Vascular Plants

Includes all flowering plants, conifers, ferns and fern-allies.

Browse by common name:
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Common names beginning with V:
Downy-fruit valerian (Valeriana acutiloba)
Origin: Native
Edible valerian (Valeriana edulis)
Distribution: Occurring in the eastern region of Washington; Southern British Columbia south into Washington, Idaho, and Montana, east to Ontario and Ohio.
Habitat: A wide variety of open, somewhat moist habitats, from the foothills to rather high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Scouler's valerian (Valeriana scouleri)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California
Habitat: Wet meadows and moist woods, sea level to mid-elevations in the mountains
Origin: Native
Flowers: April - July
Growth Duration: Perennial
Sitka valerian (Valeriana sitchensis)
Distribution: Widely distributed throughout much of Washington; Alaska to California, east to Idaho and Montana.
Habitat: Common in moist areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Small-flower valerian (Valeriana occidentalis)
Origin: Native
Flowers: May - July
Growth Duration: Perennial
Wenatchee valerian (Valeriana columbiana)
Distribution: Occurring east of the Cascades crest, where endemic to the Wenatchee Mountains and adjacent areas.
Habitat: Rocky, open slopes, often on basalt, at mid-elevations in the mountains
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Western valerian (Valeriana occidentalis)
Origin: Native
Flowers: May - July
Growth Duration: Perennial
Woodland valerian (Valeriana dioica)
Distribution: British Columbia to Nova Scotia in Canada, south to northwest Washington, central Idaho and northwest Wyoming.
Habitat: Moist places in the mountains, often in wet meadows.
Origin: Native
Flowers: May - July
Growth Duration: Perennial
Valley-tassels (Castilleja attenuata)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California and Arizona.
Habitat: Drier areas at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Vanillagrass (Hierochloe odorata)
Distribution: Occurring in scattered locations across Washington; Alaska south to Washington, east across the northern half of North America to the Atlantic Coast.
Habitat: Wet meadows and marshes.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Vanillaleaf (Achlys triphylla)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California.
Habitat: Moist areas in deep woods to forest openings.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Vaseflower (Clematis hirsutissima)
Distribution: Occurring in only a few counties in central and eastern Washington; Washington south to Oregon, east to Montana, south to Arizona and New Mexico.
Habitat: Meadows, grasslands, and forest openings.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Velvet weed (Oenothera curtiflora)
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Open, sandy, rocky, often disturbed places.
Origin: Introduced
Flowers: June-September
Growth Duration: Annual
Creeping velvet-grass (Holcus mollis)
Origin: Introduced
Velvetleaf (Abutilon theophrasti)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed open places.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Annual
Velvetweed (Oenothera curtiflora)
Distribution: Occurring east of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Open, sandy, rocky, often disturbed places.
Origin: Introduced
Flowers: June-September
Growth Duration: Annual
Ventenata (Ventenata dubia)
Distribution: Chiefly in the eastern portion of Washington; British Columbia south to California, east to the Rocky Mountains; also in eastern North America.
Habitat: Roadsides, pastures, crop land, and other disturbed sites.
Origin: Introduced
Flowers: June-July
Growth Duration: Annual
Clasping-leaf Venus'-looking-glass (Triodanis perfoliata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across the U.S. to the Atlantic Coast and eastern Canada.
Habitat: Various habitats, from the valleys and plains to moderate elevations in the moutains.
Origin: Native
Flowers: May-August
Growth Duration: Annual
Venus-slipper (Calypso bulbosa)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, east across Canada to the Great Lakes region and eastern North America.
Habitat: Mostly in cool, deep shade of moist forests in soil rich in humus, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Blue verbena (Verbena hastata)
Distribution: Chiefly east of the Cascades in Washington; widely distributed throughout North America.
Habitat: Marshes, wetlands, streamsides, and other riparian areas.
Origin: Native
Flowers: July-September
Growth Duration: Biennial
White sand verbena (Abronia mellifera)
Distribution: Distributed east of the Cascades in Washington in the Columbia Basin and along the Snake River; north-central Oregon, southeastern Oregon and adjacent Idaho, southeastern Idaho and adjacent Wyoming.
Habitat: Dunes and sandy soil at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Yellow sand verbena (Abronia latifolia)
Distribution: West of the Cascades in Washington along the coast; Vancouver Island, British Columbia south to California.
Habitat: Coastal beaches and sand dunes.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Annual vernalgrass (Anthoxanthum aristatum)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia south to California; eastern half of North America.
Habitat: Meadows, grasslands, forest openings, and other disturbed, open areas at low to moderate elevations.
Origin: Introduced
Flowers: May-July
Growth Duration: Annual
Sweet vernalgrass (Anthoxanthum odoratum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, southern Great Plains, and eastern North America.
Habitat: Roadsides, fields, meadows, prairies, balds, lawns, and other disturbed open areas at low elevations.
Origin: Introduced from Europe
Flowers: April-July
Growth Duration: Perennial
Carpet vervain (Verbena bracteata)
Distribution: Occurring chiefly east of the Cascades in Washington; widely distributed throughout North America.
Habitat: Disturbed open areas in natural and impacted settings including roadsides and waste lots.
Origin: Native
Flowers: May-September
Growth Duration: Annual, Biennial, Perennial
European vervain (Verbena officinalis)
Origin: Introduced from Europe
Hoary vervain (Verbena stricta)
Distribution: Occurring in the northeastern region of Washington; widely distributed throughout much of the U.S. and northeastern Canada.
Habitat: Roadsides and other dry, open places.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Purpletop vervain (Verbena bonariensis)
Origin: Introduced
Vervain (Verbena officinalis)
Origin: Introduced from Europe
American vetch (Vicia americana)
Distribution: Widely distributed on both sides of the Cascades crest throughout much of Washington; Alaska to California, east across North America, except in the southeastern U.S., to the Atlantic Coast.
Habitat: Moist forest openings, forest edge, thickets, meadows, prairies, and disturbed areas.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Bird vetch (Vicia cracca)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, in scattered locations elsewhere in North America.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Common vetch (Vicia sativa)
Distribution: Occurring on both sides of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, forest edges, thickets, lawns, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia
Flowers: April-July
Growth Duration: Annual
Field milk vetch (Astragalus agrestis)
Distribution: Occurring east of the Cascades crest in Washington; Yukon Territory to California, east across North America to Canada\'s Atlantic Coast.
Habitat: Moist spots in sagebrush plains, and mountain meadows to alpine slopes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Giant vetch (Vicia nigricans)
Distribution: Occurring west of the Cascades crest in the coastal counties and east in the Columbia River Gorge in Washington; along the coast from Alaska to California, inland to the Willamette Valley in Oregon.
Habitat: Beach margins and headlands, forest openings, and along streams near the coast.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Hairy vetch (Vicia hirsuta)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, also in Idaho and Montana.
Habitat: Roadsides, forest edge, meadows, thickets, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: April-July
Growth Duration: Annual
Hairy vetch (Vicia villosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, meadows, grasslands, prairies, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: May-September
Growth Duration: Annual
Hungarian vetch (Vicia pannonica)
Distribution: Occurring west of the Cascades crest in the Puget Trough in Washington; Washington to California.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia
Flowers: May-June
Growth Duration: Annual
Lentil vetch (Vicia tetrasperma)
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California, also in northern Idaho and western Montana.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-August
Growth Duration: Annual
Purple crown vetch (Securigera varia)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east across North America.
Habitat: Roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Eurasia
Flowers: June-August
Growth Duration: Perennial
Purple milk vetch (Astragalus agrestis)
Distribution: Occurring east of the Cascades crest in Washington; Yukon Territory to California, east across North America to Canada\'s Atlantic Coast.
Habitat: Moist spots in sagebrush plains, and mountain meadows to alpine slopes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Slender vetch (Vicia tetrasperma)
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California, also in northern Idaho and western Montana.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-August
Growth Duration: Annual
Spring vetch (Vicia lathyroides)
Distribution: Occurring west of the Cascades crest in the Puget Sound lowlands in Washington; British Columbia to California; also in southeastern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Annual
Tiny vetch (Vicia hirsuta)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, also in Idaho and Montana.
Habitat: Roadsides, forest edge, meadows, thickets, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: April-July
Growth Duration: Annual
Winter vetch (Vicia villosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, meadows, grasslands, prairies, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: May-September
Growth Duration: Annual
Woolly vetch (Vicia villosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, meadows, grasslands, prairies, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: May-September
Growth Duration: Annual
Yellow vetch (Vicia lutea)
Distribution: Occurring west of the Cascades crest in the Puget Trough in Washington; Washington to California, also in the southeastern U.S.
Habitat: Roadsides, fields, lawns, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Annual
Silky beach vetchling (Lathyrus littoralis)
Distribution: Occurring in the coastal counties in Washington; British Columbia to California.
Habitat: Sand dunes and sandy beaches.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Thin-leaf vetchling (Lathyrus holochlorus)
Distribution: Occurring west of the Cascades crest in southwestern Washington; Washington to Oregon.
Habitat: Woodlands, prairies, pastures, and roadsides.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Yellow vetchling (Lathyrus aphaca)
Distribution: Known only from San Juan County in Washington; Washington to California, and in scattered locations in central and southern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Annual
Oval-leaved viburnum (Viburnum ellipticum)
Distribution: Occurring west of the Cascades crest chiefly along the southern border in Washington; southern Washington to northern California.
Habitat: Thickets, bottom lands, and open woods at low to middle elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Mile-a-minute vine (Fallopia baldschuanica)
Distribution: Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to Oregon, east to Idaho, also in scattered locations across North America.
Habitat: Roadsides, ditches, embankments, forest edge, and other disturbed open areas.
Origin: Introduced from central Asia
Flowers: Aug.-Sept.
Growth Duration: Perennial
Puncture vine (Tribulus terrestris)
Distribution: East of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Noxious weed of sandy soils and roadsides.
Origin: Introduced
Flowers: May-September
Growth Duration: Annual
3-nerved violet (Viola trinervata)
Distribution: Occurring east of the Cascades crest in Washington; north-central Washington to southeastern Oregon.
Habitat: Sagebrush flats and rocky hillsides, often on lithosol, where vernally moist.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Alaska violet (Viola langsdorffii)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to California.
Habitat: Peatlands, shores, snowmelt communities, and wet meadows, from lowlands to middle elevations.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Aleutian violet (Viola langsdorffii)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to California.
Habitat: Peatlands, shores, snowmelt communities, and wet meadows, from lowlands to middle elevations.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Canadian violet (Viola canadensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to the Rocky Mountains, further east across North America to the Atlantic Coast.
Habitat: Forest openings, riparian zones, and thickets from low to middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Darkwoods violet (Viola orbiculata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east to Montana and Wyoming.
Habitat: Open woods, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Dog violet (Viola riviniana)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Lawns, sidewalks, wastelots, and other disturbed areas at low elevations.
Origin: Introduced from Eurasia and northwest Africa
Flowers: March-September
Growth Duration: Perennial
Early blue violet (Viola adunca)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Dry to moist meadows and open woods, from the lowlands to subalpine areas.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Evergreen violet (Viola sempervirens)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Moist woods from low to middle elevations in the mountains.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Evergreen yellow violet (Viola orbiculata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east to Montana and Wyoming.
Habitat: Open woods, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Fan violet (Viola sheltonii)
Distribution: Chiefly east of the Cascades, from near Cle Elum, Kittitas County, Washington, south to Baja California, east to Idaho
Habitat: Chaparral or open forest, often under ponderosa pine
Origin: Native
Flowers: April - June
Growth Duration: Perennial
Flett's violet (Viola flettii)
Distribution: Endemic to the northern Olympic Mountains, Washington.
Habitat: Alpine rock crevices and talus slopes at high elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Howell's violet (Viola howellii)
Distribution: West of the Cascade crest in Washington; southern British Columbia south to northern California.
Habitat: Moist woods and prairies at low to moderate elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Kidney-leaf white violet (Viola renifolia)
Distribution: Occurring east of the Cascades crest in the north-central to northeastern counties in Washington; Alaska to northern Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America
Habitat: Peatlands, riparian zones, swamps, seeps, and damp thickets.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Lance-leaved violet (Viola lanceolata)
Origin: Introduced from eastern and central North America
Flowers: May - June
Growth Duration: Perennial
LeConte violet (Viola nephrophylla)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Newfoundland, south on the east side of the Cascades to California, east to Arizona.
Habitat: Moist places, especially in meadows and along streams.
Origin: Native
Flowers: May-July
Growth Duration: Annual, Perennial
Marsh violet (Viola palustris)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and near the Canadian border to Maine and Labrador
Habitat: Moist meadows and streambanks, low to mid-elevations in the mountains
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Northern blue violet (Viola sororia)
Distribution: Occurring east of the Cascades crest in northeastern Washington; Yukon Territory to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Dry to moist forest openings, thickets, meadows, and stream banks at middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Northern bog violet (Viola nephrophylla)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Newfoundland, south on the east side of the Cascades to California, east to Arizona.
Habitat: Moist places, especially in meadows and along streams.
Origin: Native
Flowers: May-July
Growth Duration: Annual, Perennial
Northern woodland violet (Viola sororia)
Distribution: Occurring east of the Cascades crest in northeastern Washington; Yukon Territory to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Dry to moist forest openings, thickets, meadows, and stream banks at middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Nuttall's violet (Viola nuttallii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Britsh Columbia to California, east to the Rocky Mountains.
Habitat: Grassland, sagebrush and juniper flats, and moist to dry openings in coniferous forests.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Olympic violet (Viola flettii)
Distribution: Endemic to the northern Olympic Mountains, Washington.
Habitat: Alpine rock crevices and talus slopes at high elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Pioneer violet (Viola glabella)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta and Montana.
Habitat: Moist woods and stream banks, low to middle elevations in the mountains.
Origin: Native
Flowers: March-July
Growth Duration: Perennial
Purplish violet (Viola purpurea)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Rocky Mountains.
Habitat: Open, rocky, fairly dry slopes, moderate to high elevations in the mountains
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Rain violet (Viola pluviae)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana; Eurasia.
Habitat: Wet areas at low to moderate elevations, including in part to full shade.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Redwood violet (Viola sempervirens)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Moist woods from low to middle elevations in the mountains.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Round-leaved violet (Viola orbiculata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east to Montana and Wyoming.
Habitat: Open woods, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Rugose violet (Viola canadensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to the Rocky Mountains, further east across North America to the Atlantic Coast.
Habitat: Forest openings, riparian zones, and thickets from low to middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Sagebrush violet (Viola trinervata)
Distribution: Occurring east of the Cascades crest in Washington; north-central Washington to southeastern Oregon.
Habitat: Sagebrush flats and rocky hillsides, often on lithosol, where vernally moist.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Shelton's violet (Viola sheltonii)
Distribution: Chiefly east of the Cascades, from near Cle Elum, Kittitas County, Washington, south to Baja California, east to Idaho
Habitat: Chaparral or open forest, often under ponderosa pine
Origin: Native
Flowers: April - June
Growth Duration: Perennial
Small white violet (Viola macloskeyi)
Distribution: British Columbia to Alberta, south in the mountains to California.
Habitat: Boggy and wet ground from low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Stream violet (Viola glabella)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta and Montana.
Habitat: Moist woods and stream banks, low to middle elevations in the mountains.
Origin: Native
Flowers: March-July
Growth Duration: Perennial
Sweet blue violet (Viola odorata)
Distribution: In scattered locations throughout Washington; introduced and escaping at various location in the United States.
Habitat: Sheltered, disturbed areas in somewhat moist soil.
Origin: Introduced
Flowers: March - May and August - September
Growth Duration: Perennial
Wild dog violet (Viola adunca)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Dry to moist meadows and open woods, from the lowlands to subalpine areas.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Wood violet (Viola riviniana)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Lawns, sidewalks, wastelots, and other disturbed areas at low elevations.
Origin: Introduced from Eurasia and northwest Africa
Flowers: March-September
Growth Duration: Perennial
Columbia virgin's bower (Clematis occidentalis)
Distribution: East of the Cascades in Washington; British Columbia south to Oregon, east to Saskatchewan and Wyoming.
Habitat: Often in deep, fine soils in shady forest, also in cliffs and other rocky sites in open woods and thickets, at moderate to high elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Oriental virgin's bower (Clematis orientalis)
Distribution: Known from Yakima County in Washington; also known from the Columbia River Gorge area in Oregon, and other scattered locations in southwestern North America.
Habitat: Disturbed open areas at low elevations.
Origin: Introduced
Flowers: June-July
Growth Duration: Perennial