Northwestern U.S.A. Plants of Northwestern U.S.A.Explore

• Families
• Genera
• Species 3,708

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Abies concolor (Gordon & Glend.) Lindl. ex Hildebr.

Least Concern

Colorado fir

607 366 Observations

Pinaceae

Abies grandis (Douglas ex D.Don) Lindl.

Least Concern

Giant Fir

553 347 Observations

Pinaceae

Abies lasiocarpa (Hook.) Nutt.

Least Concern

Alpine fir

164 125 Observations

Pinaceae

Abies magnifica A.Murray bis

Least Concern

California red fir

18 11 Observations

Pinaceae

Abies procera Rehder

Least Concern

Red fir

248 181 Observations

Pinaceae

Abronia ammophila Greene

Wyoming sand verbena

1 1 Observation

Nyctaginaceae

Abronia fragrans Nutt. ex Hook.

Fragrant sand-verbena

51 50 Observations

Nyctaginaceae

Abronia latifolia Eschsch.

Yellow sand-verbena

184 175 Observations

Nyctaginaceae

Abronia mellifera Douglas ex Hook.

White sand verbena

5 5 Observations

Nyctaginaceae

Abronia umbellata Lam.

Sand-verbena

151 136 Observations

Nyctaginaceae

Abutilon incanum (Link) Sweet

Least Concern

Pelotazo

18 16 Observations

Malvaceae

Abutilon theophrasti Medik.

Velvetleaf

2,880 2,265 Observations

Malvaceae

Acacia dealbata Link

Least Concern

Mimosa

5,591 4,424 Observations

Fabaceae

Acaena novae-zelandiae Kirk

New Zealand-bur

86 73 Observations

Rosaceae

Acanthospermum australe (Loefl.) Kuntze

Sheepbur

91 56 Observations

Asteraceae

Acanthospermum hispidum DC.

Bristly starbur

111 76 Observations

Asteraceae

Acer circinatum Pursh

Least Concern

Vine maple

366 307 Observations

Sapindaceae

Acer glabrum Torr.

Least Concern

Rocky Mountain maple

139 122 Observations

Sapindaceae

Acer grandidentatum Nutt.

Least Concern

Canyon maple

71 63 Observations

Sapindaceae

Acer macrophyllum Pursh

Least Concern

Bigleaf maple

1,071 909 Observations

Sapindaceae

Acer negundo L.

Least Concern

Boxelder

15,783 11,809 Observations

Sapindaceae

Achillea alpina L.

Chinese yarrow

18 12 Observations

Asteraceae

Achillea millefolium L.

Least Concern

Common yarrow

25,045 20,903 Observations

Asteraceae

Achillea nobilis L.

Noble yarrow

8,642 7,193 Observations

Asteraceae

Achillea ptarmica L.

Least Concern

Sneezewort

3,184 2,468 Observations

Asteraceae

Achlys triphylla DC.

Vanilla-leaf

72 66 Observations

Berberidaceae

Achyrachaena mollis Schauer

Blow wives

87 84 Observations

Asteraceae

Acmispon americanus (Nutt.) Rydb.

American Deerweed

26 18 Observations

Fabaceae

Aconitum columbianum Nutt.

Columbia aconite

171 146 Observations

Ranunculaceae

Acorus calamus L.

Least Concern

Sweet-flag

621 474 Observations

Acoraceae

Actaea elata (Nutt.) Prantl

Tall bugbane

22 14 Observations

Ranunculaceae

Actaea rubra (Aiton) Willd.

Red baneberry

694 583 Observations

Ranunculaceae

Adelinia grande (Douglas ex Lehm.) J.I.Cohen

Pacific hound's tongue

360 348 Observations

Boraginaceae

Adenocaulon bicolor Hook.

Trailplant

134 106 Observations

Asteraceae

Adiantum capillus-veneris L.

Least Concern

Maidenhair Fern

3,043 2,630 Observations

Pteridaceae

Adiantum jordanii Müll.Hal.

California Maidenhair Fern

162 160 Observations

Pteridaceae

Adonis aestivalis L.

Summer pheasant's-eye

696 453 Observations

Ranunculaceae

Adoxa moschatellina L.

Moschatel

756 544 Observations

Viburnaceae

Aegilops cylindrica Host

Least Concern

Jointed goat grass

56 32 Observations

Poaceae

Aegopodium podagraria L.

Ground Elder

11,189 8,980 Observations

Apiaceae

Aesculus californica (Spach) Nutt.

Least Concern

California buckeye

666 591 Observations

Sapindaceae

Aesculus hippocastanum L.

Vulnerable

Common Horse-chestnut

16,248 12,279 Observations

Sapindaceae

Aethusa cynapium L.

Fool's parsley

1,765 1,213 Observations

Apiaceae

Agalinis tenuifolia (Vahl) Raf.

Slender false foxglove

97 75 Observations

Orobanchaceae

Agastache foeniculum (Pursh) Kuntze

Anise hyssop

1,787 1,371 Observations

Lamiaceae

Agastache urticifolia (Benth.) Kuntze

Nettle-leaf horsemint

102 88 Observations

Lamiaceae

Ageratina herbacea (A.Gray) R.M.King & H.Rob.

Fragrant snakeroot

17 17 Observations

Asteraceae

Ageratina occidentalis (Hook.) R.M.King & H.Rob.

Western eupatorium

30 30 Observations

Asteraceae

Agoseris apargioides (Less.) Greene

Seaside agoseris

49 48 Observations

Asteraceae

Agoseris aurantiaca (Hook.) Greene

Mountain agoseris

46 44 Observations

Asteraceae

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