Vascular Plants
Includes all flowering plants, conifers, ferns and fern-allies.
Common names beginning with L:
211 common names
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Index to common names:
Labrador-tea, lace-fern, lacepod, ladies'-tresses, lady's-mantle, lady's-slipper, lady's-thumb, lady-fern, lamb's-lettuce, lambsquarters, landcress, larch, larkspur, lasthenia, laurel, laurustinus, layia, leapordbane, leatherflower, lemonbalm, lemonweed, lentil, leopard-bane, leopardbane, leptosiphon, lettuce, lewisia, licorice, lilac, lilaeopsis, lily, lily-of-the-valley, linanthus, linden, linseed, lion's heart, lip fern, lobelia, locoweed, locust, lomatium, London plane, loosestrife, lords and ladies, lotus, lousewort, lovage, love-in-a-mist, lovegrass, lucerne, luetkea, luina, lungwort, lupine, lyme grassBog Labrador-tea (Rhododendron groenlandicum)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Labrador-tea (Rhododendron groenlandicum)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Mountain Labrador-tea (Rhododendron columbianum)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Rusty Labrador-tea (Rhododendron groenlandicum)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon and Idaho, east across Canada and the Great Lakes region to northeastern North America.
Habitat: Swamps and bogs at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Smooth Labrador-tea (Rhododendron columbianum)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Western Labrador-tea (Rhododendron columbianum)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California,
Habitat: Swamps and bogs at low elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Fee's lace-fern (Myriopteris gracilis)
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Slender lace-fern (Myriopteris gracilis)
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Lacepod (Thysanocarpus curvipes)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho, Colorado, and New Mexico.
Habitat: Uncommon on dry, open hillsides and borders of woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho, Colorado, and New Mexico.
Habitat: Uncommon on dry, open hillsides and borders of woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Diluvial ladies'-tresses (Spiranthes diluvialis)
Distribution: Occurring east of the Cascades crest in Washington; Washington to Idaho, Montana, Wyoming, and Colorado.
Habitat: Moist to wet meadows, marshes, and riparian areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to Idaho, Montana, Wyoming, and Colorado.
Habitat: Moist to wet meadows, marshes, and riparian areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Hooded ladies'-tresses (Spiranthes romanzoffiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Seasonally moist to swampy areas, sometimes in disturbed areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Seasonally moist to swampy areas, sometimes in disturbed areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Western ladies'-tresses (Spiranthes porrifolia)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho.
Habitat: Moist to swampy areas.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho.
Habitat: Moist to swampy areas.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Western lady's-mantle (Aphanes arvensis)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, reported in Idaho, also along Atlantic Coast in the U.S.
Habitat: Ledges, often limy, sandy shores, hot springs, and other disturbed open ground at low elevations.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, reported in Idaho, also along Atlantic Coast in the U.S.
Habitat: Ledges, often limy, sandy shores, hot springs, and other disturbed open ground at low elevations.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Annual
Clustered lady's-slipper (Cypripedium fasciculatum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Santa Cruz County, California, east to Montana and Colorado.
Habitat: Moist to rather dry and rocky, open coniferous forests.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Santa Cruz County, California, east to Montana and Colorado.
Habitat: Moist to rather dry and rocky, open coniferous forests.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Mountain lady's-slipper (Cypripedium montanum)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming.
Habitat: Dry to moist open woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming.
Habitat: Dry to moist open woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Yellow lady's-slipper (Cypripedium parviflorum)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains; throughout most of Canada and the central, southeastern, and northeastern regions of the U.S.
Habitat: Fens, wetlands, shorelines, and damp woodlands, often where calcareous.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains; throughout most of Canada and the central, southeastern, and northeastern regions of the U.S.
Habitat: Fens, wetlands, shorelines, and damp woodlands, often where calcareous.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Lady's-thumb (Persicaria maculosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: A weedy species, usually on moist, cultivated or otherwise disturbed soil.
Origin: Introduced from Eurasia
Flowers: March-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: A weedy species, usually on moist, cultivated or otherwise disturbed soil.
Origin: Introduced from Eurasia
Flowers: March-September
Growth Duration: Perennial
Spotted lady's-thumb (Persicaria maculosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: A weedy species, usually on moist, cultivated or otherwise disturbed soil.
Origin: Introduced from Eurasia
Flowers: March-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: A weedy species, usually on moist, cultivated or otherwise disturbed soil.
Origin: Introduced from Eurasia
Flowers: March-September
Growth Duration: Perennial
Alpine lady-fern (Athyrium distentifolium)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, Wyoming and Colorado; also in northeastern Canada and Greenland.
Habitat: Open, rocky slopes and along streams at mid- to high elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, Wyoming and Colorado; also in northeastern Canada and Greenland.
Habitat: Open, rocky slopes and along streams at mid- to high elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Lady-fern (Athyrium filix-femina)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; circumboreal.
Habitat: Moist woods, meadows, forest edge, and shaded riparian corridors from low to middle elevations.
Origin: Native
Spores: May-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; circumboreal.
Habitat: Moist woods, meadows, forest edge, and shaded riparian corridors from low to middle elevations.
Origin: Native
Spores: May-September
Growth Duration: Perennial
Lamb's-lettuce (Valerianella locusta)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains; eastern half of North America east of the Great Plains.
Habitat: Moist, open places, often in disturbed soil.
Origin: Introduced from Europe
Flowers: April-May
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains; eastern half of North America east of the Great Plains.
Habitat: Moist, open places, often in disturbed soil.
Origin: Introduced from Europe
Flowers: April-May
Growth Duration: Annual
Lambsquarters (Chenopodium album)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, forest edge, wastelots, and other disturbed areas.
Origin: Introduced from Europe, but some populations in the Midwest may be native to North America, according to FNA
Flowers: June-September
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, forest edge, wastelots, and other disturbed areas.
Origin: Introduced from Europe, but some populations in the Midwest may be native to North America, according to FNA
Flowers: June-September
Growth Duration: Annual
Landcress (Barbarea verna)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to California, east to Idaho and Colorado; also in central and eastern U.S.
Habitat: Fields, roadsides, wastelots, and other disturbed sites.
Origin: Introduced from Eurasia
Flowers: April-July
Growth Duration: Biennial, Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to California, east to Idaho and Colorado; also in central and eastern U.S.
Habitat: Fields, roadsides, wastelots, and other disturbed sites.
Origin: Introduced from Eurasia
Flowers: April-July
Growth Duration: Biennial, Perennial
Subalpine larch (Larix lyallii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to the central Cascades and Wenatchee Mountains in Washington, east to Montana and Alberta.
Habitat: Generally near timberline, preferring north-facing slopes.
Origin: Native
Cones: June-July (cone production)
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to the central Cascades and Wenatchee Mountains in Washington, east to Montana and Alberta.
Habitat: Generally near timberline, preferring north-facing slopes.
Origin: Native
Cones: June-July (cone production)
Growth Duration: Perennial
Western larch (Larix occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and Montana.
Habitat: Mountain valleys to middle elevations in the mountains.
Origin: Native
Cones: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and Montana.
Habitat: Mountain valleys to middle elevations in the mountains.
Origin: Native
Cones: May-June
Growth Duration: Perennial
Basaltic larkspur (Delphinium basalticum)
Distribution: Occurring in the Columbia River Gorge in Washington; southcentral Washington and adjacent Oregon.
Habitat: Basaltic cliff faces, outcropping, and exposed slopes.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring in the Columbia River Gorge in Washington; southcentral Washington and adjacent Oregon.
Habitat: Basaltic cliff faces, outcropping, and exposed slopes.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Burke's larkspur (Delphinium ×burkei)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Moist meadows and seasonally damp open sagebrush and ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Moist meadows and seasonally damp open sagebrush and ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Hedge nettle larkspur (Delphinium stachydeum)
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to northeast California, east to Idaho and northern Nevada.
Habitat: Dry sagebrush to ponderosa or lodgepole pine forests
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to northeast California, east to Idaho and northern Nevada.
Habitat: Dry sagebrush to ponderosa or lodgepole pine forests
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Kittitas larkspur (Delphinium multiplex)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Chelan, Kittitas, and Yakima counties in Washington.
Habitat: Along rocky, usually intermitant streams or springs in sagebrush hills to moderate elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Chelan, Kittitas, and Yakima counties in Washington.
Habitat: Along rocky, usually intermitant streams or springs in sagebrush hills to moderate elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Line-petaled larkspur (Delphinium lineapetalum)
Distribution: Occurring east of the Cascades crest, where endemic to Chelan and Kittitas counties.
Habitat: Meadows and forest edge from lowland valleys to lower mountain slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where endemic to Chelan and Kittitas counties.
Habitat: Meadows and forest edge from lowland valleys to lower mountain slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Menzies larkspur (Delphinium menziesii)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Coastal bluffs and prairies to moist meadows and forest openings at moderate elevations in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Coastal bluffs and prairies to moist meadows and forest openings at moderate elevations in the mountains.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Nuttall's larkspur (Delphinium nuttallii)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Washington to Willamette Valley, Oregon.
Habitat: Gravelly outwash prairies and basaltic cliffs.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Washington to Willamette Valley, Oregon.
Habitat: Gravelly outwash prairies and basaltic cliffs.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Olympic larkspur (Delphinium glareosum)
Distribution: Occurring in the Olympics and Cascades Range in Washington; British Columbia to Oregon.
Habitat: Alpine and subalpine ridges and talus slopes, sometimes found at lower elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring in the Olympics and Cascades Range in Washington; British Columbia to Oregon.
Habitat: Alpine and subalpine ridges and talus slopes, sometimes found at lower elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Pale larkspur (Delphinium glaucum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and the Canadian Great Plains.
Habitat: Meadows and wet thickets, bogs, streambanks, and coniferous forest openings at middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and the Canadian Great Plains.
Habitat: Meadows and wet thickets, bogs, streambanks, and coniferous forest openings at middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Pale larkspur (Delphinium leucophaeum)
Distribution: Occurring west of the Cascades crest in Washington, where known only from Lewis County in Washington; Lewis County, Washington to Willamette Valley, Oregon.
Habitat: Bluffs, open ground, and moist lowland meadows where undisturbed.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington, where known only from Lewis County in Washington; Lewis County, Washington to Willamette Valley, Oregon.
Habitat: Bluffs, open ground, and moist lowland meadows where undisturbed.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Poison larkspur (Delphinium trolliifolium)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Moist, shady woods at low to middle elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Moist, shady woods at low to middle elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Slim larkspur (Delphinium depauperatum)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Idaho, and Nevada.
Habitat: From vernally moist sagebrush valleys to subalpine meadows.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Idaho, and Nevada.
Habitat: From vernally moist sagebrush valleys to subalpine meadows.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Spiked larkspur (Delphinium stachydeum)
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to northeast California, east to Idaho and northern Nevada.
Habitat: Dry sagebrush to ponderosa or lodgepole pine forests
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to northeast California, east to Idaho and northern Nevada.
Habitat: Dry sagebrush to ponderosa or lodgepole pine forests
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Sutherland's larkspur (Delphinium sutherlandii)
Distribution: Occurring in northeastern Washington; southeastern British Columbia and adjacent Washington, east across northern Idaho to northwestern Montana.
Habitat: Dry meadows and open conifer forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in northeastern Washington; southeastern British Columbia and adjacent Washington, east across northern Idaho to northwestern Montana.
Habitat: Dry meadows and open conifer forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Thin-petal larkspur (Delphinium nuttallianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Dry, gravelly ground, sagebrush deserts to the ponderosa pine region in the mountains.
Origin: Native
Flowers: March-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Dry, gravelly ground, sagebrush deserts to the ponderosa pine region in the mountains.
Origin: Native
Flowers: March-August
Growth Duration: Perennial
Two-spike larkspur (Delphinium distichum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Montana and Wyoming.
Habitat: Vernally wet swales and meadows, in sagebrush or ponderosa pine forest.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Montana and Wyoming.
Habitat: Vernally wet swales and meadows, in sagebrush or ponderosa pine forest.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Upland larkspur (Delphinium nuttallianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Dry, gravelly ground, sagebrush deserts to the ponderosa pine region in the mountains.
Origin: Native
Flowers: March-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Dry, gravelly ground, sagebrush deserts to the ponderosa pine region in the mountains.
Origin: Native
Flowers: March-August
Growth Duration: Perennial
Wenatchee larkspur (Delphinium viridescens)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains of Chelan and Kittitas counties.
Habitat: Boggy meadowlands.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains of Chelan and Kittitas counties.
Habitat: Boggy meadowlands.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Western larkspur (Delphinium occidentale)
Distribution: Occurring east of the Cascades crest in southeastern Washington; Washington to northeastern Nevada, east to Montana, Wyoming, Colorado, and Utah.
Habitat: Montane meadows and thickets, bogs, and streamsides.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; Washington to northeastern Nevada, east to Montana, Wyoming, Colorado, and Utah.
Habitat: Montane meadows and thickets, bogs, and streamsides.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Yellow-white larkspur (Delphinium xantholeucum)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Okanogan, Chelan, and Douglas counties.
Habitat: Dry, grassy hillsides and ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Okanogan, Chelan, and Douglas counties.
Habitat: Dry, grassy hillsides and ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Smooth lasthenia (Lasthenia glaberrima)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern Washington to central California.
Habitat: Wet or muddy ground at low elevations, including venral pools.
Origin: Native
Flowers: May-July
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern Washington to central California.
Habitat: Wet or muddy ground at low elevations, including venral pools.
Origin: Native
Flowers: May-July
Growth Duration: Annual
English laurel (Prunus laurocerasus)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Portugal laurel (Prunus lusitanica)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Thickets, forested slopes, grasslands, and shorelines.
Origin: Introduced from Europe
Flowers: April-June
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Thickets, forested slopes, grasslands, and shorelines.
Origin: Introduced from Europe
Flowers: April-June
Laurustinus (Viburnum tinus)
Distribution: Occurring west of the Cascades crest in lowland western Washington;
Habitat: Disturbed areas at low elevation, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington;
Habitat: Disturbed areas at low elevation, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
White layia (Layia glandulosa)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho, Utah, Arizona and New Mexico.
Habitat: Dry, open areas from sagebrush desert to low elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho, Utah, Arizona and New Mexico.
Habitat: Dry, open areas from sagebrush desert to low elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Leafy leapordbane (Arnica chamissonis)
Distribution: Occurring both sides of the Cascades, including the northeastern corner of Washington; Alaska to California, east to the Rocky Mountains, east across Canada to the Atlantic Coast.
Habitat: Meadows and wet places from middle elevations to the subalpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring both sides of the Cascades, including the northeastern corner of Washington; Alaska to California, east to the Rocky Mountains, east across Canada to the Atlantic Coast.
Habitat: Meadows and wet places from middle elevations to the subalpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Leatherflower (Clematis hirsutissima)
Distribution: Occurring east of the Cascades crest in eastern Washington; Washington 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
Distribution: Occurring east of the Cascades crest in eastern Washington; Washington 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
Lemonbalm (Melissa officinalis)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; Alaska to California, east to Idaho and Montana; also in central and eastern North America.
Habitat: Roadsides and other disturbed habitats.
Origin: Introduced from Eurasia
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; Alaska to California, east to Idaho and Montana; also in central and eastern North America.
Habitat: Roadsides and other disturbed habitats.
Origin: Introduced from Eurasia
Flowers: June-August
Growth Duration: Perennial
Wild lemonweed (Ladeania lanceolata)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Great Plains.
Habitat: Sagebrush steppe habitat in dry areas, often where sandy.
Origin: Native
Flowers: May-June (September-October)
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Great Plains.
Habitat: Sagebrush steppe habitat in dry areas, often where sandy.
Origin: Native
Flowers: May-June (September-October)
Growth Duration: Perennial
Water lentil (Lemna minor)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; cosmopolitan.
Habitat: In standing or slow-moving fresh water
Origin: Native
Flowers: June - October
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; cosmopolitan.
Habitat: In standing or slow-moving fresh water
Origin: Native
Flowers: June - October
Growth Duration: Perennial
Willdenow's leopard-bane (Doronicum willdenowii)
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to western Washington.
Habitat: Roadsides and disturbed forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to western Washington.
Habitat: Roadsides and disturbed forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Cordilleran leopardbane (Arnica mollis)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist meadows from middle elevations to the alpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist meadows from middle elevations to the alpine.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Daffodil leopardbane (Arnica latifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Common in forest openings and meadows, and open, rocky areas from middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Common in forest openings and meadows, and open, rocky areas from middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Heart-leaf leopardbane (Arnica cordifolia)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, and the Great Lakes region.
Habitat: Light forest understory, openings, and edge, from low elevations to the subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, and the Great Lakes region.
Habitat: Light forest understory, openings, and edge, from low elevations to the subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Rayless leopardbane (Arnica discoidea)
Distribution: Occurring in the Cascades Mountains of Klickitat and Skamania counties in Washington; Washington to California, east to Nevada.
Habitat: Forest openings from middle elevations to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Cascades Mountains of Klickitat and Skamania counties in Washington; Washington to California, east to Nevada.
Habitat: Forest openings from middle elevations to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Shining leopardbane (Arnica fulgens)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Meadows and open slopes from the foothills to middle elevations in the mountains
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Meadows and open slopes from the foothills to middle elevations in the mountains
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Sierran leopardbane (Arnica nevadensis)
Distribution: Occurring in the Cascades and Olympic mountains in Washington; Washington to California, east to Nevada.
Habitat: Open, rocky slopes and forest openings in the subalpine and alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Cascades and Olympic mountains in Washington; Washington to California, east to Nevada.
Habitat: Open, rocky slopes and forest openings in the subalpine and alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Slender leopardbane (Arnica gracilis)
Distribution: Occurring on both sides of the Cascades crest in the mountainous areas in Washington; British Columbia to Oregon, east to Alberta, Montana, Wyoming, and Utah.
Habitat: Dry, rocky slopes and meadows, from the subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in the mountainous areas in Washington; British Columbia to Oregon, east to Alberta, Montana, Wyoming, and Utah.
Habitat: Dry, rocky slopes and meadows, from the subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Spear-leaf leopardbane (Arnica longifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Rocky soil in seeps or springs, cliffs, or riverbanks, from middle elevations to the alpine.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Rocky soil in seeps or springs, cliffs, or riverbanks, from middle elevations to the alpine.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Subalpine leopardbane (Arnica rydbergii)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to northern California, east to Alberta and Colorado.
Habitat: Dry meadows and open slopes at high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to northern California, east to Alberta and Colorado.
Habitat: Dry meadows and open slopes at high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Twin leopardbane (Arnica sororia)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Wyoming.
Habitat: From low elevation prairies and grasslands to coniferous forest openings at middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Wyoming.
Habitat: From low elevation prairies and grasslands to coniferous forest openings at middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Nuttall's leptosiphon (Leptosiphon nuttallii)
Distribution: Occurring in the Cascades Range and Blue Mountains in Washington; Washington to California, east to Montana, Colorado and New Mexico.
Habitat: Open rocky slopes at middle to high elevations in the mountains
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Cascades Range and Blue Mountains in Washington; Washington to California, east to Montana, Colorado and New Mexico.
Habitat: Open rocky slopes at middle to high elevations in the mountains
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Blue lettuce (Lactuca tatarica)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains, Great Lakes region, and northeastern North America.
Habitat: Meadows, thickets, and other moist places at low to middle elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains, Great Lakes region, and northeastern North America.
Habitat: Meadows, thickets, and other moist places at low to middle elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Canadian wild lettuce (Lactuca canadensis)
Distribution: Occurring in scattered locations on both sides of the Cascades crest; Yukon Territory to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, disturbed forest edge, wastelots, and other disturbed places.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Annual, Biennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest; Yukon Territory to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, disturbed forest edge, wastelots, and other disturbed places.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Annual, Biennial
Florida blue lettuce (Lactuca canadensis)
Distribution: Occurring in scattered locations on both sides of the Cascades crest; Yukon Territory to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, disturbed forest edge, wastelots, and other disturbed places.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Annual, Biennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest; Yukon Territory to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, disturbed forest edge, wastelots, and other disturbed places.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Annual, Biennial
Garden lettuce (Lactuca sativa)
Distribution: Occurring in scattered locations in Washington; Washington to California, east to Idaho; in scattered locations in the central U.S., more commonly distributed in eastern North America.
Habitat: Disturbed areas, often escaping from cultivation.
Origin: Introduced
Flowers: July-September
Growth Duration: Annual, Biennial
Distribution: Occurring in scattered locations in Washington; Washington to California, east to Idaho; in scattered locations in the central U.S., more commonly distributed in eastern North America.
Habitat: Disturbed areas, often escaping from cultivation.
Origin: Introduced
Flowers: July-September
Growth Duration: Annual, Biennial
Great lettuce (Lactuca virosa)
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Least lettuce (Lactuca saligna)
Distribution: Occurring in scattered locations in Washington; Washington to California, east across the southwestern U.S. to the central U.S. and northeastern North America.
Habitat: Disturbed areas, roadsides, and meadows.
Origin: Introduced from Europe
Flowers: August-October
Growth Duration: Annual, Biennial
Distribution: Occurring in scattered locations in Washington; Washington to California, east across the southwestern U.S. to the central U.S. and northeastern North America.
Habitat: Disturbed areas, roadsides, and meadows.
Origin: Introduced from Europe
Flowers: August-October
Growth Duration: Annual, Biennial
Louisiana lettuce (Lactuca ludoviciana)
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Prairie lettuce (Lactuca ludoviciana)
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Prickly lettuce (Lactuca serriola)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed places.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Annual, Biennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed places.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Annual, Biennial
Tall blue lettuce (Lactuca biennis)
Distribution: Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Moist places at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Moist places at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Tall lettuce (Lactuca virosa)
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Wall lettuce (Mycelis muralis)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to Oregon; also in eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas from the lowlands to middle elevations in the mountains.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to Oregon; also in eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas from the lowlands to middle elevations in the mountains.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Annual
Western lettuce (Lactuca ludoviciana)
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Distribution: Occurring in scattered locations across Washington; southwestern British Columbia to California, east to the Great Lakes region and south-central U.S.
Habitat: Open, disturbed sites, often where moist.
Origin: Introduced from central North America
Flowers: July-September
Growth Duration: Biennial, Perennial
Western white lettuce (Nabalus hastatus)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to Oregon, east to Alberta, Idaho, and Montana.
Habitat: Streambanks, forest edge, and moist, shaded places from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to Oregon, east to Alberta, Idaho, and Montana.
Habitat: Streambanks, forest edge, and moist, shaded places from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Wild blue lettuce (Lactuca biennis)
Distribution: Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Moist places at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Distribution: Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Moist places at low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Annual
Wild lettuce (Lactuca virosa)
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Distribution: Occurring west of the Cascades crest in lowland areas in Washington; also in California, Mississippi, and Maryland.
Habitat: Roadsides, ditches, sidewalks, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Growth Duration: Biennial
Willow lettuce (Lactuca saligna)
Distribution: Occurring in scattered locations in Washington; Washington to California, east across the southwestern U.S. to the central U.S. and northeastern North America.
Habitat: Disturbed areas, roadsides, and meadows.
Origin: Introduced from Europe
Flowers: August-October
Growth Duration: Annual, Biennial
Distribution: Occurring in scattered locations in Washington; Washington to California, east across the southwestern U.S. to the central U.S. and northeastern North America.
Habitat: Disturbed areas, roadsides, and meadows.
Origin: Introduced from Europe
Flowers: August-October
Growth Duration: Annual, Biennial
Wire lettuce (Stephanomeria tenuifolia)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains, northern Great Plains, and Texas.
Habitat: Dry, often rocky places, from the foothills and plains to moderate elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains, northern Great Plains, and Texas.
Habitat: Dry, often rocky places, from the foothills and plains to moderate elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Alpine lewisia (Lewisia pygmaea)
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open, often gravelly, moist to rather dry areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open, often gravelly, moist to rather dry areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Columbia lewisia (Lewisia columbiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open gravelly or rocky slopes and rock crevices at middle to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open gravelly or rocky slopes and rock crevices at middle to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Dwarf lewisia (Lewisia pygmaea)
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open, often gravelly, moist to rather dry areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open, often gravelly, moist to rather dry areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Siskiyou lewisia (Lewisia cotyledon)
Distribution: Occurring west of the Cascades crest in the Goat Rocks Wilderness, where it has been intentionally planted and may persist; otherwise southwestern Oregon to adjacent California.
Habitat: Alpine areas.
Origin: Introduced from Oregon and California
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in the Goat Rocks Wilderness, where it has been intentionally planted and may persist; otherwise southwestern Oregon to adjacent California.
Habitat: Alpine areas.
Origin: Introduced from Oregon and California
Flowers: July-August
Growth Duration: Perennial
Three leaf lewisia (Lewisia triphylla)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Montana and south in the Rocky Mountains.
Habitat: Open, usually sandy areas where vernally moist, ponderosa pine forests to subalpine meadows.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Montana and south in the Rocky Mountains.
Habitat: Open, usually sandy areas where vernally moist, ponderosa pine forests to subalpine meadows.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Tweedy's lewisia (Lewisiopsis tweedyi)
Distribution: Occurring east of the Cascades crest in Kittitas, Chelan, and Okanogan counties in Washington; south-central British Columbia to north-central Washington.
Habitat: Rock outcroppings and dry slopes of open ponderosa pine/Douglas fir forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Kittitas, Chelan, and Okanogan counties in Washington; south-central British Columbia to north-central Washington.
Habitat: Rock outcroppings and dry slopes of open ponderosa pine/Douglas fir forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
American licorice (Glycyrrhiza lepidota)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Ontario and Texas.
Habitat: Stream and riverbanks, riparian corridors, and other wet areas, often associated with disturbance.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Ontario and Texas.
Habitat: Stream and riverbanks, riparian corridors, and other wet areas, often associated with disturbance.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Wild licorice (Glycyrrhiza lepidota)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Ontario and Texas.
Habitat: Stream and riverbanks, riparian corridors, and other wet areas, often associated with disturbance.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Ontario and Texas.
Habitat: Stream and riverbanks, riparian corridors, and other wet areas, often associated with disturbance.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Common lilac (Syringa vulgaris)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east in scattered locations across North America to the Atlantic Coast.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east in scattered locations across North America to the Atlantic Coast.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced
Flowers: April-June
Growth Duration: Perennial
Western lilaeopsis (Lilaeopsis occidentalis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Marshes, river banks, salt flats, muddy or sandy beaches and shores along and near the coast.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Marshes, river banks, salt flats, muddy or sandy beaches and shores along and near the coast.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Alp lily (Lloydia serotina)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon and Nevada, east to Alberta and New Mexico.
Habitat: Gravelly ridges, cliffs and rock crevices at high elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon and Nevada, east to Alberta and New Mexico.
Habitat: Gravelly ridges, cliffs and rock crevices at high elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Alpine lily (Lloydia serotina)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon and Nevada, east to Alberta and New Mexico.
Habitat: Gravelly ridges, cliffs and rock crevices at high elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon and Nevada, east to Alberta and New Mexico.
Habitat: Gravelly ridges, cliffs and rock crevices at high elevations.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Avalanche-lily (Erythronium montanum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Coast Range and Vancouver Island in British Columbia to Oregon.
Habitat: Forest openings and mountain meadows, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Coast Range and Vancouver Island in British Columbia to Oregon.
Habitat: Forest openings and mountain meadows, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Black lily (Fritillaria camschatcensis)
Distribution: Occurring west of the Cascades crest in northwestern Washington; Alaska to Oregon.
Habitat: Moist areas from near tide flats to mountain meadows.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in northwestern Washington; Alaska to Oregon.
Habitat: Moist areas from near tide flats to mountain meadows.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Blue umber lily (Triteleia grandiflora)
Distribution: Occurring chiefly east of the Cascades crest in Washington, but also occurring in the north Puget Sound area; British Columbia to California, east to Montana, Idaho, Wyoming and Utah.
Habitat: Prairies, grasslands, balds and forest openings, often where seasonally dry, from the coast to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington, but also occurring in the north Puget Sound area; British Columbia to California, east to Montana, Idaho, Wyoming and Utah.
Habitat: Prairies, grasslands, balds and forest openings, often where seasonally dry, from the coast to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Checker lily (Fritillaria affinis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Chocolate lily (Fritillaria affinis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Columbia lily (Lilium columbianum)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to northwestern Montana.
Habitat: Prairies, forest edge, forest openings, and meadows from sea level to to the subalpine.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to northwestern Montana.
Habitat: Prairies, forest edge, forest openings, and meadows from sea level to to the subalpine.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Rice-root lily (Fritillaria affinis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, disjunct in eastern Washington and northern Idaho.
Habitat: Prairies, balds, and grassy bluffs to woodlands and coniferous forests, sea level to fairly high elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
White avalanche-lily (Erythronium montanum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Coast Range and Vancouver Island in British Columbia to Oregon.
Habitat: Forest openings and mountain meadows, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Coast Range and Vancouver Island in British Columbia to Oregon.
Habitat: Forest openings and mountain meadows, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Wild easter lily (Erythronium oregonum)
Distribution: Occurring west of the Cascades crest in the Puget Sound lowlands and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Prairies, rocky balds, moist woods; at low elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in the Puget Sound lowlands and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Prairies, rocky balds, moist woods; at low elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Yellow pond lily (Nuphar polysepala)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Northwest Territory, Alberta, and the Rocky Mountain States.
Habitat: Ponds, shallow lakes, oxbows, and sluggish streams from low to middle elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Northwest Territory, Alberta, and the Rocky Mountain States.
Habitat: Ponds, shallow lakes, oxbows, and sluggish streams from low to middle elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Wild lily-of-the-valley (Maianthemum dilatatum)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east to northern Idaho.
Habitat: Shady, moist areas, open to dense woods, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east to northern Idaho.
Habitat: Shady, moist areas, open to dense woods, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Baker's linanthus (Leptosiphon bolanderi)
Distribution: Occurring east of the Cascades crest in the Columbia River Gorge in Washington; Klickitat County, Washington to California.
Habitat: Dry, open places at lower elevations, often on serpentine.
Origin: Native
Flowers: April-May
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in the Columbia River Gorge in Washington; Klickitat County, Washington to California.
Habitat: Dry, open places at lower elevations, often on serpentine.
Origin: Native
Flowers: April-May
Growth Duration: Annual
Bicolored linanthus (Leptosiphon bicolor)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southwestern British Columbia to California.
Habitat: Open areas at lower elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southwestern British Columbia to California.
Habitat: Open areas at lower elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Northern linanthus (Leptosiphon septentrionalis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to northern Rocky Mountains and Great Plains.
Habitat: In seasonally wet open plains and slopes from low to moderate elevations.
Origin: Native
Flowers: May-July
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to northern Rocky Mountains and Great Plains.
Habitat: In seasonally wet open plains and slopes from low to moderate elevations.
Origin: Native
Flowers: May-July
Growth Duration: Annual
Thread-stem linanthus (Leptosiphon liniflorus)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California.
Habitat: open, dry areas in sagebrush flats to Ponderosa pine forests.
Origin: Native
Flowers: April-June.
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; Washington to California.
Habitat: open, dry areas in sagebrush flats to Ponderosa pine forests.
Origin: Native
Flowers: April-June.
Growth Duration: Annual
Thread-stemmed linanthus (Leptosiphon liniflorus)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California.
Habitat: open, dry areas in sagebrush flats to Ponderosa pine forests.
Origin: Native
Flowers: April-June.
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; Washington to California.
Habitat: open, dry areas in sagebrush flats to Ponderosa pine forests.
Origin: Native
Flowers: April-June.
Growth Duration: Annual
Small-leaved linden (Tilia cordata)
Distribution: Occurring on both sides of the Cascades crest in Washington; in scattered areas across North America, where occasionally escaping from cultivation.
Habitat: Disturbed forest edge, thickets, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; in scattered areas across North America, where occasionally escaping from cultivation.
Habitat: Disturbed forest edge, thickets, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Linseed (Linum usitatissimum)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and other disturbed areas, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: June-November
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and other disturbed areas, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: June-November
Growth Duration: Annual
Lion's heart (Lallemantia peltata)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent northeastern Oregon and likely western Idaho.
Habitat: Dry slopes, roadsides, fields, and other disturbed open areas.
Origin: Introduced from Asia
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent northeastern Oregon and likely western Idaho.
Habitat: Dry slopes, roadsides, fields, and other disturbed open areas.
Origin: Introduced from Asia
Flowers: May-July
Growth Duration: Perennial
Coastal lip fern (Myriopteris intertexta)
Distribution: Occurring east of the Cascades crest in southeastern Washington; south-central Washington to California, east to Nevada.
Habitat: Rock faces and basalt outcroppings at low elevations.
Origin: Native
Spores: April-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; south-central Washington to California, east to Nevada.
Habitat: Rock faces and basalt outcroppings at low elevations.
Origin: Native
Spores: April-August
Growth Duration: Perennial
Fee's lip fern (Myriopteris gracilis)
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; British Columbia to California, east to the midwestern U.S.
Habitat: Cliff crevices, especially on limestone, foothills to middle elevations in the mountains.
Origin: Native
Growth Duration: Perennial
Lace lip fern (Myriopteris gracillima)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; southern British Columbia to California, east to western Montana, Idaho, Nevada and Utah.
Habitat: Cliffs and rocky slopes from middle elevations to alpine.
Origin: Native
Spores: May-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; southern British Columbia to California, east to western Montana, Idaho, Nevada and Utah.
Habitat: Cliffs and rocky slopes from middle elevations to alpine.
Origin: Native
Spores: May-September
Growth Duration: Perennial
Brook lobelia (Lobelia kalmii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to the northern Great Plains, Great Lakes region, and Atlantic coast.
Habitat: Bogs, ponds and lakeshores, and seeps.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to the northern Great Plains, Great Lakes region, and Atlantic coast.
Habitat: Bogs, ponds and lakeshores, and seeps.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Kalm's lobelia (Lobelia kalmii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to the northern Great Plains, Great Lakes region, and Atlantic coast.
Habitat: Bogs, ponds and lakeshores, and seeps.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to the northern Great Plains, Great Lakes region, and Atlantic coast.
Habitat: Bogs, ponds and lakeshores, and seeps.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Trailing lobelia (Lobelia erinus)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Fields, roadside, wastelots, and other disturbed areas, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Fields, roadside, wastelots, and other disturbed areas, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: Annual
Water lobelia (Lobelia dortmanna)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon; circumboreal.
Habitat: In shallow water at the margins of ponds and lakes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Alaska to Oregon; circumboreal.
Habitat: In shallow water at the margins of ponds and lakes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Boreal locoweed (Oxytropis borealis)
Distribution: Occurring in the Olympic Mountains in Washington; Alaska to California, east to Rocky Mountains, also in eastern Canada.
Habitat: Subalpine and alpine areas.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Olympic Mountains in Washington; Alaska to California, east to Rocky Mountains, also in eastern Canada.
Habitat: Subalpine and alpine areas.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Field locoweed (Oxytropis campestris)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Forest openings and rocky balds from sea-level to the alpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Forest openings and rocky balds from sea-level to the alpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Pendent-pod locoweed (Oxytropis deflexa)
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Atlantic Coast.
Habitat: Montane forest openings and meadows to the subalpine and alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Atlantic Coast.
Habitat: Montane forest openings and meadows to the subalpine and alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Yellow locoweed (Oxytropis campestris)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Forest openings and rocky balds from sea-level to the alpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Forest openings and rocky balds from sea-level to the alpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Black locust (Robinia pseudoacacia)
Distribution: Occurring on both sides of the Cascades crest in Washington; introduced from Alaska to California, east to the Rocky Mountains, native from the Great Plains to eastern North America.
Habitat: Stream and river banks, forest edge, wastelots, abandoned homesteads, and disturbed areas.
Origin: Introduced from central and eastern North America
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; introduced from Alaska to California, east to the Rocky Mountains, native from the Great Plains to eastern North America.
Habitat: Stream and river banks, forest edge, wastelots, abandoned homesteads, and disturbed areas.
Origin: Introduced from central and eastern North America
Flowers: May-June
Growth Duration: Perennial
Bristly locust (Robinia hispida)
Distribution: Occurring in scattered locations on both sides of the Cascades crest; introduced from British Columbia to California, native from the Great Plains to eastern North America.
Habitat: Forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from central and eastern North America
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest; introduced from British Columbia to California, native from the Great Plains to eastern North America.
Habitat: Forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from central and eastern North America
Flowers: May-July
Growth Duration: Perennial
Bigseed lomatium (Lomatium macrocarpum)
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Open, dry, rocky areas at low elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Open, dry, rocky areas at low elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Bradshaw's lomatium (Lomatium bradshawii)
Distribution: Occurring west of the Cascades crest in Clark County in Washington; southwestern Washington to the Willamette Valley near Eugene, Oregon.
Habitat: Wet meadows at low elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Clark County in Washington; southwestern Washington to the Willamette Valley near Eugene, Oregon.
Habitat: Wet meadows at low elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Fern-leaved lomatium (Lomatium dissectum)
Distribution: Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California, disjunct in west-central Idaho.
Habitat: Open areas from the valleys and foothills to middle elevations in the mountains
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; southwestern British Columbia to California, disjunct in west-central Idaho.
Habitat: Open areas from the valleys and foothills to middle elevations in the mountains
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Fern-leaved lomatium (Lomatium multifidum)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains.
Habitat: Open, often rocky slopes and dry meadows, lowlands to low alpine areas.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains.
Habitat: Open, often rocky slopes and dry meadows, lowlands to low alpine areas.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Geyer's lomatium (Lomatium geyeri)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to Washington, east to Idaho.
Habitat: Deeper soil in low to mid-elevations of open, dry areas, and under Ponderosa pine.
Origin: Native
Flowers: March-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to Washington, east to Idaho.
Habitat: Deeper soil in low to mid-elevations of open, dry areas, and under Ponderosa pine.
Origin: Native
Flowers: March-July
Growth Duration: Perennial
Gorman's lomatium (Lomatium gormanii)
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho.
Habitat: Open slopes and scablands in the foothills, valleys and plains, often with sagebrush.
Origin: Native
Flowers: December-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho.
Habitat: Open slopes and scablands in the foothills, valleys and plains, often with sagebrush.
Origin: Native
Flowers: December-May
Growth Duration: Perennial
Hamblen's lomatium (Lomatium farinosum)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to western Idaho, disjunct in Wasco County, Oregon.
Habitat: Rocky slopes and scablands, often on lithosol and with sagebrush.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; central Washington to western Idaho, disjunct in Wasco County, Oregon.
Habitat: Rocky slopes and scablands, often on lithosol and with sagebrush.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Hoover's lomatium (Lomatium lithosolamans)
Distribution: Occurring east of the Cascades crest, where endemic to Kittitas and Yakima counties.
Habitat: Open, rocky, shallow soil on xeric sites at low to middle elevations.
Origin: Native
Flowers: March-April
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where endemic to Kittitas and Yakima counties.
Habitat: Open, rocky, shallow soil on xeric sites at low to middle elevations.
Origin: Native
Flowers: March-April
Growth Duration: Perennial
Klickitat lomatium (Lomatium klickitatense)
Distribution: Occurring east of the Cascades crest in the Columbia River Gorge area in Washington; south-central Washington to adjacent Oregon.
Habitat: Dry to seasonally moist, areas and forest openings at low to middle elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in the Columbia River Gorge area in Washington; south-central Washington to adjacent Oregon.
Habitat: Dry to seasonally moist, areas and forest openings at low to middle elevations.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Lacy lomatium (Lomatium ambiguum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to northeast Oregon, east to southeastern Alberta, western Montana, and Wyoming.
Habitat: Open, often rocky slopes and flats, from the foothills to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Biennial, Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to northeast Oregon, east to southeastern Alberta, western Montana, and Wyoming.
Habitat: Open, often rocky slopes and flats, from the foothills to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Biennial, Perennial
Linear-leaved lomatium (Lomatium linearifolium)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Montana and Wyoming.
Habitat: Open slopes and ridges, from low to middle elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Montana and Wyoming.
Habitat: Open slopes and ridges, from low to middle elevations.
Origin: Native
Flowers: March-May
Growth Duration: Perennial
Smooth lomatium (Lomatium laevigatum)
Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to adjacent Oregon.
Habitat: Crevices is basalt cliffs.
Origin: Native
Flowers: April
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to adjacent Oregon.
Habitat: Crevices is basalt cliffs.
Origin: Native
Flowers: April
Growth Duration: Perennial
Wenatchee Mountain lomatium (Lomatium cuspidatum)
Distribution: Occurring east of the Cascades crest, where endemic to the Wenatchee Mountains of Chelan and Kittitas counties in Washington.
Habitat: Open, rocky slopes, often on serpentine, from middle elevations to the subalpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where endemic to the Wenatchee Mountains of Chelan and Kittitas counties in Washington.
Habitat: Open, rocky slopes, often on serpentine, from middle elevations to the subalpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
London plane (Platanus ×hispanica)
Distribution: Occurring east of the Cascades crest along the Columbia River in Washington; scattered locations from central Washington to California, also in eastern North America.
Habitat: River shorelines and adjacent wet meadows.
Origin: Introduced from cultivation
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest along the Columbia River in Washington; scattered locations from central Washington to California, also in eastern North America.
Habitat: River shorelines and adjacent wet meadows.
Origin: Introduced from cultivation
Flowers: April-June
Growth Duration: Perennial
False loosestrife (Ludwigia hexapetala)
Distribution: Scattered locations throughout Washington; along Columbia River near Portland, OR, introduced in much of North America.
Habitat: Swamps, lakes, and streams.
Origin: Introduced from South America
Flowers: June-August
Growth Duration: Perennial
Distribution: Scattered locations throughout Washington; along Columbia River near Portland, OR, introduced in much of North America.
Habitat: Swamps, lakes, and streams.
Origin: Introduced from South America
Flowers: June-August
Growth Duration: Perennial
Hyssop loosestrife (Lythrum hyssopifolia)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California; also in northeastern North America.
Habitat: Moist, disturbed areas.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California; also in northeastern North America.
Habitat: Moist, disturbed areas.
Origin: Introduced from Europe
Flowers: May-September
Growth Duration: Annual
Purple loosestrife (Lythrum salicaria)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Noxious weed of standing water and wet ground.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Noxious weed of standing water and wet ground.
Origin: Introduced from Europe
Flowers: July-September
Growth Duration: Perennial
Spatula-leaf loosestrife (Lythrum portula)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Habitat: Wetlands, disturbed moist areas.
Origin: Introduced from Europe
Flowers: June-September
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Habitat: Wetlands, disturbed moist areas.
Origin: Introduced from Europe
Flowers: June-September
Growth Duration: Annual
Italian lords and ladies (Arum italicum)
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California; also in scattered location in central and eastern U.S.
Habitat: Forest understory and disturbed locations near urbanized areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California; also in scattered location in central and eastern U.S.
Habitat: Forest understory and disturbed locations near urbanized areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Big lotus (Lotus uliginosus)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California, east to Idaho; east across Canada to Nova Scotia; scattered localities in eastern U.S.
Habitat: Moist to wet disturbed areas, roadsides, abandoned lots, and coastal tidelands.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California, east to Idaho; east across Canada to Nova Scotia; scattered localities in eastern U.S.
Habitat: Moist to wet disturbed areas, roadsides, abandoned lots, and coastal tidelands.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Bird's-beak lousewort (Pedicularis ornithorhynchos)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Washington.
Habitat: Subalpine and alpine meadows.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Washington.
Habitat: Subalpine and alpine meadows.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Bracted lousewort (Pedicularis bracteosa)
Distribution: Widely distributed throughout the mountainous areas of Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Common in open forests at moderate to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Widely distributed throughout the mountainous areas of Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Common in open forests at moderate to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Leafy lousewort (Pedicularis racemosa)
Distribution: Widely distributed across Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Coniferous forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Widely distributed across Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Coniferous forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Mt. Rainier lousewort (Pedicularis rainierensis)
Distribution: Endemic to Mount Rainier National Park area in Washington.
Habitat: Moist alpine meadows.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Endemic to Mount Rainier National Park area in Washington.
Habitat: Moist alpine meadows.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Pretty lousewort (Pedicularis pulchella)
Distribution: Occurring east of the Cascades crest, where known only from Chelan County; also occurring in southwestern Montana, where previously thought to be endemic.
Habitat: Alpine slopes.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where known only from Chelan County; also occurring in southwestern Montana, where previously thought to be endemic.
Habitat: Alpine slopes.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Sickletop lousewort (Pedicularis racemosa)
Distribution: Widely distributed across Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Coniferous forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Widely distributed across Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Coniferous forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
White coiled-beak lousewort (Pedicularis contorta)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Wyoming.
Habitat: Open wooded slopes and drier meadows at high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Wyoming.
Habitat: Open wooded slopes and drier meadows at high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Canby's wild lovage (Ligusticum canbyi)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and western Montana.
Habitat: Wet to somewhat dry soil, from montane forest openings to subalpine and alpine areas.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and western Montana.
Habitat: Wet to somewhat dry soil, from montane forest openings to subalpine and alpine areas.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Celery-leaf wild lovage (Ligusticum apiifolium)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Low elevation woodland slopes, prairies, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Low elevation woodland slopes, prairies, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Gray's lovage (Ligusticum grayi)
Distribution: Widely distributed on both sides of the Cascades crest in the mountainous areas of Washington; northern Washington to California and Nevada, east to Idaho and Montana.
Habitat: Moist or sometimes dry open slopes and drier meadows in subalpine and alpine areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in the mountainous areas of Washington; northern Washington to California and Nevada, east to Idaho and Montana.
Habitat: Moist or sometimes dry open slopes and drier meadows in subalpine and alpine areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Parsely-leaf wild lovage (Ligusticum apiifolium)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Low elevation woodland slopes, prairies, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Low elevation woodland slopes, prairies, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Sheep wild lovage (Ligusticum grayi)
Distribution: Widely distributed on both sides of the Cascades crest in the mountainous areas of Washington; northern Washington to California and Nevada, east to Idaho and Montana.
Habitat: Moist or sometimes dry open slopes and drier meadows in subalpine and alpine areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in the mountainous areas of Washington; northern Washington to California and Nevada, east to Idaho and Montana.
Habitat: Moist or sometimes dry open slopes and drier meadows in subalpine and alpine areas.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Love-in-a-mist (Nigella damascena)
Distribution: Known sparingly in Washington from lowland areas west of Cascades crest; southwestern British Columbia to California, east across northern U.S. to eastern North America.
Habitat: Yard waste dump sites, disturbed open ground, and other sites were plants escape from cultivation.
Origin: Introduced from Eurasia
Flowers: May-September
Growth Duration: Annual
Distribution: Known sparingly in Washington from lowland areas west of Cascades crest; southwestern British Columbia to California, east across northern U.S. to eastern North America.
Habitat: Yard waste dump sites, disturbed open ground, and other sites were plants escape from cultivation.
Origin: Introduced from Eurasia
Flowers: May-September
Growth Duration: Annual
India lovegrass (Eragrostis pilosa)
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Habitat: Disturbed ground, roadsides, and shores.
Origin: Introduced from Eurasia
Flowers: July-October
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Habitat: Disturbed ground, roadsides, and shores.
Origin: Introduced from Eurasia
Flowers: July-October
Growth Duration: Annual
Little lovegrass (Eragrostis minor)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Habitat: Disturbed ground, roadsides, railroads, and shores.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Annual
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Habitat: Disturbed ground, roadsides, railroads, and shores.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Annual
Mexican lovegrass (Eragrostis mexicana)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to Idaho, Coloarado, New Mexico, and Texas; also in scattered locations in eastern North America.
Habitat: Sandy or silty shores, roadsides, ditches, and disturbed ground.
Origin: Introduced from southwestern U.S.
Flowers: July-Octobaer
Growth Duration: Annual
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to Idaho, Coloarado, New Mexico, and Texas; also in scattered locations in eastern North America.
Habitat: Sandy or silty shores, roadsides, ditches, and disturbed ground.
Origin: Introduced from southwestern U.S.
Flowers: July-Octobaer
Growth Duration: Annual
Six-weeks lovegrass (Eragrostis lutescens)
Distribution: Occurring east of the Cascades crest in Washington; eastern Washington to California, east to Colorado and New Mexico.
Habitat: Shores, canyons, moist alkaline flats, and disturbed ground.
Origin: Native
Flowers: July-October
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in Washington; eastern Washington to California, east to Colorado and New Mexico.
Habitat: Shores, canyons, moist alkaline flats, and disturbed ground.
Origin: Native
Flowers: July-October
Growth Duration: Annual
Teal lovegrass (Eragrostis hypnoides)
Distribution: Occurring on both sides of the Cascades crest in Washington and in the Columbia River Gorge. northern Washington to California, east across North America to the Atlantic Coast.
Habitat: Mud flats along streams, ponds and lakes.
Origin: Native
Flowers: June-September
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington and in the Columbia River Gorge. northern Washington to California, east across North America to the Atlantic Coast.
Habitat: Mud flats along streams, ponds and lakes.
Origin: Native
Flowers: June-September
Growth Duration: Annual
Tufted lovegrass (Eragrostis pectinacea)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia, east to the Atlantic Coast.
Habitat: Shores, roadsides, ditches, and disturbed ground.
Origin: Native
Flowers: June-September
Growth Duration: Annual, Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia, east to the Atlantic Coast.
Habitat: Shores, roadsides, ditches, and disturbed ground.
Origin: Native
Flowers: June-September
Growth Duration: Annual, Perennial
Weeping lovegrass (Eragrostis curvula)
Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across the southern U.S. to eastern North America.
Habitat: Distrubed areas where open, and forest edge.
Origin: Introduced from southern Africa
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across the southern U.S. to eastern North America.
Habitat: Distrubed areas where open, and forest edge.
Origin: Introduced from southern Africa
Flowers: June-July
Growth Duration: Perennial
Lucerne (Medicago sativa)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas; often escaping from commercial cultivation.
Origin: Introduced
Flowers: May-October
Growth Duration: Annual, Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas; often escaping from commercial cultivation.
Origin: Introduced
Flowers: May-October
Growth Duration: Annual, Perennial
Luetkea (Luetkea pectinata)
Distribution: Occurring in the Olympic and Cascades mountains in Washington; Alaska to California, east to Northwest Territory, Alberta, Idaho, and Montana.
Habitat: Usually on sandy soil in moist or shady places, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Olympic and Cascades mountains in Washington; Alaska to California, east to Northwest Territory, Alberta, Idaho, and Montana.
Habitat: Usually on sandy soil in moist or shady places, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Littleleaf luina (Luina hypoleuca)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Open, rocky areas, from moist to somewhat dry, at middle to high elevations in the mountains.
Origin: Native
Flowers: June-October
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Open, rocky areas, from moist to somewhat dry, at middle to high elevations in the mountains.
Origin: Native
Flowers: June-October
Growth Duration: Perennial
Silverback luina (Luina hypoleuca)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Open, rocky areas, from moist to somewhat dry, at middle to high elevations in the mountains.
Origin: Native
Flowers: June-October
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Open, rocky areas, from moist to somewhat dry, at middle to high elevations in the mountains.
Origin: Native
Flowers: June-October
Growth Duration: Perennial
Silvercrown luina (Cacaliopsis nardosmia)
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Meadows, forest edge, forest openings, and light forest understory from low to middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Meadows, forest edge, forest openings, and light forest understory from low to middle elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Long-flowered lungwort (Mertensia longiflora)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana and Nevada.
Habitat: Drier areas from low elevation sagebrush deserts to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana and Nevada.
Habitat: Drier areas from low elevation sagebrush deserts to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Big-pod lupine (Lupinus pachylobus)
Distribution: Occurring in San Juan County in Washington; disjunct in the Gulf Islands of Canada and San Juan Islands of Washington, otherwise in California.
Habitat: Rocky balds and dry slopes
Origin: Native?
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring in San Juan County in Washington; disjunct in the Gulf Islands of Canada and San Juan Islands of Washington, otherwise in California.
Habitat: Rocky balds and dry slopes
Origin: Native?
Flowers: April-June
Growth Duration: Annual
Bigleaf lupine (Lupinus polyphyllus)
Distribution: Widely distributed throughout Washington; British Columbia to California, east to Colorado.
Habitat: Moist areas and stream banks, lowlands to subalpine and alpine areas.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Widely distributed throughout Washington; British Columbia to California, east to Colorado.
Habitat: Moist areas and stream banks, lowlands to subalpine and alpine areas.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Bingen lupine (Lupinus sulphureus)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon, possibly east to adjacent Idaho.
Habitat: Shrub-steppe, grassland, and open ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon, possibly east to adjacent Idaho.
Habitat: Shrub-steppe, grassland, and open ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Broadleaf lupine (Lupinus latifolius)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Lowland prairies to subalpine meadows and alpine ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California.
Habitat: Lowland prairies to subalpine meadows and alpine ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Chick lupine (Lupinus microcarpus)
Distribution: Occurring chiefly west of the Cascades in Washington; British Columbia to California.
Habitat: Coastal bluffs, grassy balds, and other dry to moist, open areas at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades in Washington; British Columbia to California.
Habitat: Coastal bluffs, grassy balds, and other dry to moist, open areas at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Field lupine (Lupinus bicolor)
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Kincaid's lupine (Lupinus oreganus)
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to the Willamette Valley in Oregon, also known historically from Vancouver Island.
Habitat: Moist to dry areas of prairies and openings in oak woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to the Willamette Valley in Oregon, also known historically from Vancouver Island.
Habitat: Moist to dry areas of prairies and openings in oak woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Large-leaved lupine (Lupinus polyphyllus)
Distribution: Widely distributed throughout Washington; British Columbia to California, east to Colorado.
Habitat: Moist areas and stream banks, lowlands to subalpine and alpine areas.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Widely distributed throughout Washington; British Columbia to California, east to Colorado.
Habitat: Moist areas and stream banks, lowlands to subalpine and alpine areas.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Longspur lupine (Lupinus arbustus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush deserts and ponderosa pine forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush deserts and ponderosa pine forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Low lupine (Lupinus pusillus)
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush desert, often where sandy.
Origin: Native
Flowers: May-June
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush desert, often where sandy.
Origin: Native
Flowers: May-June
Growth Duration: Annual
Nootka lupine (Lupinus nootkatensis)
Distribution: Reported from northwest area of Washington; Alaska and Yukon Territory to Vancouver Island, British Columbia.
Habitat: Mesic meadows, stream banks, thickets, and forest openings.
Origin: Introduced from British Columbia
Flowers: May-June
Growth Duration: Perennial
Distribution: Reported from northwest area of Washington; Alaska and Yukon Territory to Vancouver Island, British Columbia.
Habitat: Mesic meadows, stream banks, thickets, and forest openings.
Origin: Introduced from British Columbia
Flowers: May-June
Growth Duration: Perennial
Oregon lupine (Lupinus oreganus)
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to the Willamette Valley in Oregon, also known historically from Vancouver Island.
Habitat: Moist to dry areas of prairies and openings in oak woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to the Willamette Valley in Oregon, also known historically from Vancouver Island.
Habitat: Moist to dry areas of prairies and openings in oak woodlands.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Prairie lupine (Lupinus lepidus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Open areas from lowland prairies and sagebrush flats to alpine ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Open areas from lowland prairies and sagebrush flats to alpine ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
River bank lupine (Lupinus rivularis)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Gravelly prairies, open woods and riverbanks at low elevations.
Origin: Native
Flowers: April-September
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Gravelly prairies, open woods and riverbanks at low elevations.
Origin: Native
Flowers: April-September
Growth Duration: Perennial
Rock lupine (Lupinus saxosus)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Mostly on basaltic rimrock in sagebrush desert or pine woodland.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Mostly on basaltic rimrock in sagebrush desert or pine woodland.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Rusty lupine (Lupinus pusillus)
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush desert, often where sandy.
Origin: Native
Flowers: May-June
Growth Duration: Annual
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush desert, often where sandy.
Origin: Native
Flowers: May-June
Growth Duration: Annual
Sabin's lupine (Lupinus sabinianus)
Distribution: Occurring in the Blue Mountains of southeastern Washington; southeastern Washington to adjacent northeastern Oregon.
Habitat: Ponderosa pine forest openings and grasslands at low to moderate elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring in the Blue Mountains of southeastern Washington; southeastern Washington to adjacent northeastern Oregon.
Habitat: Ponderosa pine forest openings and grasslands at low to moderate elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Seashore lupine (Lupinus littoralis)
Distribution: Occurring west of the Cascades crest in the coastal counties of Washington; British Columbia to California.
Habitat: Immediate coastline in dunes and on beaches.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in the coastal counties of Washington; British Columbia to California.
Habitat: Immediate coastline in dunes and on beaches.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Sicklekeel lupine (Lupinus albicaulis)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California, and in western Nevada.
Habitat: Lowland prairies, grasslands, meadows, and open areas.
Origin: Native
Flowers: May-July
Growth Duration: Biennial, Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to California, and in western Nevada.
Habitat: Lowland prairies, grasslands, meadows, and open areas.
Origin: Native
Flowers: May-July
Growth Duration: Biennial, Perennial
Silky lupine (Lupinus sericeus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and Rocky Mountains.
Habitat: Sagebrush deserts to forest openings at moderate elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta and Rocky Mountains.
Habitat: Sagebrush deserts to forest openings at moderate elevations.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Silvery lupine (Lupinus argenteus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush plains, and ponderosa pine forests to subalpine ridges.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Great Plains.
Habitat: Sagebrush plains, and ponderosa pine forests to subalpine ridges.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Small-flowered lupine (Lupinus bicolor)
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Spurred lupine (Lupinus arbustus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush deserts and ponderosa pine forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush deserts and ponderosa pine forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Stream bank lupine (Lupinus rivularis)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Gravelly prairies, open woods and riverbanks at low elevations.
Origin: Native
Flowers: April-September
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Gravelly prairies, open woods and riverbanks at low elevations.
Origin: Native
Flowers: April-September
Growth Duration: Perennial
Sulfur lupine (Lupinus sulphureus)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon, possibly east to adjacent Idaho.
Habitat: Shrub-steppe, grassland, and open ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon, possibly east to adjacent Idaho.
Habitat: Shrub-steppe, grassland, and open ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Tree lupine (Lupinus arboreus)
Distribution: Occurring chiefly west of the Cascades crest in Washington in the lowlands and along the Pacific coast; British Columbia to California.
Habitat: Sandy soil at low elevations, often where disturbed.
Origin: Introduced from California, where native
Flowers: May-September
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington in the lowlands and along the Pacific coast; British Columbia to California.
Habitat: Sandy soil at low elevations, often where disturbed.
Origin: Introduced from California, where native
Flowers: May-September
Growth Duration: Perennial
Two-color lupine (Lupinus bicolor)
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington, but also in the southeastern part of state; British Columbia to California, east to Arizona.
Habitat: Open meadows, grasslands, prairies, and sandy riverbanks at low to moderate elevations.
Origin: Native
Flowers: April-July
Growth Duration: Annual
Velvet lupine (Lupinus leucophyllus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Utah.
Habitat: Sagebrush plains, grasslands, and ponderosa pine forest openings.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Utah.
Habitat: Sagebrush plains, grasslands, and ponderosa pine forest openings.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Yellow bush lupine (Lupinus arboreus)
Distribution: Occurring chiefly west of the Cascades crest in Washington in the lowlands and along the Pacific coast; British Columbia to California.
Habitat: Sandy soil at low elevations, often where disturbed.
Origin: Introduced from California, where native
Flowers: May-September
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington in the lowlands and along the Pacific coast; British Columbia to California.
Habitat: Sandy soil at low elevations, often where disturbed.
Origin: Introduced from California, where native
Flowers: May-September
Growth Duration: Perennial
Beardless lyme grass (Leymus triticoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Mammoth lyme grass (Leymus racemosus)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
