. | 7 images |
| Myriophyllum spicatum L. | 289 images |
| Myriophyllum verticillatum L. | 67 images |
| Myrrhis odorata (L.) Scop. | 1460 images |
| Nabalus albus (L.) Hook. | 150 images |
| Nabalus altissimus (L.) Hook. | 3 images |
| Najas gracillima (A.Braun ex Engelm.) Magnus | 1 images |
| Najas guadalupensis (Spreng.) Magnus | 14 images |
| Narcissus poeticus L. | 2877 images |
| Narcissus pseudonarcissus L. | 9421 images |
| Nardus stricta L. | 337 images |
| Nasturtium microphyllum (Boenn.) Rchb. | 61 images |
| Nasturtium officinale W.T.Aiton | 648 images |
| Nelumbo lutea (Willd.) Pers. | 5 images |
| Neottia auriculata (Wiegand) Szlach. | 1 images |
| Neottia bifolia (Raf.) Baumbach | 1 images |
| Neottia convallarioides (Sw.) Rich. | 4 images |
| Neottia cordata (L.) Rich. | 212 images |
| Neottia ovata (L.) Bluff & Fingerh. | 3186 images |
| Nepeta cataria L. | 3653 images |
| Neslia paniculata (L.) Desv. | 78 images |
| Nigella damascena L. | 12733 images |
| Nonea versicolor (Steven) Sweet | 1 images |
| Nuttallanthus canadensis (L.) D.A.Sutton | 15 images |
| Nymphaea odorata Aiton | 404 images |
| Nymphoides peltata (S.G.Gmel.) Kuntze | 441 images |
| Nyssa sylvatica Marshall | 968 images |
| Oclemena acuminata (Michx.) Greene | 312 images |
| Odontarrhena muralis (Waldst. & Kit.) Endl. | 125 images |
| Odontites vulgaris Moench | 9 images |
| Oenothera biennis L. | 14302 images |
| Oenothera filiformis (Small) W.L.Wagner & Hoch | 4 images |
| Oenothera gaura W.L.Wagner & Hoch | 1983 images |
| Oenothera glazioviana Micheli | 7362 images |
| Oenothera grandiflora L'Hér. | 1 images |
| Oenothera laciniata Hill | 553 images |
| Oenothera oakesiana (A.Gray) J.W.Robbins ex S.Watson | 6 images |
| Oenothera parviflora L. | 1250 images |
| Oenothera perennis L. | 8 images |
| Oenothera pilosella Raf. | 31 images |
| Oenothera suffrutescens (Moc. & Sessé ex Ser.) W.L.Wagner & Hoch | 84 images |
| Oenothera tetragona Roth | 10 images |
| Oenothera villosa Thunb. | 70 images |
| Omalotheca norvegica (Gunnerus) Sch.Bip. & F.W.Schultz | 215 images |
| Omalotheca supina (L.) DC. | 150 images |
| Omalotheca sylvatica (L.) Sch.Bip. & F.W.Schultz | 532 images |
| Omphalodes verna Moench | 1633 images |
| Onoclea sensibilis L. | 1565 images |
| Onopordum acanthium L. | 4870 images |
| Ophioglossum pusillum Raf. | 4 images |
| Oplopanax horridus (Sm.) Miq. | 237 images |
| Opuntia cespitosa Raf. | 1 images |
| Opuntia fragilis (Nutt.) Haw. | 164 images |
| Oreojuncus trifidus (L.) Záv.Drábk. & Kirschner | 190 images |
| Origanum vulgare L. | 19309 images |
| Ornithogalum nutans L. | 1263 images |
| Ornithogalum umbellatum L. | 8446 images |
| Orobanche fasciculata Nutt. | 136 images |
| Orobanche uniflora L. | 114 images |
| Orthilia secunda (L.) House | 466 images |
| Orthocarpus luteus Nutt. | 4 images |
| Osmorhiza berteroi DC. | 8 images |
| Osmorhiza claytonii (Michx.) C.B.Clarke | 25 images |
| Osmorhiza depauperata Phil. | 7 images |
| Osmorhiza longistylis (Torr.) DC. | 342 images |
| Osmunda claytoniana L. | 397 images |
| Osmunda spectabilis Willd. | 4 images |
| Osmundastrum cinnamomeum (L.) C.Presl | 154 images |
| Ostrya virginiana (Mill.) K.Koch | 323 images |
| Oxalis corniculata L. | 9039 images |
| Oxalis dillenii Jacq. | 2433 images |
| Oxalis montana Raf. | 56 images |
| Oxalis stricta L. | 2346 images |
| Oxybasis glauca (L.) S.Fuentes, Uotila & Borsch | 246 images |
| Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch | 641 images |
| Oxybasis urbica (L.) S.Fuentes, Uotila & Borsch | 44 images |
| Oxypolis rigidior (L.) Raf. | 22 images |
| Oxyria digyna (L.) Hill | 398 images |
| Oxytropis campestris (L.) DC. | 526 images |
| Oxytropis deflexa (Pall.) DC. | 14 images |
| Pachysandra terminalis Siebold & Zucc. | 1594 images |
| Packera aurea (L.) Á.Löve & D.Löve | 159 images |
| Palustricodon aparinoides (Pursh) Morin | 20 images |
| Panax quinquefolius L. | 96 images |
| Panax trifolius L. | 145 images |
| Panicum capillare L. | 663 images |
| Panicum dichotomiflorum Michx. | 79 images |
| Panicum miliaceum L. | 1212 images |
| Panicum virgatum L. | 933 images |
| Papaver croceum Ledeb. | 546 images |
| Papaver dubium L. | 3655 images |
| Papaver lapponicum (Tolm.) Nordh. | 5 images |
| Papaver orientale L. | 4323 images |
| Papaver rhoeas L. | 12044 images |
| Papaver somniferum L. | 10179 images |
| Parietaria pensylvanica Muhl. ex Willd. | 181 images |
| Parnassia glauca Raf. | 35 images |
| Parnassia palustris L. | 4235 images |
| Paronychia fastigiata (Raf.) Fernald | 7 images |
| Parthenocissus quinquefolia (L.) Planch. | 15663 images |
| Parthenocissus tricuspidata (Siebold & Zucc.) Planch. | 3862 images |
| Parthenocissus vitacea (Knerr) Hitchc. | 3 images |
| Paspalum setaceum Michx. | 13 images |
| Pastinaca sativa L. | 6278 images |
| Pedicularis canadensis L. | 199 images |
| Pedicularis flammea L. | 6 images |
| Pedicularis furbishiae S.Watson | 2 images |
| Pedicularis groenlandica Retz. | 127 images |
| Pedicularis lanceolata Michx. | 22 images |
| Pedicularis lapponica L. | 57 images |
| Pedicularis palustris L. | 495 images |
| Pedicularis sudetica Willd. | 6 images |
| Pedicularis sylvatica L. | 903 images |
| Peltandra virginica (L.) Schott | 145 images |
| Penstemon albidus Nutt. | 10 images |
| Penstemon calycosus Small | 28 images |
| Penstemon digitalis Nutt. ex Sims | 1113 images |
| Penstemon gracilis Nutt. | 19 images |
| Penstemon hirsutus (L.) Willd. | 140 images |
| Penstemon pallidus Small | 33 images |
| Pentanema britannica (L.) D.Gut.Larr., Santos-Vicente, Anderb., E.Rico & M.M.Mart.Ort. | 1042 images |
| Penthorum sedoides L. | 44 images |
| Perilla frutescens (L.) Britton | 2437 images |
| Persicaria amphibia (L.) Delarbre | 393 images |
| Persicaria careyi (Olney) Greene | 1 images |
| Persicaria hydropiper (L.) Delarbre | 650 images |
| Persicaria hydropiperoides (Michx.) Small | 18 images |
| Persicaria lapathifolia (L.) Delarbre | 3170 images |
| Persicaria longiseta (Bruijn) Kitag. | 7 images |
| Persicaria maculosa Gray | 9314 images |
| Persicaria minor (Huds.) Opiz | 304 images |
| Persicaria orientalis (L.) Spach | 2696 images |
| Persicaria pensylvanica (L.) M.Gómez | 50 images |
| Persicaria punctata (Elliott) Small | 77 images |
| Persicaria sagittata (L.) H.Gross | 19 images |
| Persicaria virginiana (L.) Gaertn. | 1013 images |
| Petasites frigidus (L.) Fr. | 233 images |
| Petrorhagia saxifraga (L.) Link | 1682 images |
| Petrosedum rupestre (L.) P.V.Heath | 5888 images |
| Petroselinum crispum (Mill.) Fuss | 2517 images |
| Peucedanum ostruthium (L.) W.D.J.Koch | 1073 images |
| Phacelia purshii Buckley | 111 images |
| Phacelia tanacetifolia Benth. | 15837 images |
| Phalaris arundinacea L. | 2793 images |
| Phalaris canariensis L. | 454 images |
| Phalaris minor Retz. | 172 images |
| Phedimus aizoon (L.) 't Hart | 1017 images |
| Phedimus hybridus (L.) 't Hart | 108 images |
| Phedimus spurius (M.Bieb.) 't Hart | 4105 images |
| Phegopteris connectilis (Michx.) Watt | 709 images |
| Phellodendron amurense Rupr. | 324 images |
| Philadelphus coronarius L. | 18979 images |
| Philadelphus inodorus L. | 170 images |
| Philadelphus pubescens Loisel. | 844 images |
| Phleum alpinum L. | 313 images |
| Phleum pratense L. | 2555 images |
| Phlox divaricata L. | 1017 images |
| Phlox drummondii Hook. | 1415 images |
| Phlox maculata L. | 1506 images |
| Phlox paniculata L. | 5996 images |
| Phlox pilosa L. | 175 images |
| Phlox stolonifera Sims | 54 images |
| Phlox subulata L. | 4975 images |
| Phragmites australis (Cav.) Trin. ex Steud. | 6451 images |
| Phryma leptostachya L. | 156 images |
| Phyla lanceolata (Michx.) Greene | 124 images |
| Phyllodoce caerulea (L.) Bab. | 163 images |
| Physalis heterophylla Nees | 124 images |
| Physalis longifolia Nutt. | 221 images |
| Physalis virginiana Mill. | 2 images |
| Physocarpus opulifolius (L.) Maxim. | 4514 images |
| Physostegia virginiana (L.) Benth. | 2009 images |
| Phytolacca americana L. | 18449 images |
| Picea abies (L.) H.Karst. | 9982 images |
| Picea laxa (Münchh.) Sarg. | 1766 images |
| Picea mariana (Mill.) Britton, Sterns & Poggenb. | 63 images |
| Picea rubens Sarg. | 1926 images |
| Picea sitchensis (Bong.) Carrière | 1046 images |
| Picris hieracioides L. | 4306 images |
| Pilea fontana (Lunell) Rydb. | 1 images |
| Pilea pumila A.Gray | 483 images |
| Pilosella aurantiaca (L.) F.W.Schultz & Sch.Bip. | 7848 images |
| Pilosella caespitosa (Dumort.) P.D.Sell & C.West | 252 images |
| Pilosella flagellaris (Willd.) Arv.-Touv. | 1 images |
| Pilosella floribunda (Wimm. & Grab.) Fr. | 2 images |
| Pilosella lactucella (Wallr.) P.D.Sell & C.West | 234 images |
| Pilosella officinarum Vaill. | 1998 images |
| Pilosella piloselloides (Vill.) Soják | 244 images |
| Pimpinella saxifraga L. | 1788 images |
| Pinguicula villosa L. | 3 images |
| Pinguicula vulgaris L. | 1182 images |
| Pinus banksiana Lamb. | 381 images |
| Pinus resinosa Aiton | 1371 images |
| Pinus rigida Mill. | 401 images |
| Pinus strobus L. | 4178 images |
| Pinus sylvestris L. | 10266 images |
| Plantago aristata Michx. | 25 images |
| Plantago cordata Lam. | 13 images |
| Plantago eriopoda Torr. | 12 images |
| Plantago indica L. | 234 images |
| Plantago lanceolata L. | 13714 images |
| Plantago major L. | 10005 images |
| Plantago maritima L. | 796 images |
| Plantago media L. | 4638 images |
| Plantago rugelii Decne. | 189 images |
| Plantago virginica L. | 179 images |
| Platanthera aquilonis Sheviak | 21 images |
| Platanthera blephariglottis (Willd.) Lindl. | 36 images |
| Platanthera ciliaris (L.) Lindl. | 79 images |
| Platanthera clavellata (Michx.) Luer | 43 images |
| Platanthera dilatata (Pursh) Lindl. ex L.C.Beck | 4 images |
| Platanthera flava (L.) Lindl. | 17 images |
| Platanthera grandiflora (Bigelow) Lindl. | 11 images |
| Platanthera hookeri (Torr.) Lindl. | 1 images |
| Platanthera lacera (Michx.) G.Don | 39 images |
| Platanthera leucophaea (Nutt.) Lindl. | 11 images |
| Platanthera obtusata (Banks ex Pursh) Lindl. | 12 images |
| Platanthera orbiculata (Pursh) Lindl. | 44 images |
| Platanthera psycodes (L.) Lindl. | 84 images |
| Platanus occidentalis L. | 7967 images |
| Pluchea odorata (L.) Cass. | 267 images |
| Poa alpina L. | 316 images |
| Poa annua L. | 2976 images |
| Poa arida Vasey | 2 images |
| Poa autumnalis Muhl. ex Elliott | 2 images |
| Poa chaixii Vill. | 103 images |
| Poa compressa L. | 110 images |
| Poa glauca Vahl | 40 images |
| Poa nemoralis L. | 393 images |
| Poa palustris L. | 125 images |
| Poa pratensis L. | 2838 images |
| Poa secunda J.Presl | 9 images |
| Poa trivialis L. | 1776 images |
| Podagrostis humilis (Vasey) Björkman | 1 images |
| Podophyllum peltatum L. | 1922 images |
| Podostemum ceratophyllum Michx. | 3 images |
| Pogonia ophioglossoides (L.) Ker Gawl. | 106 images |
| Polemonium caeruleum L. | 1312 images |
| Polemonium reptans L. | 424 images |
| Polemonium vanbruntiae Britton | 1 images |
| Polygala cruciata L. | 9 images |
| Polygala polygama Walter | 27 images |
| Polygala sanguinea L. | 60 images |
| Polygala senega L. | 27 images |
| Polygala verticillata L. | 5 images |
| Polygaloides paucifolia (Willd.) J.R.Abbott | 174 images |
| Polygonatum biflorum (Walter) Elliott | 695 images |
| Polygonatum multiflorum (L.) All. | 6290 images |
| Polygonatum pubescens (Willd.) Pursh | 158 images |
| Polygonum arenastrum Boreau | 174 images |
| Polygonum aviculare L. | 5023 images |
| Polygonum cilinode Michx. | 3 images |
| Polygonum douglasii Greene | 5 images |
| Polygonum raii Bab. | 83 images |
| Polymnia canadensis L. | 134 images |
| Polypodium virginianum L. | 280 images |
| Polypogon monspeliensis (L.) Desf. | 800 images |
| Polystichum acrostichoides (Michx.) Schott | 603 images |
| Polystichum braunii (Spenn.) Fée | 166 images |
| Polystichum lonchitis (L.) Roth | 610 images |
| Polystichum scopulinum (D.C.Eaton) Maxon | 9 images |
| Pontederia cordata L. | 1464 images |
| Pontederia crassipes Mart. | 1617 images |
| Populus alba L. | 11768 images |
| Populus balsamifera L. | 1545 images |
| Populus deltoides W.Bartram ex Marshall | 547 images |
| Populus grandidentata Michx. | 297 images |
| Populus heterophylla L. | 24 images |
| Populus tremuloides Michx. | 1350 images |
| Portulaca grandiflora Hook. | 7749 images |
| Portulaca oleracea L. | 12319 images |
| Potamogeton × nitens Weber | 2 images |
| Potamogeton alpinus Balb. | 23 images |
| Potamogeton amplifolius Tuck. | 7 images |
| Potamogeton berchtoldii Fieber | 24 images |
| Potamogeton crispus L. | 157 images |
| Potamogeton epihydrus Raf. | 4 images |
| Potamogeton foliosus Raf. | 5 images |
| Potamogeton friesii Rupr. | 8 images |
| Potamogeton gramineus L. | 39 images |
| Potamogeton natans L. | 543 images |
| Potamogeton nodosus Poir. | 307 images |
| Potamogeton obtusifolius Mert. & W.D.J.Koch | 13 images |
| Potamogeton perfoliatus L. | 149 images |
| Potamogeton polygonifolius Pourr. | 96 images |
| Potamogeton praelongus Wulfen | 22 images |
| Potamogeton pusillus L. | 42 images |
| Potentilla anglica Laichard. | 670 images |
| Potentilla argentea L. | 2453 images |
| Potentilla canadensis L. | 95 images |
| Potentilla crantzii (Crantz) Beck ex Fritsch | 773 images |
| Potentilla erecta (L.) Raeusch. | 4443 images |
| Potentilla gracilis Douglas ex Hook. | 181 images |
| Potentilla grandiflora L. | 346 images |
| Potentilla hippiana Lehm. | 10 images |
| Potentilla hyparctica Malte | 2 images |
| Potentilla inclinata Vill. | 46 images |
| Potentilla indica (Andrews) Th.Wolf | 5182 images |
| Potentilla intermedia L. | 100 images |
| Potentilla nivea L. | 26 images |
| Potentilla norvegica L. | 673 images |
| Potentilla pensylvanica L. | 16 images |
| Potentilla recta L. | 3227 images |
| Potentilla reptans L. | 10241 images |
| Potentilla simplex Michx. | 455 images |
| Potentilla sterilis (L.) Garcke | 1447 images |
| Potentilla supina L. | 185 images |
| Potentilla thuringiaca Bernh. ex Link | 29 images |
| Primula laurentiana Fernald | 32 images |
| Primula mistassinica Michx. | 4 images |
| Primula veris L. | 13759 images |
| Prosartes lanuginosa (Michx.) D.Don | 20 images |
| Prosartes trachycarpa S.Watson | 38 images |
| Proserpinaca palustris L. | 4 images |
| Proserpinaca pectinata Lam. | 2 images |
| Prunella vulgaris L. | 18738 images |
| Prunus americana Marshall | 61 images |
| Prunus avium (L.) L. | 20049 images |
| Prunus cerasifera Ehrh. | 21800 images |
| Prunus cerasus L. | 10296 images |
| Prunus domestica L. | 16961 images |
| Prunus glandulosa Thunb. | 292 images |
| Prunus mahaleb L. | 6677 images |
| Prunus nigra Aiton | 4 images |
| Prunus padus L. | 13694 images |
| Prunus pensylvanica L.f. | 399 images |
| Prunus persica (L.) Batsch | 10217 images |
| Prunus pumila L. | 22 images |
| Prunus serotina Ehrh. | 8277 images |
| Prunus spinosa L. | 31128 images |
| Prunus susquehanae Willd. | 6 images |
| Prunus tomentosa Thunb. | 361 images |
| Prunus virginiana L. | 2718 images |
| Psammophiliella muralis (L.) Ikonn. | 539 images |
| Pseudognaphalium obtusifolium (L.) Hilliard & B.L.Burtt | 68 images |
| Ptelea trifoliata L. | 427 images |
| Pterospora andromedea Nutt. | 257 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 |
| Pulmonaria officinalis L. | 3853 images |
| Pulmonaria saccharata Mill. | 2302 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. | 15409 images |
| Pyrola americana G.Don | 23 images |
| Pyrola asarifolia Michx. | 106 images |
| Pyrola chlorantha Sw. | 309 images |
| Pyrola elliptica Nutt. | 141 images |
| Pyrola minor L. | 594 images |
| Pyrus communis L. | 10358 images |
| Quercus alba L. | 701 images |
| Quercus bicolor Willd. | 605 images |
| Quercus ellipsoidalis E.J.Hill | 21 images |
| Quercus ilicifolia Wangenh. | 40 images |
| Quercus macrocarpa Michx. | 1270 images |
| Quercus muehlenbergii Engelm. | 53 images |
| Quercus palustris Münchh. | 3759 images |
| Quercus robur L. | 16944 images |
| Quercus rubra L. | 11296 images |
| Quercus shumardii Buckley | 64 images |
| Quercus velutina Lam. | 1114 images |
| Radiola linoides Roth | 132 images |
| Ranunculus abortivus L. | 493 images |
| Ranunculus acris L. | 11776 images |
| Ranunculus bulbosus L. | 5038 images |
| Ranunculus fascicularis Muhl. ex Bigelow | 66 images |
| Ranunculus ficaria L. | 30668 images |
| Ranunculus flabellaris Raf. | 11 images |
| Ranunculus flammula L. | 1778 images |
| Ranunculus gmelinii DC. | 4 images |
| Ranunculus hederaceus L. | 163 images |
| Ranunculus hispidus Michx. | 208 images |
| Ranunculus hyperboreus Rottb. | 14 images |
| Ranunculus macounii Britton | 11 images |
| Ranunculus minimus (L.) E.H.L.Krause | 168 images |
| Ranunculus pensylvanicus L.f. | 2 images |
| Ranunculus pygmaeus Wahlenb. | 16 images |
| Ranunculus recurvatus Poir. | 215 images |
| Ranunculus repens L. | 15091 images |
| Ranunculus reptans L. | 8 images |
| Ranunculus sceleratus L. | 1412 images |
| Ranunculus trichophyllus Chaix | 480 images |
| Raphanus raphanistrum L. | 13500 images |
| Rapistrum rugosum (L.) All. | 3012 images |
| Ratibida columnifera (Nutt.) Wooton & Standl. | 427 images |
| Ratibida pinnata (Vent.) Barnhart | 319 images |
| Reseda alba L. | 1980 images |
| Reseda lutea L. | 5935 images |
| Reseda luteola L. | 2988 images |
| Reynoutria × bohemica Chrtek & Chrtková | 101 images |
| Reynoutria japonica Houtt. | 10643 images |
| Reynoutria sachalinensis (F.Schmidt) Nakai | 2308 images |
| Rhamnus cathartica L. | 5232 images |
| Rhamphospermum arvense (L.) Andrz. ex Besser | 10213 images |
| Rhamphospermum nigrum (L.) Al-Shehbaz | 707 images |
| Rheum rhabarbarum L. | 590 images |
| Rhexia virginica L. | 114 images |
| Rhinanthus minor L. | 2697 images |
| Rhodiola rosea L. | 758 images |
| Rhododendron canadense (L.) Torr. | 109 images |
| Rhododendron groenlandicum (Oeder) Kron & Judd | 56 images |
| Rhododendron lapponicum (L.) Wahlenb. | 285 images |
| Rhododendron tomentosum Harmaja | 494 images |
| Rhodotypos scandens (Thunb.) Makino | 819 images |
| Rhus aromatica Aiton | 636 images |
| Rhus copallinum L. | 889 images |
| Rhus glabra L. | 1732 images |
| Rhus typhina L. | 10201 images |
| Rhynchospora alba (L.) Vahl | 181 images |
| Rhynchospora capitellata (Michx.) Vahl | 3 images |
| Rhynchospora fusca (L.) W.T.Aiton | 57 images |
| Ribes americanum Mill. | 108 images |
| Ribes aureum Pursh | 1678 images |
| Ribes cynosbati L. | 256 images |
| Ribes glandulosum Weber | 16 images |
| Ribes hirtellum Michx. | 5 images |
| Ribes hudsonianum Richardson | 5 images |
| Ribes lacustre (Pers.) Poir. | 84 images |
| Ribes missouriense Nutt. | 67 images |
| Ribes nigrum L. | 2842 images |
| Ribes oxyacanthoides L. | 2 images |
| Ribes rubrum L. | 5488 images |
| Ribes triste Pall. | 11 images |
| Ribes uva-crispa L. | 3202 images |
| Ripariosida hermaphrodita (L.) Weakley & D.B.Poind. | 55 images |
| Rorippa amphibia (L.) Besser | 1361 images |
| Rorippa aquatica (Eaton) E.J.Palmer & Steyerm. | 1 images |
| Rorippa palustris (L.) Besser | 969 images |
| Rorippa sylvestris (L.) Besser | 2138 images |
| Rosa acicularis Lindl. | 24 images |
| Rosa arkansana Porter | 92 images |
| Rosa blanda Aiton | 23 images |
| Rosa canina L. | 21336 images |
| Rosa carolina L. | 29 images |
| Rosa gallica L. | 10560 images |
| Rosa glauca Pourr. | 855 images |
| Rosa micrantha Borrer ex Sm. | 791 images |
| Rosa multiflora Thunb. | 5124 images |
| Rosa nitida Willd. | 1 images |
| Rosa palustris Marshall | 51 images |
| Rosa pendulina L. | 7347 images |
| Rosa rubiginosa L. | 3844 images |
| Rosa rugosa Thunb. | 9163 images |
| Rosa setigera Michx. | 272 images |
| Rosa spinosissima L. | 4205 images |
| Rosa tomentosa Sm. | 227 images |
| Rosa virginiana Mill. | 144 images |
| Rosa woodsii Lindl. | 840 images |
| Rotala ramosior (L.) Koehne | 9 images |
| Rubus × trux Ashe | 1 images |
| Rubus allegheniensis Porter | 67 images |
| Rubus arcticus L. | 86 images |
| Rubus caesius L. | 6710 images |
| Rubus canadensis L. | 187 images |
| Rubus chamaemorus L. | 325 images |
| Rubus flagellaris Willd. | 36 images |
| Rubus hispidus L. | 92 images |
| Rubus idaeus L. | 7145 images |
| Rubus illecebrosus Focke | 56 images |
| Rubus nemoralis P.J.Müll. | 999 images |
| Rubus occidentalis L. | 2985 images |
| Rubus odoratus L. | 1448 images |
| Rubus pensilvanicus Poir. | 42 images |
| Rubus pubescens Raf. | 111 images |
| Rubus setosus Bigelow | 4 images |
| Rudbeckia fulgida Aiton | 6928 images |
| Rudbeckia hirta L. | 4646 images |
| Rudbeckia laciniata L. | 2406 images |
| Rudbeckia triloba L. | 1061 images |
| Rumex × acutus L. | 1523 images |
| Rumex acetosa L. | 6575 images |
| Rumex acetosella L. | 5118 images |
| Rumex alpinus L. | 1489 images |
| Rumex altissimus Alph.Wood | 12 images |
| Rumex crispus L. | 9800 images |
| Rumex dentatus L. | 18 images |
| Rumex longifolius DC. | 1110 images |
| Rumex obtusifolius L. | 12726 images |
| Rumex occidentalis S.Watson | 4 images |
| Rumex patientia L. | 2941 images |
| Rumex pseudonatronatus (Borbás) Murb. | 5 images |
| Rumex sanguineus L. | 1413 images |
| Rumex stenophyllus Ledeb. | 1 images |
| Rumex thyrsiflorus Fingerh. | 263 images |
| Rumex verticillatus L. | 29 images |
| Ruppia maritima L. | 23 images |
| Ruta graveolens L. | 3217 images |
| Sabatia angularis (L.) Pursh | 160 images |
| Sabulina michauxii (Fenzl) Dillenb. & Kadereit | 6 images |
| Sabulina stricta (Sw.) Rchb. | 3 images |
| Sagina japonica (Sw.) Ohwi | 4 images |
| Sagina nodosa (L.) Fenzl | 119 images |
| Sagina procumbens L. | 938 images |
| Sagina saginoides (L.) H.Karst. | 72 images |
| Sagittaria graminea Michx. | 69 images |
| Sagittaria latifolia Willd. | 700 images |
| Sagittaria montevidensis Cham. & Schltdl. | 156 images |
| Sagittaria rigida Pursh | 8 images |
| Salicornia rubra A.Nelson | 14 images |
| Salicornia virginica L. | 10 images |
| Salix × fragilis L. | 113 images |
| Salix alba L. | 9974 images |
| Salix amygdaloides Andersson | 24 images |
| Salix arctica Pall. | 20 images |
| Salix atrocinerea Brot. | 3622 images |
| Salix bebbiana Sarg. | 29 images |
| Salix candida Flüggé ex Willd. | 4 images |
| Salix caprea L. | 12200 images |
| Salix cinerea L. | 5652 images |
| Salix daphnoides Vill. | 124 images |
| Salix discolor Muhl. | 456 images |
| Salix eleagnos Scop. | 2738 images |
| Salix eriocephala Michx. | 71 images |
| Salix euxina I.V.Belyaeva | 823 images |
| Salix glauca L. | 204 images |
| Salix herbacea L. | 317 images |
| Salix humilis Marshall | 14 images |
| Salix interior Rowlee | 5 images |
| Salix lucida Muhl. | 63 images |
| Salix myricoides Muhl. | 1 images |
| Salix myrsinifolia Salisb. | 717 images |
| Salix nigra Marshall | 115 images |
| Salix pentandra L. | 1053 images |
| Salix planifolia Pursh | 7 images |
| Salix purpurea L. | 3092 images |
| Salix pyrifolia Andersson | 2 images |
| Salix reticulata L. | 430 images |
| Salix sericea Marshall | 11 images |
| Salix triandra L. | 1844 images |
| Salix uva-ursi Pursh | 8 images |
| Salix vestita Pursh | 3 images |
| Salix viminalis L. | 1782 images |
| Salsola kali L. | 424 images |
| Salsola tragus L. | 50 images |
| Salvia × sylvestris L. | 1257 images |
| Salvia officinalis L. | 11232 images |
| Salvia pratensis L. | 15543 images |
| Salvia sclarea L. | 3640 images |
| Salvia verticillata L. | 1725 images |
| Sambucus canadensis L. | 4235 images |
| Sambucus ebulus L. | 8878 images |
| Sambucus nigra L. | 27911 images |
| Sambucus racemosa L. | 8487 images |
| Samolus parviflorus Raf. | 2 images |
| Sanguinaria canadensis L. | 1622 images |
| Sanguisorba canadensis L. | 151 images |
| Sanguisorba minor Scop. | 8551 images |
| Sanguisorba officinalis L. | 3183 images |
| Sanicula canadensis L. | 439 images |
| Sanicula marilandica L. | 22 images |
| Sanicula trifoliata E.P.Bicknell | 1 images |
| Saponaria officinalis L. | 15400 images |
| Sarracenia purpurea L. | 1216 images |
| Sassafras albidum (Nutt.) Nees | 1417 images |
| Saururus cernuus L. | 343 images |
| Saxifraga aizoides L. | 2030 images |
| Saxifraga cernua L. | 28 images |
| Saxifraga cespitosa L. | 84 images |
| Saxifraga hirculus L. | 114 images |
| Saxifraga oppositifolia L. | 1007 images |
| Saxifraga paniculata Mill. | 2459 images |
| Saxifraga rivularis L. | 14 images |
| Saxifraga tricuspidata Rottb. | 7 images |
| Scandix pecten-veneris L. | 2716 images |
| Scandosorbus intermedia (Ehrh.) Sennikov | 3721 images |
| Scheuchzeria palustris L. | 104 images |
| Schizachyrium scoparium (Michx.) Nash | 50 images |
| Schoenoplectiella mucronata (L.) J.Jung & H.K.Choi | 36 images |
| Schoenoplectiella purshiana (Fernald) Lye | 3 images |
| Schoenoplectus pungens (Vahl) Palla | 60 images |
| Schoenoplectus tabernaemontani (C.C.Gmel.) Palla | 82 images |
| Scilla siberica Andrews | 2361 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 |
| Scleranthus annuus L. | 279 images |
| Scleranthus perennis L. | 506 images |
| Sclerochloa dura (L.) P.Beauv. | 57 images |
| Scorzoneroides autumnalis (L.) Moench | 2030 images |
| Scrophularia lanceolata Pursh | 13 images |
| Scrophularia nodosa L. | 3864 images |
| Scutellaria galericulata L. | 1214 images |
| Scutellaria lateriflora L. | 84 images |
| Scutellaria nervosa Pursh | 1 images |
| Scutellaria parvula Michx. | 30 images |
| Secale cereale L. | 3345 images |
| Sedum acre L. | 7042 images |
| Sedum album L. | 9605 images |
| Sedum hispanicum L. | 1232 images |
| Sedum sarmentosum Bunge | 733 images |
| Sedum sexangulare L. | 1940 images |
| Sedum ternatum Michx. | 336 images |
| Sedum villosum L. | 175 images |
| Selaginella selaginoides (L.) P.Beauv. ex Schrank & Mart. | 140 images |
| Senecio eremophilus Richardson | 2 images |
| Senecio squalidus L. | 3170 images |
| Senecio sylvaticus L. | 1761 images |
| Senecio viscosus L. | 737 images |
| Senecio vulgaris L. | 9282 images |
| Setaria faberi R.A.W.Herrm. | 28 images |
| Setaria italica (L.) P.Beauv. | 1302 images |
| Setaria pumila (Poir.) Roem. & Schult. | 2514 images |
| Setaria verticillata (L.) P.Beauv. | 1206 images |
| Setaria viridis (L.) P.Beauv. | 149 images |
| Shepherdia canadensis (L.) Nutt. | 149 images |
| Sibbaldia procumbens L. | 173 images |
| Sibbaldia tridentata (Aiton) Paule & Soják | 28 images |
| Sicyos angulatus L. | 402 images |
| Sida spinosa L. | 151 images |
| Silene acaulis (L.) Jacq. | 2679 images |
| Silene antirrhina L. | 14 images |
| Silene chalcedonica (L.) E.H.L.Krause | 985 images |
| Silene coronaria (L.) Clairv. | 6177 images |
| Silene csereii Baumg. | 4 images |
| Silene dichotoma Ehrh. | 916 images |
| Silene dioica (L.) Clairv. | 17292 images |
| Silene flos-cuculi (L.) Greuter & Burdet | 7034 images |
| Silene gallica L. | 1715 images |
| Silene latifolia Poir. | 19252 images |
| Silene noctiflora L. | 1366 images |
| Silene uralensis (Rupr.) Bocquet | 14 images |
| Silene vulgaris (Moench) Garcke | 14417 images |
| Silphium integrifolium Michx. | 98 images |
| Silphium laciniatum L. | 231 images |
| Silphium perfoliatum L. | 1306 images |
| Silphium terebinthinaceum Jacq. | 200 images |
| Silybum marianum (L.) Gaertn. | 9064 images |
| Sinapis alba L. | 6152 images |
| Sisymbrium altissimum L. | 305 images |
| Sisymbrium loeselii L. | 1266 images |
| Sisymbrium officinale (L.) Scop. | 5673 images |
| Sisyrinchium albidum Raf. | 36 images |
| Sisyrinchium angustifolium Mill. | 892 images |
| Sisyrinchium montanum Greene | 157 images |
| Sisyrinchium mucronatum Michx. | 5 images |
| Sium suave Walter | 65 images |
| Smilax ecirrhata (Engelm. ex Kunth) S.Watson | 2 images |
| Smilax herbacea L. | 204 images |
| Smilax lasioneura Hook. | 13 images |
| Smilax rotundifolia L. | 814 images |
| Smilax tamnoides L. | 157 images |
| Solanum alatum Moench | 3 images |
| Solanum americanum Mill. | 5574 images |
| Solanum carolinense L. | 1469 images |
| Solanum dulcamara L. | 13425 images |
| Solanum lycopersicum L. | 15654 images |
| Solanum nigrum L. | 12753 images |
| Solanum sisymbriifolium Lam. | 971 images |
| Solanum triflorum Nutt. | 57 images |
| Solidago altissima L. | 466 images |
| Solidago arguta Aiton | 6 images |
| Solidago bicolor L. | 108 images |
| Solidago caesia L. | 403 images |
| Solidago canadensis L. | 13501 images |
| Solidago fistulosa Mill. | 9 images |
| Solidago flexicaulis L. | 340 images |
| Solidago gigantea Aiton | 5970 images |
| Solidago hispida Muhl. ex Willd. | 18 images |
| Solidago juncea Aiton | 426 images |
| Solidago latissimifolia Mill. | 2 images |
| Solidago macrophylla Banks ex Pursh | 5 images |
| Solidago missouriensis Nutt. | 23 images |
| Solidago multiradiata Aiton | 32 images |
| Solidago nemoralis Aiton | 157 images |
| Solidago ohioensis Riddell | 7 images |
| Solidago ptarmicoides (Torr. & A.Gray) B.Boivin | 13 images |
| Solidago puberula Nutt. | 20 images |
| Solidago rigida L. | 145 images |
| Solidago rugosa Mill. | 984 images |
| Solidago sempervirens L. | 55 images |
| Solidago simplex Kunth | 16 images |
| Solidago squarrosa Nutt. | 12 images |
| Solidago uliginosa Nutt. | 31 images |
| Solidago ulmifolia Muhl. ex Willd. | 63 images |
| Sonchus arvensis L. | 4868 images |
| Sonchus asper (L.) Hill | 13104 images |
| Sonchus oleraceus L. | 13169 images |
| Sonchus palustris L. | 250 images |
| Sorbaria sorbifolia (L.) A.Braun | 2751 images |
| Sorbus americana Marshall | 198 images |
| Sorbus aucuparia L. | 18437 images |
| Sorbus decora (Sarg.) C.K.Schneid. | 16 images |
| Sorbus scopulina Greene | 51 images |
| Sorghastrum nutans (L.) Nash | 170 images |
| Sorghum × drummondii (Nees ex Steud.) Millsp. & Chase | 3 images |
| Sorghum bicolor (L.) Moench | 2106 images |
| Sorghum halepense (L.) Pers. | 2781 images |
| Sparganium americanum Nutt. | 14 images |
| Sparganium androcladum (Engelm.) Morong | 3 images |
| Sparganium angustifolium Michx. | 262 images |
| Sparganium emersum Rehmann | 186 images |
| Sparganium eurycarpum Engelm. | 46 images |
| Sparganium natans L. | 50 images |
| Spergula arvensis L. | 1152 images |
| Spergularia marina (L.) Besser | 591 images |
| Spergularia media (L.) C.Presl | 313 images |
| Spergularia rubra (L.) J.Presl & C.Presl | 1391 images |
| Sphenopholis intermedia (Rydb.) Rydb. | 9 images |
| Sphenopholis obtusata (Michx.) Scribn. | 9 images |
| Spiraea alba Du Roi | 1927 images |
| Spiraea chamaedryfolia L. | 2307 images |
| Spiraea corymbosa Raf. | 2 images |
| Spiraea japonica L.f. | 10968 images |
| Spiraea prunifolia Siebold & Zucc. | 251 images |
| Spiraea salicifolia L. | 448 images |
| Spiraea thunbergii Siebold ex Blume | 2053 images |
| Spiraea tomentosa L. | 734 images |
| Spiranthes cernua (L.) Rich. | 159 images |
| Spiranthes lacera (Raf.) Raf. | 63 images |
| Spiranthes lucida (H.H.Eaton) Ames | 12 images |
| Spiranthes magnicamporum Sheviak | 26 images |
| Spiranthes ochroleuca (Rydb.) Rydb. | 6 images |
| Spiranthes ovalis Lindl. | 26 images |
| Spiranthes romanzoffiana Cham. | 90 images |
| Spiranthes vernalis Engelm. & A.Gray | 59 images |
| Spirodela polyrhiza (L.) Schleid. | 181 images |
| Sporobolus alterniflorus (Loisel.) P.M.Peterson & Saarela | 60 images |
| Sporobolus cryptandrus (Torr.) A.Gray | 9 images |
| Sporobolus heterolepis (A.Gray) A.Gray | 15 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 rigidus (Buckley) P.M.Peterson | 7 images |
| Sporobolus schoenoides (L.) P.M.Peterson | 88 images |
| Sporobolus vaginiflorus (Torr. ex A.Gray) Alph.Wood | 8 images |
| Stachys annua (L.) L. | 521 images |
| Stachys arvensis (L.) L. | 596 images |
| Stachys byzantina K.Koch | 7302 images |
| Stachys germanica L. | 1390 images |
| Stachys palustris L. | 4870 images |
| Stachys pilosa Nutt. | 16 images |
| Stachys sylvatica L. | 9432 images |
| Stachys tenuifolia Willd. | 10 images |
| Stellaria alsine Grimm | 233 images |
| Stellaria apetala Ucria | 193 images |
| Stellaria aquatica (L.) Scop. | 1477 images |
| Stellaria borealis Bigelow | 3 images |
| Stellaria crassifolia Ehrh. | 20 images |
| Stellaria graminea L. | 3903 images |
| Stellaria longifolia Muhl. ex Willd. | 9 images |
| Stellaria longipes Goldie | 20 images |
| Stellaria media (L.) Vill. | 12190 images |
| Stellaria palustris Ehrh. ex Hoffm. | 4451 images |
| Streptopus amplexifolius (L.) DC. | 541 images |
| Streptopus lanceolatus (Aiton) Reveal | 94 images |
| Stuckenia filiformis (Pers.) Börner | 4 images |
| Stuckenia pectinata (L.) Börner | 103 images |
| Stylophorum diphyllum (Michx.) Nutt. | 417 images |
| Suaeda maritima (L.) Dumort. | 845 images |
| Subularia aquatica L. | 26 images |
| Succisa pratensis Moench | 4153 images |
| Succisella inflexa (Kluk) Beck | 117 images |
| Symphoricarpos albus (L.) S.F.Blake | 9651 images |
| Symphoricarpos occidentalis (R.Br.) Hook. | 57 images |
| Symphoricarpos orbiculatus Moench | 3037 images |
| Symphyotrichum cordifolium (L.) G.L.Nesom | 733 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 | 5785 images |
| Symphyotrichum ontarionis (Wiegand) G.L.Nesom | 7 images |
| Symphyotrichum oolentangiense (Riddell) G.L.Nesom | 212 images |
| Symphyotrichum pilosum (Willd.) G.L.Nesom | 284 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 | 534 images |
| Symphytum asperum Lepech. | 2222 images |
| Symphytum officinale L. | 18808 images |
| Symplocarpus foetidus (L.) Salisb. ex W.P.C.Barton | 503 images |
| Syringa vulgaris L. | 19960 images |
| Taenidia integerrima (L.) Drude | 43 images |
| Tanacetum balsamita L. | 513 images |
| Tanacetum bipinnatum Sch.Bip. | 28 images |
| Tanacetum parthenium (L.) Sch.Bip. | 7849 images |
| Tanacetum vulgare L. | 16730 images |
| Taraxacum erythrospermum Andrz. ex Besser | 1082 images |
| Taraxacum palustre (Lyons) Symons | 274 images |
| Taraxacum sect. Taraxacum F.H.Wigg. | 14239 images |
| Taxus canadensis Marshall | 1074 images |
| Tetraneuris herbacea Greene | 9 images |
| Teucrium botrys L. | 345 images |
| Teucrium canadense L. | 559 images |
| Teucrium scorodonia L. | 7357 images |
| Thalictrum alpinum L. | 62 images |
| Thalictrum dasycarpum Fisch., C.A.Mey. & Avé-Lall. | 9 images |
| Thalictrum dioicum L. | 468 images |
| Thalictrum pubescens Pursh | 453 images |
| Thalictrum revolutum DC. | 20 images |
| Thaspium barbinode (Michx.) Nutt. | 33 images |
| Thaspium trifoliatum (L.) A.Gray | 22 images |
| Thelypteris noveboracensis (L.) Nieuwl. | 243 images |
| Thelypteris palustris Schott | 308 images |
| Thelypteris quelpartensis (Christ) Ching | 17 images |
| Thermopsis gracilis Howell | 13 images |
| Thinopyrum acutum (DC.) Banfi | 52 images |
| Thinopyrum elongatum (Host) D.R.Dewey | 21 images |
| Thladiantha dubia Bunge | 112 images |
| Thlaspi arvense L. | 2623 images |
| Thuja occidentalis L. | 6886 images |
| Thymelaea passerina (L.) Coss. & Germ. | 62 images |
| Thymus pulegioides L. | 2125 images |
| Tiarella stolonifera G.L.Nesom | 2 images |
| Tilia americana L. | 4335 images |
| Tofieldia pusilla (Michx.) Pers. | 87 images |
| Torilis japonica (Houtt.) DC. | 1412 images |
| Torilis nodosa (L.) Gaertn. | 853 images |
| Torreyochloa pallida (Torr.) Church | 10 images |
| Toxicodendron radicans (L.) Kuntze | 4735 images |
| Toxicodendron rydbergii (Small ex Rydb.) Greene | 119 images |
| Toxicodendron vernix (L.) Kuntze | 67 images |
| Tradescantia ohiensis Raf. | 809 images |
| Tradescantia virginiana L. | 4754 images |
| Tragopogon × mirabilis Rouy | 1 images |
| Tragopogon dubius Scop. | 5621 images |
| Tragopogon porrifolius L. | 4758 images |
| Tragopogon pratensis L. | 7942 images |
| Trapa natans L. | 315 images |
| Triantha glutinosa (Michx.) Baker | 39 images |
| Tribulus terrestris L. | 2111 images |
| Trichophorum alpinum (L.) Pers. | 121 images |
| Trichophorum cespitosum (L.) Hartm. | 350 images |
| Trichophorum pumilum (Vahl) Schinz & Thell. | 19 images |
| Trichostema brachiatum L. | 24 images |
| Trichostema dichotomum L. | 125 images |
| Tridens flavus (L.) Hitchc. | 62 images |
| Trifolium arvense L. | 3259 images |
| Trifolium aureum Pollich | 796 images |
| Trifolium campestre Schreb. | 3753 images |
| Trifolium dubium Sibth. | 3059 images |
| Trifolium hybridum L. | 1431 images |
| Trifolium pratense L. | 17424 images |
| Trifolium repens L. | 11971 images |
| Triglochin maritima L. | 359 images |
| Triglochin palustris L. | 141 images |
| Trillium cernuum L. | 72 images |
| Trillium erectum L. | 1028 images |
| Trillium flexipes Raf. | 69 images |
| Trillium grandiflorum (Michx.) Salisb. | 958 images |
| Trillium undulatum Willd. | 256 images |
| Triodanis perfoliata (L.) Nieuwl. | 563 images |
| Triosteum angustifolium L. | 9 images |
| Triosteum aurantiacum E.P.Bicknell | 6 images |
| Triosteum perfoliatum L. | 50 images |
| Triphora trianthophoros (Sw.) Rydb. | 9 images |
| Triplasis purpurea (Walter) Chapm. | 3 images |
| Tripleurospermum inodorum (L.) Sch.Bip. | 1396 images |
| Tripleurospermum maritimum (L.) W.D.J.Koch | 703 images |
| Trisetum flavescens (L.) P.Beauv. | 548 images |
| Triticum aestivum L. | 21279 images |
| Triticum turgidum L. | 1406 images |
| Tsuga canadensis (L.) Carrière | 1292 images |
| Turritis glabra L. | 842 images |
| Tussilago farfara L. | 11683 images |
| Typha × glauca Godr. | 49 images |
| Typha angustifolia L. | 999 images |
| Typha latifolia L. | 3339 images |
| Ulmus americana L. | 4325 images |
| Ulmus glabra Huds. | 7357 images |
| Ulmus minor Mill. | 14425 images |
| Ulmus pumila L. | 2840 images |
| Ulmus rubra Muhl. | 134 images |
| Ulmus thomasii Sarg. | 160 images |
| Urtica dioica L. | 14231 images |
| Urtica gracilis Aiton | 1 images |
| Urtica urens L. | 4169 images |
| Utricularia geminiscapa Benj. | 10 images |
| Utricularia gibba L. | 43 images |
| Utricularia intermedia Hayne | 80 images |
| Utricularia minor L. | 130 images |
| Utricularia ochroleuca R.W.Hartm. | 13 images |
| Utricularia purpurea Walter | 12 images |
| Utricularia radiata Small | 12 images |
| Utricularia stygia G.Thor | 10 images |
| Utricularia subulata L. | 33 images |
| Uvularia grandiflora Sm. | 253 images |
| Uvularia perfoliata L. | 72 images |
| Uvularia sessilifolia L. | 128 images |
| Vaccinium angustifolium Aiton | 648 images |
| Vaccinium cespitosum Michx. | 3 images |
| Vaccinium corymbosum L. | 2406 images |
| Vaccinium macrocarpon Aiton | 313 images |
| Vaccinium membranaceum Douglas ex Torr. | 61 images |
| Vaccinium myrtilloides Michx. | 41 images |
| Vaccinium ovalifolium Sm. | 40 images |
| Vaccinium oxycoccos L. | 446 images |
| Vaccinium pallidum Aiton | 150 images |
| Vaccinium stamineum L. | 163 images |
| Vaccinium uliginosum L. | 1465 images |
| Vaccinium vitis-idaea L. | 2666 images |
| Valeriana dioica L. | 3006 images |
| Valeriana locusta L. | 6297 images |
| Valeriana officinalis L. | 7682 images |
| Valeriana umbilicata (Sull.) Christenh. & Byng | 13 images |
| Vallisneria americana Michx. | 8 images |
| Veratrum viride Aiton | 607 images |
| Verbascum blattaria L. | 3174 images |
| Verbascum lychnitis L. | 3421 images |
| Verbascum nigrum L. | 8925 images |
| Verbascum phlomoides L. | 2837 images |
| Verbascum thapsus L. | 16222 images |
| Verbascum virgatum Stokes | 1395 images |
| Verbena bracteata Cav. ex Lag. & Rodr. | 36 images |
| Verbena hastata L. | 1020 images |
| Verbena incompta P.W.Michael | 5 images |
| Verbena simplex Lehm. | 67 images |
| Verbena stricta Vent. | 314 images |
| Verbena urticifolia L. | 751 images |
| Verbesina alternifolia (L.) Britton ex Kearney | 562 images |
| Vernonia gigantea (Walter) Trel. | 13 images |
| Veronica agrestis L. | 1447 images |
| Veronica alpina L. | 304 images |
| Veronica anagallis-aquatica L. | 1518 images |
| Veronica arvensis L. | 3063 images |
| Veronica beccabunga L. | 2515 images |
| Veronica catenata Pennell | 108 images |
| Veronica chamaedrys L. | 18024 images |
| Veronica filiformis Sm. | 3039 images |
| Veronica hederifolia L. | 3167 images |
| Veronica longifolia L. | 1588 images |
| Veronica officinalis L. | 3094 images |
| Veronica peregrina L. | 320 images |
| Veronica persica Poir. | 14293 images |
| Veronica polita Fr. | 2328 images |
| Veronica scutellata L. | 270 images |
| Veronica serpyllifolia L. | 3402 images |
| Veronica spicata L. | 3529 images |
| Veronica teucrium L. | 700 images |
| Veronica verna L. | 173 images |
| Veronica wormskjoldii Roem. & Schult. | 5 images |
| Veronicastrum virginicum (L.) Farw. | 1085 images |
| Viburnum acerifolium L. | 631 images |
| Viburnum cassinoides L. | 7 images |
| Viburnum edule (Michx.) Raf. | 20 images |
| Viburnum lantana L. | 13797 images |
| Viburnum lantanoides Michx. | 637 images |
| Viburnum lentago L. | 267 images |
| Viburnum opulus L. | 19319 images |
| Viburnum rafinesqueanum Schult. | 3 images |
| Viburnum recognitum Fernald | 60 images |
| Viburnum trilobum Marshall | 1473 images |
| Vicia americana Muhl. ex Willd. | 71 images |
| Vicia caroliniana Walter | 49 images |
| Vicia cracca L. | 6956 images |
| Vicia sativa L. | 13561 images |
| Vicia sepium L. | 6221 images |
| Vicia tetrasperma (L.) Schreb. | 525 images |
| Vincetoxicum hirundinaria Medik. | 4564 images |
| Vincetoxicum nigrum (L.) Moench | 505 images |
| Vincetoxicum rossicum (Kleopow) Barbar. | 6 images |
| Viola × melissifolia Greene | 490 images |
| Viola adunca Sm. | 185 images |
| Viola arvensis Murray | 4952 images |
| Viola blanda Willd. | 263 images |
| Viola canadensis L. | 223 images |
| Viola cucullata Aiton | 27 images |
| Viola labradorica Schrank | 217 images |
| Viola lanceolata L. | 56 images |
| Viola macloskeyi F.E.Lloyd | 10 images |
| Viola nephrophylla Greene | 1 images |
| Viola odorata L. | 14662 images |
| Viola palmata L. | 19 images |
| Viola palustris L. | 998 images |
| Viola pedata L. | 166 images |
| Viola pedatifida G.Don | 17 images |
| Viola pubescens Aiton | 767 images |
| Viola renifolia A.Gray | 6 images |
| Viola rostrata Muhl. ex Pursh | 84 images |
| Viola rotundifolia Michx. | 45 images |
| Viola sagittata Aiton | 103 images |
| Viola selkirkii Pursh ex Goldie | 9 images |
| Viola sororia Willd. | 1617 images |
| Viola striata Aiton | 262 images |
| Viola tricolor L. | 7920 images |
| Viscaria alpina (L.) G.Don | 259 images |
| Vitis aestivalis Michx. | 1308 images |
| Vitis labrusca L. | 493 images |
| Vitis riparia Michx. | 699 images |
| Vitis vulpina L. | 977 images |
| Waldsteinia fragarioides (Michx.) Tratt. | 34 images |
| Wolffia brasiliensis Wedd. | 270 images |
| Wolffia columbiana H.Karst. | 1 images |
| Woodsia alpina (Bolton) Gray | 61 images |
| Woodsia ilvensis (L.) R.Br. | 93 images |
| Woodsia obtusa (Spreng.) Torr. | 12 images |
| Woodsia oregana D.C.Eaton | 14 images |
| Woodsia scopulina D.C.Eaton | 9 images |
| Woodwardia virginica (L.) Sm. | 18 images |
| Xanthium chinense Mill. | 1 images |
| Xanthium orientale L. | 453 images |
| Xanthium spinosum L. | 963 images |
| Xyris difformis Chapm. | 2 images |
| Xyris montana Ries | 3 images |
| Yucca flaccida Haw. | 232 images |
| Zannichellia palustris L. | 59 images |
| Zanthoxylum americanum Mill. | 216 images |
| Zea mays L. | 23885 images |
| Zizania aquatica L. | 12 images |
| Zizia aptera (A.Gray) Fernald | 217 images |
| Zizia aurea (L.) W.D.J.Koch | 56 images |
| Zostera marina L. | 126 images |
| Zoysia japonica Steud. | 9 images |