Subarctic America
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Subarctic America
Plants of Subarctic America
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Families
Genera
Species
1,154
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Abies lasiocarpa
(Hook.) Nutt.
LC
Least Concern
Alpine fir
164
125
Observations
Pinaceae
Acer circinatum
Pursh
LC
Least Concern
Vine maple
366
307
Observations
Sapindaceae
Acer glabrum
Torr.
LC
Least Concern
Rocky Mountain maple
139
122
Observations
Sapindaceae
Acer macrophyllum
Pursh
LC
Least Concern
Bigleaf maple
1,071
909
Observations
Sapindaceae
Acer negundo
L.
LC
Least Concern
Boxelder
15,783
11,809
Observations
Sapindaceae
Achillea alpina
L.
Chinese yarrow
18
12
Observations
Asteraceae
Achillea millefolium
L.
LC
Least Concern
Common yarrow
25,045
20,903
Observations
Asteraceae
Achillea ptarmica
L.
LC
Least Concern
Sneezewort
3,184
2,468
Observations
Asteraceae
Acorus calamus
L.
LC
Least Concern
Sweet-flag
621
474
Observations
Acoraceae
Actaea rubra
(Aiton) Willd.
Red baneberry
694
583
Observations
Ranunculaceae
Adiantum pedatum
L.
Northern maidenhair
549
479
Observations
Pteridaceae
Adoxa moschatellina
L.
Moschatel
756
544
Observations
Viburnaceae
Agastache foeniculum
(Pursh) Kuntze
Anise hyssop
1,787
1,371
Observations
Lamiaceae
Ageratina altissima
(L.) R.M.King & H.Rob.
White Snakeroot
1,067
834
Observations
Asteraceae
Agoseris aurantiaca
(Hook.) Greene
Mountain agoseris
46
44
Observations
Asteraceae
Agoseris glauca
(Pursh) Raf.
Prairie agoseris
33
28
Observations
Asteraceae
Agropyron cristatum
(L.) Gaertn.
Crested wheatgrass
108
90
Observations
Poaceae
Agrostemma githago
L.
Common Corncockle
3,728
3,117
Observations
Caryophyllaceae
Agrostis canina
L.
LC
Least Concern
Velvet bent
49
31
Observations
Poaceae
Agrostis capillaris
L.
Common Bent
1,531
1,172
Observations
Poaceae
Agrostis exarata
Trin.
Spike redtop
11
6
Observations
Poaceae
Agrostis gigantea
Roth
Redtop
133
88
Observations
Poaceae
Agrostis hyemalis
(Walter) Britton, Sterns & Poggenb.
Winter bentgrass
4
4
Observations
Poaceae
Agrostis mertensii
Trin.
Northern bent
10
9
Observations
Poaceae
Agrostis microphylla
Steud.
Small-leaf bent
2
2
Observations
Poaceae
Agrostis scabra
Willd.
Tickle grass
2
2
Observations
Poaceae
Agrostis stolonifera
L.
LC
Least Concern
Spreading bent
358
235
Observations
Poaceae
Agrostis vinealis
Schreb.
Brown bent
16
13
Observations
Poaceae
Alchemilla alpina
L.
Alpine lady's-mantle
1,553
1,160
Observations
Rosaceae
Alchemilla filicaulis
Buser
Hairy lady's-mantle
50
40
Observations
Rosaceae
Alchemilla glabra
Neygenf.
Smooth lady's-mantle
163
115
Observations
Rosaceae
Alisma plantago-aquatica
L.
LC
Least Concern
Water-plantain
1,695
1,230
Observations
Alismataceae
Alisma triviale
Pursh
LC
Least Concern
Northern water-plantain
35
31
Observations
Alismataceae
Allium fistulosum
L.
Welsh onion
622
536
Observations
Amaryllidaceae
Allium schoenoprasum
L.
LC
Least Concern
Chives
4,213
3,535
Observations
Amaryllidaceae
Allium vineale
L.
Wild garlic
3,204
2,693
Observations
Amaryllidaceae
Alnus alnobetula
(Ehrh.) K.Koch
LC
Least Concern
Green Alder
1,549
1,088
Observations
Betulaceae
Alnus incana
(L.) Moench
LC
Least Concern
Grey alder
2,625
1,894
Observations
Betulaceae
Alnus rubra
Bong.
LC
Least Concern
Red alder
46
28
Observations
Betulaceae
Alopecurus aequalis
Sobol.
LC
Least Concern
Orange foxtail
117
73
Observations
Poaceae
Alopecurus arundinaceus
Poir.
LC
Least Concern
Creeping foxtail
35
28
Observations
Poaceae
Alopecurus geniculatus
L.
Marsh foxtail
107
68
Observations
Poaceae
Alopecurus magellanicus
Lam.
LC
Least Concern
Alpine foxtail
12
12
Observations
Poaceae
Alopecurus pratensis
L.
Meadow foxtail
2,570
1,963
Observations
Poaceae
Alyssum alyssoides
(L.) L.
Small alison
975
621
Observations
Brassicaceae
Amaranthus albus
L.
Prostrate pigweed
490
368
Observations
Amaranthaceae
Amaranthus blitoides
S.Watson
Mat Amaranth
496
341
Observations
Amaranthaceae
Amaranthus retroflexus
L.
Reflexed amaranth
8,264
6,158
Observations
Amaranthaceae
Ambrosia artemisiifolia
L.
Annual ragweed
4,724
3,731
Observations
Asteraceae
Ambrosia chamissonis
Greene
Silver bur ragweed
133
124
Observations
Asteraceae
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Species