Vascular Plants

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

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Common names beginning with B:
615 common names
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Index to common names:
baby's-breath, baby-blue-eyes, baby-innocence, babystars, balm, balsamroot, bamboo, baneberry, barberry, barley, barnyard-grass, bartsia, basil, basil-thyme, bassia, bay, bayberry, beachgrass, beachweed, beakrush, bean, bean-caper, bearberry, bearbrush, beard, beardgrass, beardtongue, beargrass, bedstraw, bee-plant, bee-thistle, beeblossom, beeplant, beggar-ticks, bell-heather, belladonna, bellflower, bellheather, bells, belvedere, bent, bentgrass, bergamot, bergia, berry, betony, bigsheath-pondweed, bilberry, bindweed, birch, bird's-beak, bird's-foot trefoil, bird's-foot-trefoil, biscuit-root, biscuitroot, bishop's-cap, bistort, bitterbrush, bittercres, bittercress, bitterroot, black-eyed Susan, black-snakeroot, blackberry, blackhaw, blackthorn, bladder-vetch, bladderpod, bladderwort, blanket flower, blazing-star, blazingstar, bleedingheart, blepharipappus, blight, blinks, blue-eyed grass, blue-eyed mary, blue-eyed Mary, blue-eyes, blue-lily, bluebell, bluebell-of-scotland, bluebells, blueberry, Bluebuttons, bluecup, bluecurls, bluegrass, bluestem, bluet, blueweed, bog cotton, bog-orchid, bogmat, boneset, borage, bornweed, bottle, bottlebrush, bouncing-bet, box elder, boxleaf, boykinia, bracken, brackenfern, brake, bramble, breath, breeches, brickellbush, bride's-bonnet, bristlegrass, bristlehead, brodiaea, brome, brookfoam, brooklime, broom, broomrape, broomsedge, browntop, brush, bryony, buck-bean, buckbrush, buckthorn, buckwheat, buffalo-berry, bugbane, bugle, bugleweed, bugloss, bugseed, bulrush, bunchberry, bur, bur-clover, bur-marigold, bur-ragweed, bur-reed, burdock, burnet, burnweed, burrweed, bursage, bush, buttecandle, butter-and-eggs, butterbur, buttercup, butterfly-bush, butterweed, butterwort, button, buttons
False baby's-breath (Galium mollugo)
Distribution: Scattered locations in Washington; British Columbia south to California, east to Montana and Wyoming; widely distributed in east of the Mississippi River.
Habitat: Occurring in disturbed soil, waste ground.
Origin: Introduced
Flowers: May-July
Great Basin baby-blue-eyes (Nemophila breviflora)
Distribution: Chiefly east of the Cascades in Washington; southern British Columbia to south to California, east to Colorado and Montana.
Habitat: Wooded slopes, thickets, and less often in open places, from the foothills to moderate elevations in the mountains.
Origin: Native
Flowers: April-July
Meadow baby-blue-eyes (Nemophila pedunculata)
Distribution: Chiefly west of the Cascades in Washington; southern Vancouver Island, British Columbia, south to Baja California, east to Nevada and Idaho.
Habitat: Moist, open places, like meadows and bottom lands, in the foothills and lowlands, occasionally somewhat higher.
Origin: Native
Flowers: April-June
Snake Canyon baby-blue-eyes (Nemophila kirtleyi)
Origin: Native
Flowers: April - May
Greater baby-innocence (Tonella floribunda)
Distribution: Occurring along the southern border of Washington; Canyon of the Snake River and tributaries; Washington south to Oregon, east to Idaho.
Habitat: Open, often rocky places, at low elevations.
Origin: Native
Flowers: April-June
Lesser baby-innocence (Tonella tenella)
Distribution: Along the Columbia River from the east end of the gorge to the coast, south in the Puget Trough to central California.
Habitat: Fairly moist in open to partly shaded places at low elevations.
Origin: Native
Flowers: March-May
Bicolored babystars (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
True babystars (Leptosiphon minimus)
Distribution: Occurring west of the Cascades crest in Washington in the Puget Trough lowlands; southern Vancouver Island to California.
Habitat: Prairies, balds, and open, grassy, rocky areas near the coast.
Origin: Native
Flowers: May-June
Field balm (Glechoma hederacea)
Distribution: Occurring in locations throughout Washington; introduced thoughout nearly all of North America.
Habitat: Moist woods and thickets, disturbed areas.
Origin: Introduced from Eurasia
Flowers: April-June
Mountain balm (Ceanothus velutinus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, South Dakota, Wyoming, and Colorado.
Habitat: Moist to dry open forests, low to mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Arrowleaf balsamroot (Balsamorhiza sagittata)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Shrub-steppe, grasslands, and other open areas from low to middle elevations.
Origin: Native
Flowers: April-July
Carey's balsamroot (Balsamorhiza careyana)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon.
Habitat: Open places, but not on lithosol, in the plains, foothills, and lower mountains.
Origin: Native
Flowers: March-July
Deltoid balsamroot (Balsamorhiza deltoidea)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Prairies, open slopes, and forest edge at low elevations.
Origin: Native
Flowers: March-July
Hairy balsamroot (Balsamorhiza hookeri)
Distribution: Occurring east of the Cascades crest in central Washington; Washington to California, east to western Montana, southern Idaho, and Nevada.
Habitat: Dry, open areas at low to moderate elevations, usually in lithosol (rocky, cobbly soil).
Origin: Native
Flowers: April-June
Hare's head balsamroot (Balsamorhiza hookeri)
Distribution: Occurring east of the Cascades crest in central Washington; Washington to California, east to western Montana, southern Idaho, and Nevada.
Habitat: Dry, open areas at low to moderate elevations, usually in lithosol (rocky, cobbly soil).
Origin: Native
Flowers: April-June
Hoary balsamroot (Balsamorhiza incana)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent Oregon, east through Idaho to Montana and Wyoming.
Habitat: Mesic meadows and slopes at lower to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
Hooker's balsamroot (Balsamorhiza hookeri)
Distribution: Occurring east of the Cascades crest in central Washington; Washington to California, east to western Montana, southern Idaho, and Nevada.
Habitat: Dry, open areas at low to moderate elevations, usually in lithosol (rocky, cobbly soil).
Origin: Native
Flowers: April-June
Hybrid balsamroot (Balsamorhiza ×bonseri)
Distribution: Local in eastern Washington where Balsamorhiza rosea is found
Habitat: Dry, rocky slopes at low elevation
Origin: Native
Hybrid balsamroot (Balsamorhiza careyana × Balsamorhiza hookeri)
Origin: Native
Hybrid balsamroot (Balsamorhiza hookeri × Balsamorhiza sagittata)
Origin: Native
Puget balsamroot (Balsamorhiza deltoidea)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Prairies, open slopes, and forest edge at low elevations.
Origin: Native
Flowers: March-July
Rosy balsamroot (Balsamorhiza rosea)
Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to northeastern Oregon.
Habitat: Dry, rocky slopes at low elevation.
Origin: Native
Flowers: April-May
Serrrate balsamroot (Balsamorhiza serrata)
Distribution: Occurring east of the Cascades crest in south-central and southeastern Washington; Washington to California, east to Nevada.
Habitat: Rock outcrops and dry, rocky knolls.
Origin: Native
Flowers: April-June
Toothed balsamroot (Balsamorhiza serrata)
Distribution: Occurring east of the Cascades crest in south-central and southeastern Washington; Washington to California, east to Nevada.
Habitat: Rock outcrops and dry, rocky knolls.
Origin: Native
Flowers: April-June
Woolly balsamroot (Balsamorhiza incana)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent Oregon, east through Idaho to Montana and Wyoming.
Habitat: Mesic meadows and slopes at lower to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
Wooly hybrid balsamroot (Balsamorhiza ×tomentosa)
Origin: Native
Wormwood balsamroot (Balsamorhiza ×terebinthacea)
Origin: Native
Broadleaf bamboo (Sasa palmata)
Distribution: Occurring in the Puget Sound lowlands in Washington; also known from Tennessee.
Habitat: Disturbed lowland areas where escaping from cultivation.
Origin: Introduced
Baneberry (Actaea rubra)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Moist woods and streambanks from low elevations to middle elevations in the mountains.
Origin: Native
Flowers: April-July
Common barberry (Berberis vulgaris)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana; also occurring in central and northeastern North America.
Habitat: Dry waste ground, forest understory, and other disturbed sites.
Origin: Introduced
Flowers: April-June
Darwin's barberry (Berberis darwinii)
Distribution: Occasional near the coast in Oregon and California.
Habitat: Prefers high humidity; rarely escapes cultivation
Origin: Introduced
European barberry (Berberis vulgaris)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana; also occurring in central and northeastern North America.
Habitat: Dry waste ground, forest understory, and other disturbed sites.
Origin: Introduced
Flowers: April-June
Japanese barberry (Berberis thunbergii)
Distribution: Sparingly introduced in Washington; escaped throughout central and eastern United States and Canada.
Habitat: Disturbed areas
Origin: Introduced
Flowers: April-May
Wintergreen barberry (Berberis julianae)
Distribution: Occurring in lowlands west of Cascades crest in Washington; also in Mississippi and New York.
Habitat: Disturbed, shrubby areas at low elevations, often where wet or marshy.
Origin: Introduced
Flowers: May-June
Barley (Hordeum vulgare)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Old fields, wasteland, roadsides, and other disturbed areas where escaped from cultivation.
Origin: Introduced
Flowers: May-June
Dwarf barley (Hordeum depressum)
Distribution: Introduced from Vancouver Island, British Columbia, south on both sides of the Cascades to southern California, east to western Idaho.
Habitat: A weed of waste areas, especially where moist.
Origin: Native
Flowers: April - June
Foxtail barley (Hordeum jubatum)
Distribution: Alaska south on both sides of the Cascades to California, east across Canada to the Atlantic Coast, south to Mexico.
Habitat: Common weed of dry to moist soil, from sagebrush desert to grasslands and mountain forests, often abundent in disturbed areas.
Origin: Native
Flowers: June - August
Little barley (Hordeum pusillum)
Distribution: Eastern Washington south to southern California, east to the Atlantic Coast.
Habitat: Grasslands to desert areas, often on saline soils and wasteland.
Origin: Native
Flowers: April - June
Meadow barley (Hordeum brachyantherum)
Distribution: Alaska south to California, east to Montana and Colorado.
Habitat: Ocean beaches to mountain meadows,usually where moist, but also from dry sagebrush desert to rocky ridges.
Origin: Native
Flowers: June - August
Mediterranean barley (Hordeum marinum)
Origin: Introduced
Mouse barley (Hordeum murinum)
Distribution: Uncommon weed in the United States, occasional in southern British Columbia and western Washington.
Habitat: Disturbed soil and wasteland.
Origin: Introduced
Flowers: June - July
Smooth barley (Hordeum murinum)
Distribution: Uncommon weed in the United States, occasional in southern British Columbia and western Washington.
Habitat: Disturbed soil and wasteland.
Origin: Introduced
Flowers: June - July
Wall barley (Hordeum murinum)
Distribution: Uncommon weed in the United States, occasional in southern British Columbia and western Washington.
Habitat: Disturbed soil and wasteland.
Origin: Introduced
Flowers: June - July
American barnyard-grass (Echinochloa muricata)
Origin: Native?
Guleaf barnyard-grass (Echinochloa crus-pavonis)
Origin: Introduced
Red bartsia (Odontites vulgaris)
Origin: Introduced from Eurasia
Wild basil (Clinopodium vulgare)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon, east across North America in scattered states and provinces.
Habitat: Roadsides, grassy areas, forest edges, and other disturbed areas at low elevation.
Origin: Introduced from Europe
Flowers: June-September
Basil-thyme (Ziziphora acinos)
Origin: Introduced
Bassia (Bassia hyssopifolia)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains and Great Plains.
Habitat: Noxious weed of waste areas and irrigated farm land.
Origin: Introduced from Eurasia
Flowers: July-September
California bay (Umbellularia californica)
Origin: Introduced
Pacific bayberry (Morella californica)
Distribution: Occurring west of the Cascades crest along the outer coast in Washington; coastal Vancouver Island, British Columbia to California.
Habitat: Hillsides and sandy areas near the coast.
Origin: Native
Flowers: April-May
American beachgrass (Ammophila breviligulata)
Origin: Introduced
European beachgrass (Ammophila arenaria)
Distribution: Introduced along the Pacific coast from southeast Washington the California.
Habitat: Sandy beaches and dunes.
Origin: Introduced
Flowers: June-August
Silver beachweed (Ambrosia chamissonis)
Distribution: Occurring along the marine coastline beaches in Washington; British Columbia, south along the coast, to California.
Habitat: Common on sandy beaches above high tide level.
Origin: Native
Flowers: June-September
White beakrush (Rhynchospora alba)
Distribution: Alaska to California, east to Idaho, and throughout northeastern United states.
Habitat: Sphagnum bogs and other wet places, lowlands to mid-elevations in the mountains
Origin: Native
Flowers: July - August
Hog's bean (Hyoscyamus niger)
Distribution: Scattered localities on both sides of the Cascades in Washington; widely distributed throughout uNorth America from Alberta to Nevada, east to central and northeastern North America.
Habitat: Roadsides and waste places.
Origin: Introduced from Europe
Flowers: May-August
Syrian bean-caper (Zygophyllum fabago)
Distribution: Occurring east of the Cascades in Washington; Washington south to California, eastward in scattered localities to the Atlantic Coast.
Habitat: Disturbed soil and wasteland.
Origin: Introduced from Old World
Flowers: June-August
Red bearberry (Arctostaphylos uva-ursi)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California east to the Rocky Mountains, also further east across the northern U.S. and Canada to the Atlantic Coast; circumboreal.
Habitat: Coastal bluffs and prairies, rocky balds, dry subalpine meadows, and dry coniferous forest openings.
Origin: Native
Flowers: April-June
Fremont's silk tassel bearbrush (Garrya fremontii)
Distribution: Along the Columbia River in Washington and Oregon; west side of the Cascades in Lane County, Oregon, south and west to the coastal ranges in California.
Habitat: Woodlands and chaparral, low to moderate elevations.
Origin: Native
Flowers: January-May
Aaron's beard (Hypericum calycinum)
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California; also in eastern North America.
Habitat: Roadsides, cliffs, embankments, fields, parks, forest edge, wastelots, and other disturbed areas.
Origin: Introduced from Turkey and Bulgaria
Flowers: May-July
Perennial beardgrassAgropogon lutosus)
Origin: Introduced
Barrett's beardtongue (Penstemon barrettiae)
Distribution: Occurring in the east end of the Columbia River Gorge in Washington; south-central Washington to adjacent north-central Oregon.
Habitat: Woodland openings and rocky slopes at low elevations.
Origin: Native
Flowers: April-May
Blue Mountains beardtongue (Penstemon pennellianus)
Distribution: Occurring east of the Cascades crest in the Blue Mountains of southeastern Washington; southeastern Washington to Blue Mountains in adjacent northeastern Oregon.
Habitat: Open, gravelly and sandy slopes and ridges, sometimes associated with ponderosa pine forest openings, at middle elevations.
Origin: Native
Flowers: May-June
Cardwell's beardtongue (Penstemon cardwellii)
Distribution: Occurring west of the Cascades crest in Washington; southwestern Washington to southwestern Oregon.
Habitat: Open or wooded summits or slopes at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Cascade beardtongue (Penstemon serrulatus)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; southern British Columbia to Oregon.
Habitat: Moist to wet meadows and forest openings, from low elevations to the subalpine.
Origin: Native
Flowers: June-August
Chelan beardtongue (Penstemon pruinosus)
Distribution: Chiefly on the east slope of the Cascades in Washington; British Columbia south to Washington.
Habitat: Open, rocky places from the valleys and plains to moderate elevations in the mountains, and in the scablands in Washington.
Origin: Native
Flowers: May-July
Cliff beardtongue (Penstemon rupicola)
Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California.
Habitat: Rock cliffs and rocky slopes from middle elevations in the mountains to the alpine.
Origin: Native
Flowers: May-August
Egg-leaf beardtongue (Penstemon ovatus)
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia south to northern Oregon.
Habitat: Open woods below 3000 feet in elevation.
Origin: Native
Flowers: May-August
Elegant beardtongue (Penstemon venustus)
Distribution: Occurring east of the Cascades in Washington, especially in the Blue Mountains area; Washington south to California and Utah, east to Idaho.
Habitat: Open, rocky slopes, from the foothills to moderate elevations in the mountains.
Origin: Native
Flowers: May-August
Fine-toothed beardtongue (Penstemon subserratus)
Distribution: Occurring east of the Cascades crest in central Washington from Chelan County south; north-central Washington to north-central Oregon.
Habitat: Open ponderosa pine forest and clearings at low elevations.
Origin: Native
Flowers: May-July
Glaucous beardtongue (Penstemon euglaucus)
Distribution: In Washington from Mt. Adams south; Washington south to central Oregon.
Habitat: Dry, sandy, open or sparsely wooded slopes at moderate elevations to subalpine meadows.
Origin: Native
Flowers: June-September
Lesser yellow beardtongue (Penstemon confertus)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta, Idaho and Montana.
Habitat: Coniferous forest openings and open slopes from low to middle elevations.
Origin: Native
Flowers: May-August
Pennell's beardtongue (Penstemon pennellianus)
Distribution: Occurring east of the Cascades crest in the Blue Mountains of southeastern Washington; southeastern Washington to Blue Mountains in adjacent northeastern Oregon.
Habitat: Open, gravelly and sandy slopes and ridges, sometimes associated with ponderosa pine forest openings, at middle elevations.
Origin: Native
Flowers: May-June
Rockvine beardtongue (Penstemon ellipticus)
Distribution: Southwest Alberta, southeast British Columbia, northern Idaho and northwest Montana.
Habitat: Rocky places at high elevations in the mountains, often on cliffs, ledges, or in rock crevices.
Origin: Native
Flowers: Late June - September
Royal beardtongue (Penstemon speciosus)
Distribution: East of the Cascades in Washington; Washington south to California, east to Nevada and Utah.
Habitat: Dry, open or sparsely wooded areas, often with sagebrush, juniper or ponderosa pine, mostly in the lowlands and foothills.
Origin: Native
Flowers: May-July
Rydberg's beardtongue (Penstemon rydbergii)
Distribution: Occurring east of the Cascades in Washington; Washington south to the Sierras of California, east to northern Wyoming and northern New Mexico.
Habitat: Meadows and moist, open slopes, occasionally on drier slopes with sagebrush, chiefly in the foothills and at moderate elevations in the mountains.
Origin: Native
Flowers: May-July
Subserrate beardtongue (Penstemon subserratus)
Distribution: Occurring east of the Cascades crest in central Washington from Chelan County south; north-central Washington to north-central Oregon.
Habitat: Open ponderosa pine forest and clearings at low elevations.
Origin: Native
Flowers: May-July
Tall beardtongue (Penstemon hesperius)
Distribution: Occurring west of the Cascades crest in southwestern Washington; narrowly distributed from southwestern Washington to northwestern Oregon.
Habitat: Moist, lowland meadows and stream banks.
Origin: Native
Flowers: June-August
Taper-leaved beardtongue (Penstemon attenuatus)
Distribution: Occurring east of the Cascades crest in Washington; southeastern British Columbia to northeastern Oregon, east to western Montana and Wyoming.
Habitat: Dry to moist meadows and woodland slopes from the lowlands to the subalpine.
Origin: Native
Flowers: June-August
Washington beardtongue (Penstemon washingtonensis)
Distribution: Endemic to Chelan and Okanogan counties, Washington.
Habitat: From open slopes and flats at moderate elevations to alpine meadows.
Origin: Native
Flowers: July-August
Whorled beardtongue (Penstemon triphyllus)
Distribution: Occurring chiefly in the southeastern area of Washington; Southeast Washington south to adjacent Oregon and east to adjacent Idaho.
Habitat: Cliff crevices and dry, rocky banks and slopes at low elevations.
Origin: Native
Flowers: May-July
Wilcox's beardtongue (Penstemon wilcoxii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to Oregon, east to Montana.
Habitat: Open or often wooded, sometimes in rocky places, from the foothills to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
Woodland beardtongue (Nothochelone nemorosa)
Distribution: Occurring chiefly west of the Cascades crest and in the Olympic Mountains in Washington; southwestern British Columbia to California.
Habitat: Forest understory at middle elevations to moist forest edge and slopes in the subalpine.
Origin: Native
Flowers: June-August
Beargrass (Xerophyllum tenax)
Distribution: Occurring in the mountainous areas of Washington except in the southeastern region of the State; British Columbia south to California, east to the northern Rocky Mountains.
Habitat: Open woods and clearings, from near sea level on the Olympic Peninsula to high elevations in the Rockies.
Origin: Native
Flowers: May-August
Boreal bedstraw (Galium kamtschaticum)
Distribution: Chiefly west of the Cascades in Washington; Alaska south to Washington, east to eastern North America.
Habitat: Moist, cold coniferous woods.
Origin: Native
Flowers: July-August
Common bedstraw (Galium aparine)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Variety of habitats, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-June
Common marsh bedstraw (Galium palustre)
Distribution: Occurring west of the Cascades crest in Washington; Yukon Territory south to Oregon, and also in Montana; also in central and eastern North America.
Habitat: Disturbed, open areas, often where moist.
Origin: Native
Flowers: July-September
Creeping bedstraw (Galium humifusum)
Origin: Introduced from Mediterranean
Fragrant bedstraw (Galium triflorum)
Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal; widely distributed throughout North America.
Habitat: Moist woods, from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Intermountain bedstraw (Galium serpenticum)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to central Idaho and Nevada.
Habitat: Dry, open, rocky slopes from fairly low to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Lady's bedstraw (Galium verum)
Distribution: In scattered localities west of the Cascades in Washington; widely distributed throughout North America in except along southern border of U.S.
Habitat: Escaping from cultivation to lawns, roadsides, and other open, disturbed areas.
Origin: Introduced
Flowers: May July
Lamarck's bedstraw (Galium divaricatum)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California; also in southeastern U.S.
Habitat: Disturbed areas at low elevation.
Origin: Introduced
Flowers: July-September
Mexican bedstraw (Galium mexicanum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Great Plains in the U.S.
Habitat: Forest openings, meadows, and open hillsides from low to moderate elevations.
Origin: Native
Flowers: June-August
Northern bedstraw (Galium boreale)
Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal; in North America extending south to California, Texas and West Virginia.
Habitat: In a variety of mesic habitats, from sea level to timber line.
Origin: Native
Flowers: June-August
Oregon bedstraw (Galium oreganum)
Distribution: From the Cascade Mountains west in Washington; Washington south to Oregon.
Habitat: Moist woods and meadows, from sea level to 5000 feet in the mountains.
Origin: Native
Flowers: June-August
Piedmont bedstraw (Cruciata pedemontana)
Distribution: Occurring in Washington at scattered locations on both sides of the Cascades; Washington south to Oregon, east to Montana; in central and southeastern regions of the U.S.
Habitat: Disturbed sites, roadsides, waste areas at low elevations.
Origin: Introduced
Flowers: April-June
Small bedstraw (Galium trifidum)
Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal; widely distributed throughout North America.
Habitat: Moist places, from sea level to high elevations in the mountains.
Origin: Native
Flowers: June-September
Spreading bedstraw (Galium humifusum)
Origin: Introduced from Mediterranean
Sweet-scented bedstraw (Galium odoratum)
Distribution: Occurring in a few scattered locations west of the Cascades in Washington; British Columbia south to Oregon; scattered areas of central and eastern North America.
Habitat: Woodlands at low elevations.
Origin: Introduced from Europe
Flowers: May-June
Three-flowered bedstraw (Galium triflorum)
Distribution: Widely distributed on both sides of the Cascades in Washington; circumboreal; widely distributed throughout North America.
Habitat: Moist woods, from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Twin-leaf bedstraw (Galium bifolium)
Distribution: Chiefly east of the Cascade summits in Washington; British Columbia to California, east to Colorado.
Habitat: Moist to rather dry areas, foothills to high elevations in the mountains.
Origin: Native
Flowers: May-August
Yellow spring bedstraw (Galium verum)
Distribution: In scattered localities west of the Cascades in Washington; widely distributed throughout North America in except along southern border of U.S.
Habitat: Escaping from cultivation to lawns, roadsides, and other open, disturbed areas.
Origin: Introduced
Flowers: May July
Guaco Rocky Mountain bee-plant (Peritoma serrulata)
Distribution: East of the Cascades in Washington; widely distributed throughout North America except Alaska and southeastern U.S.
Habitat: Sagebrush deserts and Ponderosa pine forest openings.
Origin: Native
Flowers: June-August
Rocky Mountain bee-plant (Peritoma serrulata)
Distribution: East of the Cascades in Washington; widely distributed throughout North America except Alaska and southeastern U.S.
Habitat: Sagebrush deserts and Ponderosa pine forest openings.
Origin: Native
Flowers: June-August
Bee-thistle (Eryngium articulatum)
Distribution: Occurring east of the Cascades crest along the eastern border of Washington; disjunct in eastern Washington and adjacent Idaho, otherwise southwestern Oregon to California.
Habitat: Low ground along streams and lakes, often where submerged.
Origin: Native
Flowers: July-September
Naked-stemmed beeblossom (Chylismia scapoidea)
Distribution: Occurring east of the Cascades crest in central Washington, where disjunct from the main range of the species; central Oregon to Nevada, east to Montana, Wyoming, Colorado, and New Mexico, disjunct in central Washington.
Habitat: Dry slopes and flats in sagebrush desert.
Origin: Native
Flowers: April-June
Scarlet beeblossom (Oenothera suffrutescens)
Distribution: Reported from Bingen, Washington - unclear as to whether truly native or a garden escape; chiefly east of the Rockies, but crossing into western Montana.
Habitat: Dry, open slopes, chiefly in the sagebrush area.
Origin: Native
Flowers: June - August
Rocky Mountain beeplant (Peritoma serrulata)
Distribution: East of the Cascades in Washington; widely distributed throughout North America except Alaska and southeastern U.S.
Habitat: Sagebrush deserts and Ponderosa pine forest openings.
Origin: Native
Flowers: June-August
Yellow beeplant (Peritoma lutea)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and Nebraska.
Habitat: Sagebrush desert to Ponderosa pine forests.
Origin: Native
Flowers: June-September
Leafy beggar-ticks (Bidens frondosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Shores of ponds, lakes, backwater channels, and other wetland areas at low elevations, often where disturbed.
Origin: Native
Flowers: June-October
Nodding beggar-ticks (Bidens cernua)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Stream banks, pond and lake edges, and other wet places at low elevations.
Origin: Native
Flowers: July-September
Purplestem beggars-ticks (Bidens connata)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana; native from central North America east to the Atlantic Coast.
Habitat: Marshes, shorelines and other wet, sunny areas.
Origin: Introduced from eastern North America
Flowers: August-September
Swamp beggar-ticks (Bidens connata)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana; native from central North America east to the Atlantic Coast.
Habitat: Marshes, shorelines and other wet, sunny areas.
Origin: Introduced from eastern North America
Flowers: August-September
Tall beggar-ticks (Bidens vulgata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across all but the southwestern U.S. to the Atlantic Coast.
Habitat: Streamsides, ponds, lakes, ditches and other moist to wet waste places.
Origin: Introduced from British Columbia
Flowers: July-October
Three-lobed beggar-ticks (Bidens tripartita)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast where native.
Habitat: Wet places, often where disturbed, primarily at low elevations.
Origin: Introduced from Eurasia and eastern North America
Flowers: August-October
Vancouver Island beggar-ticks (Bidens amplissima)
Distribution: Occurring west of the Cascades crest in the northern Puget Trough area in Washington; southwestern British Columbia to King County, Washington.
Habitat: Wetlands, estuaries, pond and stream margins.
Origin: Native
Flowers: July-October
Alaska bell-heather (Harrimanella stelleriana)
Distribution: Alaska to the high Cascades of Washington
Habitat: Rocky slopes and seeps, alpine to subalpine
Origin: Native
Flowers: July - August
Belladonna (Atropa belladonna)
Origin: Introduced
Alaska bellflower (Campanula lasiocarpa)
Distribution: Local in Washington to western Cascades of Puget Trough; Alaska south to Washington, east to Northwest Territories and Alberta.
Habitat: Uncommon in meadows at high elevations in the mountains
Origin: Native
Flowers: July-August
Clustered bellflower (Campanula glomerata)
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; southwestern British Columbia, central Washington, and western Montana.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas.
Origin: Introduced from Eurasia
Flowers: June-July
Creeping bellflower (Campanula rapunculoides)
Distribution: Introduced garden species, often escaping in scattered localities across Washington; British Columbia to Oregon.
Habitat: Moist soil at low elevations
Origin: Introduced
Flowers: June-August
Olympic bellflower (Campanula piperi)
Distribution: Olympic Mountains in Washington; Vancouver Island, British Columbia.
Habitat: Open, rocky areas at high elevations.
Origin: Native
Flowers: July-August
Pale bellflower (Campanula scouleri)
Distribution: Occurring on both sides of the Cascades crest in Washington, but chiefly to the west; Alaska to California.
Habitat: Openings in moist woods, low to moderate elevations.
Origin: Native
Flowers: June-August
Parry's bellflower (Campanula parryi)
Distribution: Local in Olympic and Cascade Mountains of Washington; central and northern Idaho and adjacent Montana.
Habitat: High elevations in the mountains.
Origin: Native
Flowers: July-August
Peach-leaf bellflower (Campanula persicifolia)
Distribution: West of the Cascades in Washington; British Columbia to Oregon and Utah; eastern North America; introduced from Europe.
Habitat: Escaping from cultivation; occurring in moderately moist, disturbed soil.
Origin: Introduced
Flowers: May-August
Rough bellflower (Campanula scabrella)
Distribution: In the Cascades of Washington; Washington south to California, east to Idaho and Montana.
Habitat: Open, rocky areas at high elevations.
Origin: Native
Flowers: June-August
Alaska bellheather (Harrimanella stelleriana)
Distribution: Alaska to the high Cascades of Washington
Habitat: Rocky slopes and seeps, alpine to subalpine
Origin: Native
Flowers: July - August
Bronze bells (Anticlea occidentalis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Wet cliffs, moist meadows and scree, mostly at mid- to high elevations, but down to near sea level in the Olympic Peninsula and the Columbia River Gorge.
Origin: Native
Flowers: June-August
Canterbury bells (Campanula medium)
Distribution: Scattered on both sides of the Cascades crest in Washington; British Columbia to California, and in Montana; also in eastern North America.
Habitat: Open, disturbed areas at low to moderate elevations.
Origin: Introduced
Flowers: May-July
Mission bells (Anticlea occidentalis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Wet cliffs, moist meadows and scree, mostly at mid- to high elevations, but down to near sea level in the Olympic Peninsula and the Columbia River Gorge.
Origin: Native
Flowers: June-August
Mission bells (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
Smith's fairy bells (Prosartes smithii)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Open to dense moist woods at lower elevations.
Origin: Native
Flowers: April-June
Wartberryfairy bells (Prosartes trachycarpa)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to Oregon, east to the Rocky Mountains and Great Plains of the U.S. and Canada, reaching Ontario and Michigan.
Habitat: Wooded slopes, often near streams, and in aspen groves.
Origin: Native
Flowers: May-July
Yellow bells (Fritillaria pudica)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California and Nevada, east to Montana and Utah.
Habitat: Shrub-steppe to mixed coniferous forests, from low to moderate elevations.
Origin: Native
Flowers: March-June
Red belvedere (Bassia scoparia)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia
Flowers: July-September
Alpine bent (Agrostis variabilis)
Origin: Native
Flowers: Late July - September
Alpine bent (Podagrostis humilis)
Origin: Native
Arctic bent (Podagrostis aequivalvis)
Origin: Native
Black bent (Agrostis gigantea)
Distribution: Occurring throughout Washington; found in nearly all parts of North America.
Habitat: Disturbed sites, roadsides, edge of agricultural fields, mostly at low elevations.
Origin: Introduced
Flowers: June-September
Colonial bent (Agrostis capillaris)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely introduced throughout North America.
Habitat: Open, disturbed areas often at low elevations.
Origin: Introduced
Flowers: June-August
Highland bent (Agrostis castellana)
Origin: Introduced
Idaho bent (Agrostis idahoensis)
Origin: Native
Flowers: July - August
Mountain bent (Podagrostis humilis)
Origin: Native
Oregon bent (Agrostis oregonensis)
Origin: Native
Flowers: July - August
Rough bent (Agrostis scabra)
Origin: Native
Flowers: June - August
Seashore bent (Agrostis pallens)
Distribution: Near the coast, Grays Harbor County, Washington south to San Francisco, California.
Habitat: Coastal sand dunes and immediately adjacent woods.
Origin: Native
Flowers: Late June - August
Small-leaf bent (Agrostis microphylla)
Origin: Native
Flowers: May - June
Spiked bent (Agrostis exarata)
Distribution: Widely distributed throughout Washington; Alaska south to California, east to Alberta, Nebraska and Texas.
Habitat: Moist areas, from near sea level to mid-elevations in the mountains.
Origin: Native
Flowers: June-September
Spreading bent (Agrostis stolonifera)
Distribution: Widespread throughout Washington; Alaska south to California; also in Idaho, Utah and Colorado.
Habitat: Wet, disturbed areas that include streambanks, flooded fields, and ditches at low to moderate elevations.
Origin: Introduced?
Flowers: June-September
Thurber's bent (Podagrostis thurberiana)
Origin: Native
Merten's bentgrass (Agrostis mertensii)
Origin: Native
Flowers: July - August
Northern bentgrass (Agrostis mertensii)
Origin: Native
Flowers: July - August
Velvet bentgrass (Agrostis canina)
Origin: Introduced from Eurasia
Wild bergamot (Monarda fistulosa)
Origin: Native
Texas bergia (Bergia texana)
Distribution: East of the Cascades in Washington in a few scattered localities; widely distributed across the United States from Washington to California, east to the Gulf Coast states.
Habitat: Emergent in muddy soils of ponds, lakes, ditches, rivers, and streams.
Origin: Native
Flowers: June-September
Roughfruit berry (Rubus lasiococcus)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia south to California.
Habitat: Moist to dry woods, lowlands to subalpine.
Origin: Native
Flowers: June-August
Marsh betony (Stachys pilosa)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout most of North America except extreme southeastern U.S. and northeastern Canada.
Habitat: Swamps, marshes, wetlands and riparian areas.
Origin: Native
Flowers: June-August
Paul's betony (Veronica officinalis)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Roadsides, fields, balds, prairies, ditches, forest edge, lawns, wastelots, and other disturbed open areas at low to middle elevations.
Origin: Introduced from Europe
Flowers: April-July
Bigsheath-pondweed (Stuckenia vaginata)
Origin: Native
Flowers: Late June - August
Bog bilberry (Vaccinium uliginosum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Nevada, Utah, Wyoming and Montana, east across northern North America to the Atlantic.
Habitat: Bogs and fens from low elevation to subalpine.
Origin: Native
Flowers: June-August
Dwarf bilberry (Vaccinium cespitosum)
Distribution: Widely distributed in the mountainous areas of Washington; Alaska south to California, east to Colorado; across southern Canada and the northern tier of states from Minnesota to Maine.
Habitat: Moist rocky ridges and meadows, mid- to high elevations in the mountains.
Origin: Native
Flowers: May-July
Black bindweed (Fallopia convolvulus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, ditches, wastelots, cultivated fields, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-October
Climbing bindweed (Fallopia convolvulus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, ditches, wastelots, cultivated fields, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-October
Field bindweed (Convolvulus arvensis)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Cultivated fields, roadsides, open areas, and other disturbed sites.
Origin: Introduced from Europe
Flowers: April-October
Hedge bindweed (Calystegia sepium)
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to Oregon, east to the Atlantic Coast.
Habitat: Prairies, balds, forest edge, and other open areas generally at low elevations.
Origin: Native
Flowers: May-September
Hybrid bindweed (Calystegia ×lucana)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Thickets, fields, roadsides, shores, wastelots, and other disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: June-August
Ivy bindweed (Fallopia convolvulus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, ditches, wastelots, cultivated fields, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-October
Large bindweed (Calystegia silvatica)
Distribution: Occurring west of the Cascades crest in lowland western Washington; Washington to California.
Habitat: Roadsides, fields, thickets, forest edge, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-August
Seashore false bindweed (Calystegia soldanella)
Distribution: Occurring west of the Cascades crest along the coast in Washington; British Columbia to San Diego County, California.
Habitat: Coastal beaches and sand dunes, often extending down to the high tide level.
Origin: Native
Flowers: April-September
Bog birch (Betula pumila)
Origin: Native
Canoe birch (Betula papyrifera)
Distribution: Alaska to Oregon, east of the Cascades except in northwest Washington, east to the Atlantic coast
Habitat: Moist, open to dense woods, low to moderate elevations
Origin: Native
Flowers: March - May
Dwarf birch (Betula glandulosa)
Distribution: Alaska south to the Sierra of California, east to Nevada and Colorado, and also to Newfoundland and New York.
Habitat: Stream banks, margins of marshes, lakes and bogs, and on alpine slopes.
Origin: Native
Flowers: Late April - early July
Dwarf birch (Betula pumila)
Origin: Native
European weeping birch (Betula pendula)
Distribution: Occurring in Washington on both sides of the Cascades; Introduced as an ornamental in Washington; occurring in isolated locations in south-central Canada and the eastern U.S.
Habitat: Disturbed areas associated with urban and suburban development where the trees escape from cultivation.
Origin: Introduced
Flowers: April-May
Paper birch (Betula papyrifera)
Distribution: Alaska to Oregon, east of the Cascades except in northwest Washington, east to the Atlantic coast
Habitat: Moist, open to dense woods, low to moderate elevations
Origin: Native
Flowers: March - May
Red birch (Betula occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east in Canada to Ontario, east in the U.S. to the Rocky Mountains and northern Great Plains.
Habitat: Moist areas, streambanks at low elevations.
Origin: Native
Flowers: February-June
Resin birch (Betula glandulosa)
Distribution: Alaska south to the Sierra of California, east to Nevada and Colorado, and also to Newfoundland and New York.
Habitat: Stream banks, margins of marshes, lakes and bogs, and on alpine slopes.
Origin: Native
Flowers: Late April - early July
River birch (Betula occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east in Canada to Ontario, east in the U.S. to the Rocky Mountains and northern Great Plains.
Habitat: Moist areas, streambanks at low elevations.
Origin: Native
Flowers: February-June
Swamp birch (Betula glandulosa)
Distribution: Alaska south to the Sierra of California, east to Nevada and Colorado, and also to Newfoundland and New York.
Habitat: Stream banks, margins of marshes, lakes and bogs, and on alpine slopes.
Origin: Native
Flowers: Late April - early July
Swamp birch (Betula pumila)
Origin: Native
Water birch (Betula occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east in Canada to Ontario, east in the U.S. to the Rocky Mountains and northern Great Plains.
Habitat: Moist areas, streambanks at low elevations.
Origin: Native
Flowers: February-June
Western paper birch (Betula papyrifera)
Distribution: Alaska to Oregon, east of the Cascades except in northwest Washington, east to the Atlantic coast
Habitat: Moist, open to dense woods, low to moderate elevations
Origin: Native
Flowers: March - May
White birch (Betula papyrifera)
Distribution: Alaska to Oregon, east of the Cascades except in northwest Washington, east to the Atlantic coast
Habitat: Moist, open to dense woods, low to moderate elevations
Origin: Native
Flowers: March - May
Yakima bird's-beak (Cordylanthus capitatus)
Distribution: East of the Cascade crest in Washington; Idaho and Montana south to California and Nevada.
Habitat: Dry, open woods and hillsides, often with sagebrush, moderate to mid-elevations.
Origin: Native
Flowers: June-September
American bird's-foot trefoil (Acmispon americanus)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Rocky Mountains, south to Mexico.
Habitat: Chiefly in sandy to rocky, exposed or wooded areas, more common at low elevations
Origin: Native
Flowers: April-September
Bird's-foot trefoil (Lotus corniculatus)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout most of North America.
Habitat: Open, mesic to wet areas, typically where disturbed.
Origin: Introduced
Flowers: May-September
Garden bird's-foot trefoil (Lotus corniculatus)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout most of North America.
Habitat: Open, mesic to wet areas, typically where disturbed.
Origin: Introduced
Flowers: May-September
Large bird's-foot trefoil (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
Narrowleaf bird's-foot trefoil (Lotus tenuis)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Fields, roadsides, wastelots, and other disturbed areas
Origin: Introduced from Eurasia
Flowers: May-July
Nevada bird's-foot trefoil (Acmispon nevadensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Nevada.
Habitat: Open, disturbed areas including road cuts, balds, grasslands, and forest edges at low to moderate elevations.
Origin: Native
Flowers: May-June
Small-flowered bird's-foot trefoil (Acmispon parviflorus)
Distribution: Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Open slopes and sandy flats, seashore into the mountains.
Origin: Native
Flowers: April-September
Meadow bird's-foot-trefoil (Hosackia pinnata)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington, but also in far eastern Washington; southwestern British Columbia to California, also in western Idaho.
Habitat: Moist areas and wetlands, lowland to montane.
Origin: Native
Flowers: May-July
Riverbar bird's-foot-trefoil (Acmispon denticulatus)
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia to California, disjunct in southern Idaho and southwestern Utah.
Habitat: Sandy to rocky soil in open areas at low to moderate elevations.
Origin: Native
Flowers: April-June
Rosy bird's-foot-trefoil (Hosackia rosea)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Moist woods and along streams.
Origin: Native
Flowers: May-July
Seaside bird's-foot-trefoil (Hosackia gracilis)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: On moist soil, from near sea level to lower elevations in the mountains.
Origin: Native
Flowers: May-July
Anomalous biscuit-root (Lomatium anomalum)
Distribution: Occurring east of the Cascades crest in the southeastern counties of Washington; southeastern Washington to eastern Oregon, east to western Idaho and northwestern Montana.
Habitat: Open slopes, usually on clay soils.
Origin: Native
Flowers: April-June
Bare-stemmed biscuit-root (Lomatium nudicaule)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Utah.
Habitat: Dry, open areas, including on lithosols, from lowlands to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Bradshaw's biscuit-root (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
Canby's biscuit-root (Lomatium canbyi)
Distribution: Occurring east of the Cascades crest in Washington chiefly in the Columbia River Basin. central Washington to northeastern Nevada, east to southwestern Idaho.
Habitat: Scablands and sagebrush steppe in rather deep soil.
Origin: Native
Flowers: March-April
Cascade biscuit-root (Lomatium martindalei)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to northern California.
Habitat: Dry meadows and rocky outcroppings from middle elevations to the alpine.
Origin: Native
Flowers: May-September
Common biscuit-root (Lomatium utriculatum)
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Grassy balds, prairies, meadows, and open slopes, often at low elevations.
Origin: Native
Flowers: April-June
Cous biscuit-root (Lomatium cous)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to northeast Nevada, east to Montana and Wyoming.
Habitat: Dry, open, often rocky places often with sagebrush; common at low elevations, occasionally found at higher elevations.
Origin: Native
Flowers: April-July
Fern-leaved biscuit-root (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
Fern-leaved biscuit-root (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
Gumbo biscuit-root (Lomatium leptocarpum)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to southern Oregon, east to western Idaho.
Habitat: Seasonally wet, usually shallow-soil meadows, and micro-depressions in vernally wet, rocky sites, often with clay component.
Origin: Native
Flowers: May-June
Hoover's biscuit-root (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
Hoover's biscuit-root (Lomatium tuberosum)
Distribution: Occurring east of the Cascades crest in central Washington, where endemic to Benton, Grant, Kittitas, and Yakima counties. Scattered locations in Yakima County, Washington, and adjacent counties.
Habitat: Rocky slopes and talus fields at middle elevations .
Origin: Native
Flowers: March-April
Klickitat biscuit-root (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
Knoke's biscuit-root (Lomatium knokei)
Distribution: Occurring east of the Cascades crest, where endemic to Kittitas County.
Habitat: Open, vernally wet, gently sloping meadows of fine-textured clay soils at approximately 1200 meters.
Origin: Native
Flowers: May-June
Leiberg's biscuit-root (Lomatium tenuissimum)
Distribution: Historically occurring east of the Cascades crest along the eastern border of southern Washington; eastern Washington to adjacent western Idaho.
Habitat: Vernally moist meadows with fine-textured soils at low to middle elevations.
Origin: Native
Flowers: April-May
Linear-leaved biscuit-root (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
Narrowfruit biscuit-root (Lomatium brevifolium)
Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; north-central Washington to Hood River and Wasco counties in Oregon.
Habitat: Balds, slopes, and forest openings, often where rocky, from the lowlands to subalpine.
Origin: Native
Flowers: May-July
Nine-leaf biscuit-root (Lomatium simplex)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Montana and Colorado.
Habitat: Moderately dry to moist grasslands and forest openings at low to middle elevations.
Origin: Native
Flowers: March-May
Nine-leaved biscuit-root (Lomatium anomalum)
Distribution: Occurring east of the Cascades crest in the southeastern counties of Washington; southeastern Washington to eastern Oregon, east to western Idaho and northwestern Montana.
Habitat: Open slopes, usually on clay soils.
Origin: Native
Flowers: April-June
Northern biscuit-root (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
Piper's biscuit-root (Lomatium piperi)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to northern California.
Habitat: Sagebrush desert to ponderosa pine forest openings.
Origin: Native
Flowers: April-June
Purple biscuit-root (Lomatium columbianum)
Distribution: Occurring east of the Cascades crest in the south-central and Columbia River Gorge areas in Washington; south-central Washington to Hood River and Wasco counties in Oregon.
Habitat: Open slopes in low elevation valleys to low montane.
Origin: Native
Flowers: March-April
Ribseed biscuit-root (Lomatium tamanitchii)
Distribution: Occurring east of the Cascades crest at the east end of the Columbia River Gorge in Washington, where endemic to Klickitat County.
Habitat: Open slopes and valleys, typically in clay-rich, silicic volcanic ash-derived soils at low elevations.
Origin: Native
Flowers: April-May
Rollins's biscuit-root (Lomatium rollinsii)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to the canyons of the Snake and lower Salmon Rivers in eastern Oregon and western Idaho.
Habitat: Open slopes in grasslands, on rocky or fine-textured, loess-derived soils, from valleys to the montane.
Origin: Native
Flowers: April-May
Rone's biscuit-root (Lomatium roneorum)
Distribution: Occurring east of the Cascades crest, where endemic to Chelan County.
Habitat: Open, rocky slopes in Ponderosa pine forest openings.
Origin: Native
Flowers: April-June
Salmon River biscuit-root (Lomatium salmoniflorum)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to the Snake and Clearwater rivers in Idaho.
Habitat: Dry, open, rocky slopes.
Origin: Native
Flowers: March-May
Sandberg's biscuit-root (Lomatium sandbergii)
Distribution: Occurring east of the Cascades crest in northeastern Washington; southeastern British Columbia to northeastern Washington, east to southeastern Alberta and northwestern Montana.
Habitat: Rocky slopes and ridges at middle elevations.
Origin: Native
Flowers: May-June
Sessile-fruited fern-leaved biscuit-root (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
Short-leaved biscuit-root (Lomatium brevifolium)
Distribution: Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; north-central Washington to Hood River and Wasco counties in Oregon.
Habitat: Balds, slopes, and forest openings, often where rocky, from the lowlands to subalpine.
Origin: Native
Flowers: May-July
Smooth biscuit-root (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
Snake Canyon biscuit-root (Lomatium serpentinum)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to the Hells Canyon area of Oregon and Idaho.
Habitat: Dry, open, often rocky slopes from lowland valleys to the montane.
Origin: Native
Flowers: April-July
Suksdorf's biscuit-root (Lomatium suksdorfii)
Distribution: Occurring east of the Cascades crest in Washington at the east end of the Columbia River Gorge in Klickitat County; south-central Washington to Hood River and Wasco counties in Oregon.
Habitat: Open slopes, forest edge and openings, often where dry, from low to middle elevations.
Origin: Native
Flowers: April-May
Thompson's biscuit-root (Lomatium thompsonii)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Chelan and Kittitas counties.
Habitat: Open, rocky slopes and ponderosa pine forest openings, from low to middle elevations.
Origin: Native
Flowers: May-June
Triternate biscuit-root (Lomatium triternatum)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to Oregon, east to Alberta and western Montana.
Habitat: Open hillsides and slopes, forest edge and opening, typically where dry, from low to middle elevations.
Origin: Native
Flowers: April-July
Umptanum biscuit-root (Lomatium quintuplex)
Distribution: Occurring east of the Cascades crest in central Washington, where endemic to eastern Kittitas County and northeastern Yakima County.
Habitat: Generally in lithosol areas in sagebrush desert.
Origin: Native
Flowers: March-May
Watson's biscuit-root (Lomatium watsonii)
Distribution: Occurring east of the Cascades crest in central and south-central Washington; central Washingotn to Wasco County, Oregon.
Habitat: Open hillsides, often with sagebrush, from valleys to subalpine.
Origin: Native
Flowers: May-July
Wenatchee biscuit-root (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
Wyeth biscuit-root (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
Butterfly bearing biscuit-root (Lomatium papilioniferum)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to Idaho and Nevada.
Habitat: Sagebrush desert and open slopes at low to moderate elevations.
Origin: Native
Flowers: April-June
Angle-leaf bishop's-cap (Ozomelis diversifolia)
Distribution: Occurring from in southern Cascade Mountains from Mt. Adams south in Washington; Washington south to the Trinity Mountains of northwest California.
Habitat: Moist woods and stream banks at moderate to high elevations.
Origin: Native
Flowers: May-June
Feathery bishop's-cap (Pectiantia breweri)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Idaho, and Nevada.
Habitat: Moist mountain valleys and open to wooded slopes, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August
Five-stamen bishop's-cap (Pectiantia pentandra)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains of Canada and the U.S.
Habitat: Wet meadows and moist woods, especially along streams, lowlands to mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Alpine bistort (Bistorta vivipara)
Distribution: Occurring on both sides of the Cascades in northern Washington; Alaska south to Oregon, east to Montana, and south in the Rockies to New Mexico; across Canada to Newfoundland, south to Minnesota and Maine.
Habitat: Damp areas, shady woods, meadows and streambanks at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-September
American bistort (Bistorta bistortoides)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Streambanks and moist or swampy meadows, middle elevations in the mountains to alpine slopes.
Origin: Native
Flowers: May-August
Western bistort (Bistorta bistortoides)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Streambanks and moist or swampy meadows, middle elevations in the mountains to alpine slopes.
Origin: Native
Flowers: May-August
Bitterbrush (Purshia tridentata)
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Sagebrush desert and shrub-steppe to ponderosa pine forests.
Origin: Native
Flowers: April-June
Beautiful bittercres (Cardamine nuttallii)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California.
Habitat: Seasonally moist soils of forest openings to forest understory, from low to moderate elevations.
Origin: Native
Flowers: March-May
Alpine bittercress (Cardamine bellidifolia)
Distribution: Occurring In the Olympics and Cascades mountains in Washington; Alaska to California, east across Canada to far northeastern North America
Habitat: Subalpine to alpine meadows.
Origin: Native
Flowers: June-August
Angled bittercress (Cardamine angulata)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to northern California.
Habitat: Wet ground, especially along stream banks, often in deep woods.
Origin: Native
Flowers: April-June
Brewer's bittercress (Cardamine breweri)
Distribution: Distributed on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains from Montana south to Colorado.
Habitat: Stream margins, wet meadows, pond shores, and other riparian areas.
Origin: Native
Flowers: April-August
Few-seeded bittercress (Cardamine oligosperma)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; Alaska to California, east to the Rocky Mountains.
Habitat: Widespread, but mostly in seasonally wet, open or forested areas.
Origin: Native
Flowers: March-July
Hairy bittercress (Cardamine hirsuta)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; British Columbia to California, east to Idaho and Montana, and throughout much of eastern North America.
Habitat: Disturbed ground at low elevations.
Origin: Introduced from Eurasia
Flowers: March-June
Heart-leaved bittercress (Cardamine cordifolia)
Distribution: Occurring in the Cascades, but not the Olympic Mountains, in Washington; British Columbia south to California, east to Idaho.
Habitat: Mountain stream banks to subalpine meadows.
Origin: Native
Flowers: June-September
Large mountain bittercress (Cardamine cordifolia)
Distribution: Occurring in the Cascades, but not the Olympic Mountains, in Washington; British Columbia south to California, east to Idaho.
Habitat: Mountain stream banks to subalpine meadows.
Origin: Native
Flowers: June-September
Little western bittercress (Cardamine oligosperma)
Distribution: Occurring on both sides of the Cascades crest in Washington, but more common west of the crest; Alaska to California, east to the Rocky Mountains.
Habitat: Widespread, but mostly in seasonally wet, open or forested areas.
Origin: Native
Flowers: March-July
Lyall's bittercress (Cardamine cordifolia)
Distribution: Occurring in the Cascades, but not the Olympic Mountains, in Washington; British Columbia south to California, east to Idaho.
Habitat: Mountain stream banks to subalpine meadows.
Origin: Native
Flowers: June-September
New Zealand bittercress (Cardamine corymbosa)
Origin: Introduced
Pennsylvania bittercress (Cardamine pensylvanica)
Distribution: Widespread on both sides of the Cascades crest in Washington; British Columbia to California, east through the Rockies to the Atlantic Coast.
Habitat: Moist to wet soils, or on the margins of wet areas.
Origin: Native
Flowers: April-July
Quaker bittercress (Cardamine pensylvanica)
Distribution: Widespread on both sides of the Cascades crest in Washington; British Columbia to California, east through the Rockies to the Atlantic Coast.
Habitat: Moist to wet soils, or on the margins of wet areas.
Origin: Native
Flowers: April-July
Round bittercress (Cardamine breweri)
Distribution: Distributed on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains from Montana south to Colorado.
Habitat: Stream margins, wet meadows, pond shores, and other riparian areas.
Origin: Native
Flowers: April-August
Seaside bittercress (Cardamine angulata)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to northern California.
Habitat: Wet ground, especially along stream banks, often in deep woods.
Origin: Native
Flowers: April-June
Siberian bittercress (Cardamine umbellata)
Distribution: Occurring chiefly west of the Cascades crest in northern Washington; Alaska to northern Washington, east to Alberta.
Habitat: Subalpine or alpine cliffs, talus slopes, and wet areas.
Origin: Native
Flowers: June-August
Umbellate bittercress (Cardamine umbellata)
Distribution: Occurring chiefly west of the Cascades crest in northern Washington; Alaska to northern Washington, east to Alberta.
Habitat: Subalpine or alpine cliffs, talus slopes, and wet areas.
Origin: Native
Flowers: June-August
Wavy bittercress (Cardamine flexuosa)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California, also in central and eastern North America.
Habitat: Disturbed ground, often where moist or shaded.
Origin: Introduced from Eurasia
Flowers: April-September
Western bittercress (Cardamine occidentalis)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to California.
Habitat: Muddy ground, lake margins, shallow streams, and wet meadows.
Origin: Native
Flowers: April-July
Wood bittercress (Cardamine occulta)
Origin: Introduced
Bitterroot (Lewisia rediviva)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to Montana, Wyoming, Utah, Colorado, and Arizona.
Habitat: Open gravelly and rocky areas from sagebrush plains to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
Nevada bitterroot (Lewisia nevadensis)
Distribution: Olympic and Cascade Mountains of Washington, south to California.
Habitat: Open, often gravelly, moist to mesic areas at moderate elevations in the mountains to above tree line.
Origin: Native
Flowers: Late May - August
Three leaf bitterroot (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
Black-eyed Susan (Rudbeckia hirta)
Distribution: Occurring in scattered locations on both sides of the Cascades crest; British Columbia to California, east across much of the North America to the Atlantic Coast.
Habitat: Open meadows and disturbed places.
Origin: Introduced from further east in North America
Flowers: June-August
Green-headed black-eyed Susan (Rudbeckia laciniata)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to Washington, otherwise Rocky Mountains east to the Atlantic Coast.
Habitat: Streambanks and other moist, disturbed places.
Origin: Introduced from further east in North America
Flowers: July-September
Showy black-eyed Susan (Rudbeckia alpicola)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
Tall black-eyed Susan (Rudbeckia laciniata)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to Washington, otherwise Rocky Mountains east to the Atlantic Coast.
Habitat: Streambanks and other moist, disturbed places.
Origin: Introduced from further east in North America
Flowers: July-September
Washington showy black-eyed Susan (Rudbeckia alpicola)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
Wenatchee Mountain showy black-eyed Susan (Rudbeckia alpicola)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
Western black-eyed Susan (Rudbeckia occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains.
Habitat: Moist meadows and forest openings at moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Western chocolate black-eyed Susan (Rudbeckia occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains.
Habitat: Moist meadows and forest openings at moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Maryland black-snakeroot (Sanicula marilandica)
Distribution: Occurring east of the Cascades crest in the northeastern counties in Washington; Eastern British Columbia to northeast Washington, east to the Atlantic coast.
Habitat: Moist, low ground, less often on moist, wooded slopes.
Origin: Native
Flowers: May-June
Purple black-snakeroot (Sanicula bipinnatifida)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Habitat: Balds, forest edge, and other open to partially shaded areas at low to moderate elevations.
Origin: Native
Flowers: May-June
Sierran black-snakeroot (Sanicula graveolens)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Wyoming.
Habitat: Common in open woods, balds, and thickets at low to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Allegheny blackberry (Rubus allegheniensis)
Origin: Introduced
Common blackberry (Rubus allegheniensis)
Origin: Introduced
Cut-leaf blackberry (Rubus laciniatus)
Distribution: Introduced chiefly west of the Cascades, British Columbia to California; occasionally east to Idaho
Habitat: Roadsides and disturbed areas, mostly at low elevations
Origin: Introduced
Flowers: June - Early August
Dwarf red blackberry (Rubus pubescens)
Distribution: Occurring in the northeast counties in Washington; widespread throughout the northern half of North America.
Habitat: Stream banks and moist woods to clearings where moderately dry, mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Elm-leaf blackberry (Rubus ulmifolius)
Origin: Introduced
European blackberry (Rubus vestitus)
Distribution: Introduced at scattered locations in the Pacific Northwest.
Habitat: Roadsides and waste ground.
Origin: Introduced
Flowers: April - June
Evergreen blackberry (Rubus laciniatus)
Distribution: Introduced chiefly west of the Cascades, British Columbia to California; occasionally east to Idaho
Habitat: Roadsides and disturbed areas, mostly at low elevations
Origin: Introduced
Flowers: June - Early August
Himalayan blackberry (Rubus armeniacus)
Origin: Introduced
Himalayan blackberry (Rubus bifrons)
Distribution: Occurrng on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, southern Great Plains, and eastern North America.
Habitat: Disturbed areas, riparian zones, and forest edges at low elevations.
Origin: Introduced from Eurasia
Flowers: May-August
Himalayan blackberry (Rubus ulmifolius)
Origin: Introduced
Pacific blackberry (Rubus ursinus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana.
Habitat: Open to fairly dense woodlands, thickets, and balds, sea level to middle elevations in the mountains; common in logged areas.
Origin: Native
Flowers: April-August
Pennsylvania blackberry (Rubus pensilvanicus)
Origin: Introduced
Trailing blackberry (Rubus ursinus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana.
Habitat: Open to fairly dense woodlands, thickets, and balds, sea level to middle elevations in the mountains; common in logged areas.
Origin: Native
Flowers: April-August
Western blackhaw (Viburnum ellipticum)
Distribution: Occurring west of the Cascades crest chiefly along the southern border in Washington; southern Washington to northern California.
Habitat: Thickets, bottom lands, and open woods at low to middle elevations.
Origin: Native
Flowers: May-June
Blackthorn (Prunus spinosa)
Distribution: Introduced and escaping in southeast Washington and adjacent Idaho, also in western Oregon.
Habitat: Moist draws and hillsides.
Origin: Introduced
Flowers: April
Red bladder-vetch (Sphaerophysa salsula)
Distribution: Occurring east of the Cascades in Washington, chiefly in the central part of the state; Washington to California, east to the Great Plains.
Habitat: Alkaline soil at low elevations, often where disturbed.
Origin: Introduced
Flowers: May-July
Columbia bladderpod (Physaria douglasii)
Distribution: British Columbia to northern Oregon, east to Idaho; chiefly near the Columbia and Snake Rivers
Habitat: Common in sagebrush desert, especially near or in juniper or ponderosa pine woodlands.
Origin: Native
Flowers: March-July
Douglas' bladderpod (Physaria douglasii)
Distribution: British Columbia to northern Oregon, east to Idaho; chiefly near the Columbia and Snake Rivers
Habitat: Common in sagebrush desert, especially near or in juniper or ponderosa pine woodlands.
Origin: Native
Flowers: March-July
Western bladderpod (Physaria occidentalis)
Distribution: Occurring east of the Cascades in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Open, rocky slopes at low to moderate elevations.
Origin: Native
Flowers: April-June
Common bladderwort (Utricularia vulgaris)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal
Habitat: Lakes, ponds, swamps, and slow-moving streams.
Origin: Native
Flowers: July-September
Dwarf bladderwort (Utricularia ochroleuca)
Distribution: Known only from Klickitat County in Washington, but likely occurring elsewhere; Alaska to California, east across northern half of North America to Greenland; Eurasia.
Habitat: Ponds and lakes in shallow to somewhat deeper waters.
Origin: Native
Flowers: June-September
Flat-leaved bladderwort (Utricularia intermedia)
Distribution: Occurring on both sides of the Cascades crest in Washington; circumboreal; widely distributed throughout North America except in Central Plains, Gulf Coast, and Southeast.
Habitat: Shallow, standing or slowly moving water.
Origin: Native
Flowers: July-August
Greater bladderwort (Utricularia vulgaris)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal
Habitat: Lakes, ponds, swamps, and slow-moving streams.
Origin: Native
Flowers: July-September
Humped bladderwort (Utricularia gibba)
Distribution: Known from west of the Cascades in Washington; British Columbia south to California; central and eastern North America.
Habitat: Emergent aquatic in lakes and ponds.
Origin: Native
Flowers: June-August
Lesser bladderwort (Utricularia minor)
Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Atlantic Coast north of Virginia.
Habitat: Shallow, standing or slowly moving water.
Origin: Native
Flowers: June-September
Mountain bladderwort (Utricularia intermedia)
Distribution: Occurring on both sides of the Cascades crest in Washington; circumboreal; widely distributed throughout North America except in Central Plains, Gulf Coast, and Southeast.
Habitat: Shallow, standing or slowly moving water.
Origin: Native
Flowers: July-August
Swollen bladderwort (Utricularia inflata)
Distribution: Known from west of the Cascades in Washington; Gulf Coast and southeastern U.S.
Habitat: Emergent aquatic in lakes and ponds.
Origin: Introduced from southeast United States
Flowers: June-September
Swollen-spurred bladderwort (Utricularia gibba)
Distribution: Known from west of the Cascades in Washington; British Columbia south to California; central and eastern North America.
Habitat: Emergent aquatic in lakes and ponds.
Origin: Native
Flowers: June-August
Blanket flower (Gaillardia aristata)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Dry, open areas at low to middle elevations.
Origin: Native
Flowers: May-September
Giant blazing-star (Mentzelia laevicaulis)
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to California, east to Montana and Colorado.
Habitat: Dry, often rocky or gravelly soil, desert valleys to lower mountains.
Origin: Native
Flowers: July-September
Mountain blazing-star (Mentzelia montana)
Origin: Native
White-stem blazingstar (Mentzelia albicaulis)
Distribution: Mostly east of the Cascades in Washington; British Columbia to California, east to Montana and New Mexico.
Habitat: Dry, usually sandy soil in the shrub-steppe to the foothills.
Origin: Native
Flowers: May-July
Pacific bleedingheart (Dicentra formosa)
Distribution: Chiefly west of the Cascades in Washington, occasional on the east slope of the Cascades at mid-elevations; British Columbia south to California.
Habitat: Moist woods, from the coast to mid-elevations in the mountains.
Origin: Native
Flowers: March-July
Blepharipappus (Blepharipappus scaber)
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Idaho and northwest Nevada.
Habitat: Grasslands, open slopes, forest edge, sagebrush desert, and other open areas at low elevations.
Origin: Native
Flowers: April-June
Strawberry blight (Blitum capitatum)
Distribution: In scattered locations in Washington, chiefly east of the Cascades crest; Alaska south to California, east to the Atlantic Coast primarily in the northern half of North America.
Habitat: Weedy native of low to moderate elevations.
Origin: Native
Flowers: June-August
Water blinks (Montia fontana)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho, eastward across northern Canada to eastern North America.
Habitat: Wet places, including meadows, fields, lawns, and vernally moist sites, sometimes aquatic and floating, low to moderate elevations.
Origin: Native
Flowers: March-June
Alaska blue-eyed grass (Sisyrinchium littorale)
Distribution: Occurring west of the Cascades crest in coastal areas in Washington; Alaska to Oregon
Habitat: Coastal moist, sandy or grassy areas, interdunal depressions, edges of streams and lakes
Origin: Native
Flowers: May-July
Idaho blue-eyed grass (Sisyrinchium idahoense)
Distribution: Widely distributed across Washington; British Columbia to California, east to Montana and New Mexico.
Habitat: Vernally wet areas and marshes, near sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-July
Strict blue-eyed grass (Sisyrinchium montanum)
Distribution: Occurring east of the Cascades crest in north-central Washington; Yukon Territory to Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Moist meadows, stream banks, and for openings at low to middle elevations.
Origin: Native
Flowers: May-July
Few-flowered blue-eyed Mary (Collinsia sparsiflora)
Distribution: Chiefly along the Columbia River Gorge in Washington; Washington south to northern Oregon, east to western Idaho.
Habitat: Open slopes and swales.
Origin: Native
Flowers: March-April
Large-flowered blue-eyed Mary (Collinsia grandiflora)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California, east in the Columbia River Gorge.
Habitat: Open, moist to rather dry areas, low to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
Small-flowered blue-eyed Mary (Collinsia parviflora)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California and Colorado, east to Ontario and Michigan.
Habitat: Lowlands to alpine meadows in vernally (springtime) moist areas.
Origin: Native
Flowers: March-July
Baby blue-eyes (Nemophila menziesii)
Distribution: Known in Washington only as a garden escape in King County; southwestern Oregon to southern California.
Habitat: In our area a garden escape to open areas; in its native range found in meadows, roadbanks, and woodland.
Origin: Introduced from California and Oregon
Flowers: May-june
Blue-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
Common bluebell (Hyacinthoides ×massartiana)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to Oregon.
Habitat: Meadows, fields, grassy balds, and other open areas at low elevations.
Origin: Introduced from Europe
Flowers: April-May
Garden bluebell (Hyacinthoides ×massartiana)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to Oregon.
Habitat: Meadows, fields, grassy balds, and other open areas at low elevations.
Origin: Introduced from Europe
Flowers: April-May
Hybrid bluebell (Hyacinthoides ×massartiana)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to Oregon.
Habitat: Meadows, fields, grassy balds, and other open areas at low elevations.
Origin: Introduced from Europe
Flowers: April-May
Bluebell-of-scotland (Campanula rotundifolia)
Distribution: Widely distributed throughout Washington; circumboreal.
Habitat: Open, rocky areas from low elevations to the alpine.
Origin: Native
Flowers: June-September
Beautiful bluebells (Mertensia amoena)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to Montana, south to Wyoming and Utah.
Habitat: Seasonally moist slopes and rocky areas in sagebrush desert.
Origin: Native
Flowers: April-June
Broadleaved bluebells (Mertensia platyphylla)
Distribution: Occurring from the west base of the Cascades Mountains to the coast in Washington; Washington south to Oregon.
Habitat: Stream banks and moist, low woods at lower elevations.
Origin: Native
Flowers: May-July
English bluebells (Hyacinthoides non-scripta)
Origin: Introduced
Long-flowered bluebells (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
Paniculate bluebells (Mertensia paniculata)
Distribution: Alaska to Oregon, east to Montana; also in the Great Lakes region
Habitat: Streambanks and wet meadows at mid-elevations in the mountains
Origin: Native
Flowers: May - August
Sagebrush bluebells (Mertensia amoena)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to Montana, south to Wyoming and Utah.
Habitat: Seasonally moist slopes and rocky areas in sagebrush desert.
Origin: Native
Flowers: April-June
Shade bluebells (Mertensia umbratilis)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Forest openings and seasonally moist areas at low to middle elevations.
Origin: Native
Flowers: April-May
Short-sepaled bluebells (Mertensia brachycalyx)
Origin: Native
Streamside bluebells (Mertensia ciliata)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Stream banks, wet meadows, damp thickets, and wet cliffs, from the foothills to high elevations in the mountains.
Origin: Native
Flowers: June-August
Tall bluebells (Mertensia paniculata)
Distribution: Alaska to Oregon, east to Montana; also in the Great Lakes region
Habitat: Streambanks and wet meadows at mid-elevations in the mountains
Origin: Native
Flowers: May - August
Trumpet bluebells (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
Western bluebells (Mertensia platyphylla)
Distribution: Occurring from the west base of the Cascades Mountains to the coast in Washington; Washington south to Oregon.
Habitat: Stream banks and moist, low woods at lower elevations.
Origin: Native
Flowers: May-July
Alaska blueberry (Vaccinium ovalifolium)
Distribution: Occurring in forested and mountainous areas throughout Washington; Alaska south to Oregon, east to Idaho, and then scattered areas to the Atlantic Coast.
Habitat: Openings in coniferous forests, moderate to fairly high elevations.
Origin: Native
Flowers: May-July
Bog blueberry (Vaccinium uliginosum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Nevada, Utah, Wyoming and Montana, east across northern North America to the Atlantic.
Habitat: Bogs and fens from low elevation to subalpine.
Origin: Native
Flowers: June-August
Cascade blueberry (Vaccinium deliciosum)
Distribution: Ocurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings and mountain meadows, mid- to high elevations.
Origin: Native
Flowers: May-July
Dwarf blueberry (Vaccinium myrtillus)
Distribution: Chiefly east of the Cascades, British Columbia to Oregon, east to Montana, and south in the Rockies to Arizona and New Mexico
Habitat: Forest openings, mid-elevations in the mountains
Origin: Native
Flowers: May - August
High-bush blueberry (Vaccinium corymbosum)
Distribution: Widespread and native in eastern United States; introduced in Washington.
Habitat: Open swamps, sandy margins of ponds and lakes.
Origin: Introduced
Flowers: May - June
Low blueberry (Vaccinium myrtillus)
Distribution: Chiefly east of the Cascades, British Columbia to Oregon, east to Montana, and south in the Rockies to Arizona and New Mexico
Habitat: Forest openings, mid-elevations in the mountains
Origin: Native
Flowers: May - August
Oval-leaf blueberry (Vaccinium ovalifolium)
Distribution: Occurring in forested and mountainous areas throughout Washington; Alaska south to Oregon, east to Idaho, and then scattered areas to the Atlantic Coast.
Habitat: Openings in coniferous forests, moderate to fairly high elevations.
Origin: Native
Flowers: May-July
Rainier blueberry (Vaccinium deliciosum)
Distribution: Ocurring in the Olympic and Cascade Mountains of Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings and mountain meadows, mid- to high elevations.
Origin: Native
Flowers: May-July
Square-twig blueberry (Vaccinium membranaceum)
Distribution: Widely distributed throughout forested and mountainous areas of Washington; British Columbia south to California, east the Rocky Mountains; Ontario and Michigan.
Habitat: Common in dry to moist coniferous forests and open areas, moderate to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Velvet-leaf blueberry (Vaccinium myrtilloides)
Distribution: British Columbia east to Labrador, and in the northern tier of states, Montana to West Virginia; Okanogan County in Washington.
Habitat: Mountain meadows, forest openings, bogs and barrens.
Origin: Native
Flowers: May - June
Bluebuttons (Knautia arvensis)
Origin: Introduced
Common bluecup (Githopsis specularioides)
Distribution: Both sides of the Cascades in Washington; from southern Washington to southern California.
Habitat: Dry, open places in the valleys and foothills.
Origin: Native
Flowers: May-June
Mountain bluecurls (Trichostema oblongum)
Distribution: East of the Cascades in Washington; adjacent Idaho, east through the Columbia River Gorge to the Wilamette Valley of Oregon, and south to California.
Habitat: Moist, open places, often on disturbed soil.
Origin: Native
Flowers: July-August
Alpine bluegrass (Poa alpina)
Origin: Native
Arctic bluegrass (Poa arctica)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Rocky Mountains; circumpolar.
Habitat: Subalpine and alpine areas.
Origin: Native
Flowers: June-August
Asia Minor bluegrass (Polypogon fugax)
Origin: Introduced
Bulbous bluegrass (Poa bulbosa)
Distribution: Both sides of the Cascades in Washington; throughout most of western North America, more scattered in central and eastern North America.
Habitat: Disturbed areas from the coast to midmontane.
Origin: Introduced
Flowers: March-June
Cusick's bluegrass (Poa cusickii)
Distribution: British Columbia south in the Olympics and Cascades to California, east to Saskatchewan and Colorado.
Habitat: Sagebrush plains to alpine meadows and ridges.
Origin: Native
Flowers: June - August
Howell's bluegrass (Poa howellii)
Distribution: Occurring west of the Cascades crest in Washington and in the Columbia River Gorge; southern British Columbia to California.
Habitat: Lowland to montane rocky banks, forested slopes, and disturbed areas.
Origin: Native
Flowers: April-June
Interior bluegrass (Poa interior)
Origin: Native
Kentucky bluegrass (Poa pratensis)
Distribution: Throughout Washington; common throughout temperate world.
Habitat: Moist, distrurbed areas at from the coast to middle elevations.
Origin: Both native and introduced
Flowers: April - October
Narrow-flowered bluegrass (Poa stenantha)
Origin: Native
Sea-bluff bluegrass (Poa unilateralis)
Origin: Native
Weak bluegrass (Poa infirma)
Origin: Introduced
Woodland bluegrass (Poa nemoralis)
Origin: Introduced
Flowers: May - August
Broom bluestem (Schizachyrium scoparium)
Distribution: Alberta east to Quebec, south through most of the United States east of the rockies; sparingly introduced in the Pacific Northwest.
Habitat: Prairies and foothills.
Origin: Native?
Flowers: July - August
Little bluestem (Schizachyrium scoparium)
Distribution: Alberta east to Quebec, south through most of the United States east of the rockies; sparingly introduced in the Pacific Northwest.
Habitat: Prairies and foothills.
Origin: Native?
Flowers: July - August
Mountain bluet (Centaurea montana)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, Idaho, and Utah, also from Great Lakes region to northeastern North America.
Habitat: Roadsides, fields, ditches, shores, wastelots, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: May-August
Blueweed (Helianthus ciliaris)
Distribution: Known historically from east of the Cascades crest in Yakima County, where presumably eliminated by herbicide treatment due to it being a noxious weed; California, east across the southwestern U.S. to the southern Great Plains and Illinois.
Habitat: Disturbed, open ground in sagebrush.
Origin: Introduced
Flowers: June-August
Many-spiked bog cotton (Eriophorum angustifolium)
Distribution: Circumboreal at high latitudes, extending south into Oregon, Colorado and New York.
Habitat: Cold swamps and bogs at moderate to high elevations in the mountains.
Origin: Native
Flowers: July - August
Small northern bog-orchid (Platanthera obtusata)
Distribution: Scattered locations on both sides of the Cascades in Washington; Alaska to Oregon, east to Montana and Colorado, across Canada to Newfoundland.
Habitat: Damp to wet forests at mid-elevations in the mountains.
Origin: Native
Flowers: June-July
Sword bogmat (Wolffiella gladiata)
Origin: Introduced from eastern United States
Western boneset (Ageratina occidentalis)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Utah, and Nevada.
Habitat: Rocky places at various altitudes.
Origin: Native
Flowers: June-August
Borage (Borago officinalis)
Distribution: Introduced at scattered locations in the United States; occasional west of the Cascades in the Pacific Northwest.
Habitat: Waste ground and disturbed soil.
Origin: Introduced from southern Europe
Flowers: April - June
Common borage (Borago officinalis)
Distribution: Introduced at scattered locations in the United States; occasional west of the Cascades in the Pacific Northwest.
Habitat: Waste ground and disturbed soil.
Origin: Introduced from southern Europe
Flowers: April - June
Australian bornweed (Erechtites minimus)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Roadsides, fields, riverbanks, ditches, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Australia
Flowers: June-September
Scent bottle (Platanthera dilatata)
Distribution: Widely distributed through the mountainous and forested areas of Washington; Alaska south to California, east to the Rocky Mountains; also in northeastern in North America.
Habitat: Wet meadows, forest openings, and streambanks from low elevations to the subalpine.
Origin: Native
Flowers: June-September
Bottlebrush (Elymus elymoides)
Distribution: British Columbia south to southern California, east to Alberta and Texas.
Habitat: Dry and rocky to moist habitats, from along the coast to inland desert plains and prairies, and in the mountains to above tree line.
Origin: Native
Flowers: May - July
Bouncing-bet (Saponaria officinalis)
Distribution: Introduced throughout the United States; found on both sides of the Cascades in Washington.
Habitat: Roadsides and waste ground
Origin: Introduced from Europe
Flowers: July - September
Box elder (Acer negundo)
Distribution: Occurring chiefly east of the Cascades in Washington; widely distributed throughout much of North America.
Habitat: Occasionally escapes from cultivation, chiefly in disturbed areas or riparian zones.
Origin: Introduced from eastern North America, escaped from cultivation
Flowers: April-June
Oregon boxleaf (Paxistima myrsinites)
Distribution: Widely distributed on both sides of the Cascades in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Mid-elevations in the mountains, but coastal in the Puget Sound region.
Origin: Native
Flowers: April-June
Greater boykinia (Boykinia intermedia)
Distribution: Occurring on the Olympic Peninsula in Washington; Washington south along the coast to central Oregon.
Habitat: Moist woods, meadows, streambanks, roadside ditches.
Origin: Native
Flowers: June-September
Bracken (Pteridium aquilinum)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal.
Habitat: Common in moist to dry woods, open slopes and disturbed sites
Origin: Native
Spores: Spores April-October
Brackenfern (Pteridium aquilinum)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal.
Habitat: Common in moist to dry woods, open slopes and disturbed sites
Origin: Native
Spores: Spores April-October
Oregon cliff brake (Aspidotis densa)
Distribution: British Columbia to California, east to Idaho and Montana
Habitat: Cliff crevices and moist, rocky slopes, foothills to near timberline, often on serpentine
Origin: Native
Dwarf bramble (Rubus lasiococcus)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia south to California.
Habitat: Moist to dry woods, lowlands to subalpine.
Origin: Native
Flowers: June-August
Snow dwarf bramble (Rubus nivalis)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to southwest Oregon, also in west-central Idaho.
Habitat: Open to deeply shaded, usually moist areas in the mountains at middle elevations.
Origin: Native
Flowers: June-July
Strawberry bramble (Rubus pedatus)
Distribution: Alaska to southern Oregon, east to Idaho and Montana
Habitat: Moist areas, open banks to dense forests, near sea level to timberline
Origin: Native
Flowers: May - Early July
Baby's breath (Gypsophila paniculata)
Distribution: Introduced in the northern half of the United States
Habitat: Noxious weed in eastern Washington and Idaho
Origin: Introduced from Asia
Flowers: June - August
Wool breeches (Hydrophyllum capitatum)
Distribution: Occurring mostly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Moist, open slopes and woodlands, foothills to middle elevations in the mountains.
Origin: Native
Flowers: March-July
Narrow-leaved brickellbush (Brickellia oblongifolia)
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to California east to the Rocky Mountains.
Habitat: Dry, often rocky places from lowland sagebrush desert to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Small-leaved brickellbush (Brickellia microphylla)
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Idaho, Wyoming, Colorado, and Arizona.
Habitat: Dry, rocky foothills, canyons, washes.
Origin: Native
Flowers: August-October
Tasselflower brickellbush (Brickellia grandiflora)
Distribution: Occasional east of the Cascades in Washington and Oregon.
Habitat: Openings in woods at moderate elevations, sometimes in plains.
Origin: Native
Flowers: July-October
Bride's-bonnet (Clintonia uniflora)
Distribution: Occurring in forested areas throughout Washington; Alaska south to California, east to Montana.
Habitat: Moist coniferous forests, from the foothills to fairly high elevations in the mountains
Origin: Native
Flowers: May-July
Hooked bristlegrass (Setaria verticillata)
Distribution: Sparingly introduced in the Pacific Northwest; more common in other parts of the United States.
Habitat: Weed of gardens, irrigated areas and wasteland.
Origin: Introduced from Europe
Flowers: August - September
Italian bristlegrass (Setaria italica)
Origin: Introduced from China
Rough bristlegrass (Setaria verticillata)
Distribution: Sparingly introduced in the Pacific Northwest; more common in other parts of the United States.
Habitat: Weed of gardens, irrigated areas and wasteland.
Origin: Introduced from Europe
Flowers: August - September
Bristlehead (Rigiopappus leptocladus)
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California, east to Idaho and Nevada.
Habitat: Dry, open areas at low elevations; sagebrush and grasslands area
Origin: Native
Flowers: April-June
Bluedick brodiaea (Brodiaea coronaria)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Grasslands, balds, prairies, and open hillsides at low to middle elevations.
Origin: Native
Flowers: May-June
Douglas' brodiaea (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
Harvest brodiaea (Brodiaea coronaria)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Grasslands, balds, prairies, and open hillsides at low to middle elevations.
Origin: Native
Flowers: May-June
Indian Valley brodiaea (Brodiaea rosea)
Origin: Native
White brodiaea (Triteleia hyacinthina)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to Oregon, east to Idaho.
Habitat: Sagebrush deserts and grassy, often rocky areas from low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Alaska brome (Bromus sitchensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Great Plains
Habitat: Dry to moist open areas from lowlands to subalpine.
Origin: Native
Flowers: May-August
Australian brome (Bromus arenarius)
Origin: Introduced
Bald brome (Bromus racemosus)
Origin: Introduced
Chinook brome (Bromus orcuttianus)
Origin: Native
Flowers: July - August
Columbian brome (Bromus vulgaris)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south along the coast to northern California, east to Alberta, Montana and Wyoming.
Habitat: Shaded to open woods or moist to dry banks, from near sea level to mountain meadows and dry, rocky slopes at 6000' elevation.
Origin: Native
Flowers: June-August
Compact brome (Bromus madritensis)
Origin: Introduced
Corn brome (Bromus squarrosus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to Oregon, east in scattered locations to the Atlantic Coast.
Habitat: Open, disturbed areas including fields, meadows, and forest openings.
Origin: Introduced
Flowers: June-July
False brome (Brachypodium sylvaticum)
Distribution: Currently known from Cowlitz county in Washington; British Columbia south to California; also in Virginia.
Habitat: Roadsides and other disturbed, open areas at low elevations.
Origin: Introduced
Flowers: April-June
Fox-tail brome (Bromus rubens)
Distribution: Chiefly east of the Cascades in Washington; central Washington south to California, east to Idaho, Utah and Arizona.
Habitat: Common weed on overgrazed land, waste areas.
Origin: Introduced
Flowers: May-June
Fringed brome (Bromus ciliatus)
Origin: Native
Flowers: July - August
Great brome (Bromus diandrus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, southern Great Plains, and in eastern North America.
Habitat: Grassy balds, prairies, roadsides, wastelots, and other disturbed open areas at low to moderate elevations.
Origin: Introduced from Europe
Flowers: April-June
Japanese brome (Bromus japonicus)
Distribution: East of the Cascades, southern British Columbia to California, east across Canada and most of eastern United States.
Habitat: Sagebrush desert and grasslands to lower mountain forests; often a weed of roadsides and waste land.
Origin: Introduced
Flowers: June - August
Meadow brome (Bromus commutatus)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Waste ground, meadows, roadsides.
Origin: Introduced
Flowers: June-August
Pacific brome (Bromus pacificus)
Distribution: West of the Cascades crest in Washington; Alaska south to Oregon.
Habitat: Meadows and forest openingsat low elevations, often near or along the coast.
Origin: Native
Flowers: May-June
Poverty brome (Bromus sterilis)
Distribution: Southern British Columbia south to California, and in the Rocky Mountains and eastern United States.
Habitat: Roadsides and waste places.
Origin: Introduced
Flowers: May - July
Pumpelly brome (Bromus pumpellianus)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Rocky Mountains.
Habitat: Stream banks, lake shores, sand dunes, meadows, grassy slopes, and roadsides
Origin: Native
Flowers: June-August
Rattlesnake brome (Bromus briziformis)
Distribution: Southern British Columbia south to California, east to Idaho and Montana; occasional in eastern United States.
Habitat: Waste ground, roadsides, and overgrazed areas.
Origin: Introduced
Flowers: Late May - July
Ripgut brome (Bromus diandrus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, southern Great Plains, and in eastern North America.
Habitat: Grassy balds, prairies, roadsides, wastelots, and other disturbed open areas at low to moderate elevations.
Origin: Introduced from Europe
Flowers: April-June
Rye brome (Bromus secalinus)
Distribution: Occurring on both sides of the Cascades in Washington; widely distributed throughout North America.
Habitat: Disturbed, open ground.
Origin: Introduced
Flowers: June-July
Sitka brome (Bromus sitchensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Great Plains
Habitat: Dry to moist open areas from lowlands to subalpine.
Origin: Native
Flowers: May-August
Smooth brome (Bromus inermis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast
Habitat: Roadsides, fields, ditches, meadows, parks, and other disturbed open areas; often planted for hay and soil stabilization.
Origin: Introduced from Eurasia
Flowers: June-August
Suksdorf's brome (Bromus suksdorfii)
Origin: Native
Flowers: July - August
Upright brome (Bromus erectus)
Origin: Introduced
Flowers: June - July
Buttercup-leaf mock brookfoam (Hemieva ranunculifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to northern California, east to Alberta and Montana.
Habitat: Foothills to subalpine slopes, on wet, mossy rocks, often where dry by mid-summer.
Origin: Native
Flowers: May-August
Coastal brookfoam (Boykinia occidentalis)
Distribution: West of the Cascades crest in Washington; British Columbia south to California.
Habitat: Moist woods and along streams, lowlands and along the coast.
Origin: Native
Flowers: June-August
Sierran brookfoam (Boykinia intermedia)
Distribution: Occurring on the Olympic Peninsula in Washington; Washington south along the coast to central Oregon.
Habitat: Moist woods, meadows, streambanks, roadside ditches.
Origin: Native
Flowers: June-September
Violet mock brookfoam (Suksdorfia violacea)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to Oregon, east to Alberta, Montana and Idaho.
Habitat: Vernally moist mossy banks and rock crevices.
Origin: Native
Flowers: March-June
American brooklime (Veronica americana)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Ditches, slow moving streams, oxbows, and other water bodies, from low to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Canary broom (Genista canariensis)
Distribution: Occurring in a few scattered locations east of the Cascades crest in Washington; Washington and California.
Habitat: Disturbed areas including wastelots and roadsides.
Origin: Introduced from Europe
Flowers: April-June
Chaparral broom (Baccharis pilularis)
Distribution: Occurring west of the Cascades crest in southern Washington; Washington to California, also in New Mexico.
Habitat: Coastal dunes, bluffs, and thickets.
Origin: Native
Flowers: August-September
French broom (Cytisus striatus)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California.
Habitat: Disturbed open areas including roadsides and wastelots.
Origin: Introduced from Europe
Flowers: May-June
French broom (Genista monspessulana)
Distribution: Occurring in scattered locations west of the Cascades crest in Washington; southwestern British Columbia to California, also in western Idaho.
Habitat: Waste areas, roadsides, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: June-July
Portuguese broom (Cytisus multiflorus)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Origin: Introduced from Europe
Flowers: May-June
Scot's broom (Cytisus scoparius)
Distribution: Distributed widely throughout much of Washington, especially in lowlands west of the Cascades crest; British Columbia south to California.
Habitat: Widespread noxious weed, usually where somewhat moist.
Origin: Introduced from Europe
Flowers: April-June
White Spanish broom (Cytisus multiflorus)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Origin: Introduced from Europe
Flowers: May-June
California broomrape (Aphyllon californicum)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southwestern British Columbia to Baja California, also east of the Cascades crest in Oregon.
Habitat: Coastal and sub-coastal, or in meadows inland, parasitic on Asteraceae but not on Artemisia tridentata.
Origin: Native
Flowers: April-June
Clustered broomrape (Aphyllon fasciculatum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Great Plains and the Great Lakes region.
Habitat: Dry, open places, valleys to montane, parasitic mainly on Artemisia, Eriogonum, Eriophyllum, Galium, and Phacelia.
Origin: Native
Flowers: May-July
Flat-topped broomrape (Aphyllon corymbosum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and the Canadian Great Plains.
Habitat: Sagebrush desert areas, parasitic mainly on Artemisia tridentata.
Origin: Native
Flowers: May-July
Louisiana broomrape (Aphyllon ludovicianum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to the Rocky Mountains and Great Plains of Canada and the U.S.
Habitat: Dry, open, often sandy areas, parasitic on Artemisia, Chrysopsis, and other woody Asteraceae.
Origin: Native
Flowers: May-July
Pine broomrape (Aphyllon pinorum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington to California, east to northern Idaho, Nevada and New Mexico.
Habitat: Montane coniferous forest, parasitic on Holodiscus.
Origin: Native
Flowers: June-August
Pinewoods broomrape (Aphyllon pinorum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington to California, east to northern Idaho, Nevada and New Mexico.
Habitat: Montane coniferous forest, parasitic on Holodiscus.
Origin: Native
Flowers: June-August
Purple broomrape (Aphyllon purpureum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta and the Rocky Mountains.
Habitat: From lowland to montange, often where open and seasonally moist, parasitic mainly on Asteraceae, Saxifragaceae, Sedum.
Origin: Native
Flowers: April-August
Suksdorf's broomrape (Aphyllon ludovicianum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to the Rocky Mountains and Great Plains of Canada and the U.S.
Habitat: Dry, open, often sandy areas, parasitic on Artemisia, Chrysopsis, and other woody Asteraceae.
Origin: Native
Flowers: May-July
Furrowed broomsedge (Carex pachycarpa)
Origin: Native
Flowers: June - August
Pointed broomsedge (Carex scoparia)
Origin: Native
Flowers: June - July
Dryland browntop (Agrostis castellana)
Origin: Introduced
Coyote brush (Baccharis pilularis)
Distribution: Occurring west of the Cascades crest in southern Washington; Washington to California, also in New Mexico.
Habitat: Coastal dunes, bluffs, and thickets.
Origin: Native
Flowers: August-September
White bryony (Bryonia alba)
Distribution: Occurring in eastern and southeastern Washington; east to Montana, south to Utah.
Habitat: Disturbed areas where escaped from cultivation.
Origin: Introduced
Flowers: May-September
Buck-bean (Menyanthes trifoliata)
Distribution: Widely distributed throughout Washington on both sides of the Cascades; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Bogs, marshes, ponds and lakes in shallow water, from low to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Mountain buck-bean (Thermopsis montana)
Distribution: Occurring on both sides of the Cascades crest in Washington, but only occurring in the far western and eastern counties; British Columbia to California, east to the Rocky Mountains.
Habitat: Sandy, well-drained soil to wet meadowland, low to moderate elevations.
Origin: Native
Flowers: May-July
Common buckbrush (Ceanothus cuneatus)
Origin: Native
Alder-leaf buckthorn (Rhamnus alnifolia)
Distribution: Occurring in the northeast corner of Washington; British Columbia east to Quebec, east of the Cascades to Idaho, Montana and the central Sierra Nevada of California.
Habitat: Moist ground, expecially along streams, at moderate to mid-elevations in the mountains.
Origin: Native
Flowers: June-July
Buckthorn (Frangula purshiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Forest understory and margins from low to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
Common buckthorn (Rhamnus cathartica)
Origin: Introduced
False buckthorn (Frangula purshiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Forest understory and margins from low to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
Narrow-leaf buckthorn (Ceanothus cuneatus)
Origin: Native
Sedge-leaf buckthorn (Ceanothus cuneatus)
Origin: Native
Alpine buckwheat (Eriogonum pyrolifolium)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open, often rocky areas, from middle elevations to the alpine in the mountains.
Origin: Native
Flowers: July-September
Arrow-leaf buckwheat (Eriogonum compositum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho.
Habitat: Dry, open areas, rocky slopes and cliffs from low elevations nearly to the subalpine.
Origin: Native
Flowers: May-July
Bailey's buckwheat (Eriogonum baileyi)
Distribution: Occurring east of the Cascades crest in the central region of Washington; northern Washington to California, east to Idaho and Utah.
Habitat: Sand or gravel flats and slopes, grassland and shrub-steppe, open forest, and washes.
Origin: Native
Flowers: April-June
Bare-stem buckwheat (Eriogonum nudum)
Distribution: Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California and Nevada.
Habitat: Sandy or rocky places from the lowlands to subalpine.
Origin: Native
Flowers: June-August
Basalt desert buckwheat (Eriogonum codium)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Benton County.
Habitat: Volcanic soils in sagebrush along the Columbia River.
Origin: Native
Flowers: May-August
Bractless parsnip-flowered wild buckwheat (Eriogonum heracleoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming and Colorado.
Habitat: Deeper soil of shrub-steppe to ponderosa pine forests and rocky ridges at middle elevation in the mountains.
Origin: Native
Flowers: May-July
Broom buckwheat (Eriogonum vimineum)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush deserts and dry ponderosa pine forest openings; tolerant of dry, disturbed conditions.
Origin: Native
Flowers: June-September
Cushion buckwheat (Eriogonum ovalifolium)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Sagebrush deserts, juniper and ponderosa pine forests, to alpine ridges.
Origin: Native
Flowers: May-August
Douglas's buckwheat (Eriogonum douglasii)
Distribution: Occurring east of the Cascades crest in Washington, chiefly in the central region; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests, often on lithosol.
Origin: Native
Flowers: May-July
Garden buckwheat (Fagopyrum esculentum)
Distribution: Introduced in much of the United States.
Habitat: Roadsides, fields, waste areas; frequently escapes cultivation.
Origin: Introduced
Flowers: June - September
Marum-leaf wild buckwheat (Eriogonum marifolium)
Distribution: Reported from east of the Cascades crest in Washington, but no specimens seen; central Washington to California, east to northwestern Nevada.
Habitat: Gravelly flats in lodgepole and ponderosa pine forests to alpine ridges and talus slopes.
Origin: Native
Flowers: June-August
Mountain buckwheat (Eriogonum marifolium)
Distribution: Reported from east of the Cascades crest in Washington, but no specimens seen; central Washington to California, east to northwestern Nevada.
Habitat: Gravelly flats in lodgepole and ponderosa pine forests to alpine ridges and talus slopes.
Origin: Native
Flowers: June-August
Naked buckwheat (Eriogonum nudum)
Distribution: Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California and Nevada.
Habitat: Sandy or rocky places from the lowlands to subalpine.
Origin: Native
Flowers: June-August
Nodding buckwheat (Eriogonum cernuum)
Distribution: Occurring only in Franklin County, where disjunct from primary range of species; southeastern Oregon and adjacent Idaho to eastern California, also in Rocky Mountains and Great Plains.
Habitat: Sand, gravel or clay slopes and flats, shrub-steppe, and grasslands.
Origin: Native
Flowers: May-June
Northern buckwheat (Eriogonum compositum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho.
Habitat: Dry, open areas, rocky slopes and cliffs from low elevations nearly to the subalpine.
Origin: Native
Flowers: May-July
Oarleaf buckwheat (Eriogonum pyrolifolium)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open, often rocky areas, from middle elevations to the alpine in the mountains.
Origin: Native
Flowers: July-September
Parsnip-flowered buckwheat (Eriogonum heracleoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming and Colorado.
Habitat: Deeper soil of shrub-steppe to ponderosa pine forests and rocky ridges at middle elevation in the mountains.
Origin: Native
Flowers: May-July
Rock buckwheat (Eriogonum sphaerocephalum)
Distribution: East of the Cascades in Washington; Chelan County, Washington south to California and east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests at low elevations.
Origin: Native
Flowers: May-July
Rush buckwheat (Eriogonum elatum)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to southern Idaho and Nevada.
Habitat: Sand and gravel slopes and flats, grasslands, sagebrush desert, ponderosa pine forest openings, and montane ridges.
Origin: Native
Flowers: June-August
Shasta wild buckwheat (Eriogonum pyrolifolium)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open, often rocky areas, from middle elevations to the alpine in the mountains.
Origin: Native
Flowers: July-September
Slender buckwheat (Eriogonum microtheca)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to California, east to the Rocky Mountains.
Habitat: Sandy deserts to lower mountain slopes, chiefly with sagebrush.
Origin: Native
Flowers: June-August
Snow buckwheat (Eriogonum niveum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho.
Habitat: Sagebrush desert, dry ponderosa pine forest openings, in deep or sandy soil.
Origin: Native
Flowers: June-September
Spotted buckwheat (Eriogonum maculatum)
Distribution: Collected once (1884) in Yakima County in Washington and now considered extirpated; southeastern Oregon to southwestern Idaho, south to Baja California, Mexioca and east to New Mexico.
Habitat: Sand, gravel or clay slopes and flats, grassland, and shrub-steppe.
Origin: Native
Flowers: May-June
Strict buckwheat (Eriogonum strictum)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Montana, Idaho, and Nevada.
Habitat: Sandy or rocky soils, sagebrush desert to ponderosa pine forests.
Origin: Native
Flowers: May-July
Sulfur buckwheat (Eriogonum umbellatum)
Distribution: On both sides of the Cascades in Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Sagebrush deserts to alpine rocky ridges.
Origin: Native
Flowers: June-September
Tall buckwheat (Eriogonum elatum)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to southern Idaho and Nevada.
Habitat: Sand and gravel slopes and flats, grasslands, sagebrush desert, ponderosa pine forest openings, and montane ridges.
Origin: Native
Flowers: June-August
Thyme buckwheat (Eriogonum thymoides)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to Oregon, east to Idaho.
Habitat: Sagebrush deserts, dry ponderosa pine forest openings, and open ridges in lower mountains.
Origin: Native
Flowers: April-June
Thyme-leaf wild buckwheat (Eriogonum thymoides)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to Oregon, east to Idaho.
Habitat: Sagebrush deserts, dry ponderosa pine forest openings, and open ridges in lower mountains.
Origin: Native
Flowers: April-June
Umptanum buckwheat (Eriogonum codium)
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Benton County.
Habitat: Volcanic soils in sagebrush along the Columbia River.
Origin: Native
Flowers: May-August
Yellow buckwheat (Eriogonum flavum)
Distribution: Occurring east of the Cascades crest in southeastern Washington; Alaska to northeastern Oregon, east to the northern Great Plains.
Habitat: Open knolls in grasslands to alpine ridges and scree.
Origin: Native
Flowers: June-August
Russet buffalo-berry (Shepherdia canadensis)
Distribution: Both sides of the Cascades in Washington; Alaska to Oregon, east to the Atlantic Coast.
Habitat: Moderately dry, open to wooded areas, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Cut-leaved bugbane (Actaea laciniata)
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to adjacent northwestern Oregon.
Habitat: Moist woods at middle elevations in the mountains.
Origin: Native
Flowers: June-August
False bugbane (Trautvetteria caroliniensis)
Distribution: Widely distributed throughout Washington; British Columbia to California, east to the Rocky Mountains, also in central and southeastern U.S.
Habitat: Moist, open woods and stream banks, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Mt. Hood bugbane (Actaea laciniata)
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to adjacent northwestern Oregon.
Habitat: Moist woods at middle elevations in the mountains.
Origin: Native
Flowers: June-August
Tall bugbane (Actaea elata)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to Oregon.
Habitat: Moist, shady woods at low elevations.
Origin: Native
Flowers: June-August
Wild bugbane (Trautvetteria caroliniensis)
Distribution: Widely distributed throughout Washington; British Columbia to California, east to the Rocky Mountains, also in central and southeastern U.S.
Habitat: Moist, open woods and stream banks, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Carpet bugle (Ajuga reptans)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon, east in scattered locations in Idaho and Montana; widespread in central and eastern North America.
Habitat: Disturbed ground, often in forest understory.
Origin: Introduced from Europe
Flowers: April-June
Northern bugleweed (Lycopus uniflorus)
Distribution: Both sides of the Cascades in Washington; Alaska to Newfoundland, south to northwest California and North Carolina.
Habitat: Stream banks, marshes and peat bogs, mostly in the mountains, but descending to sea level west of the Cascades.
Origin: Native
Flowers: July-September
Annual bugloss (Lycopsis arvensis)
Origin: Introduced from Europe
Common bugloss (Anchusa officinalis)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to Rocky Mountains and northern Great Plains, also from the Great Lakes region to northeastern North America.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas at low elevations.
Origin: Introduced from Mediterranean region
Flowers: May-July
European bugloss (Lycopsis arvensis)
Origin: Introduced from Europe
Italian bugloss (Anchusa azurea)
Distribution: Scattered localities in Washington; British Columbia south to California, scattered localities east of the Cascades to the Atlantic Coast.
Habitat: Disturbed soil.
Origin: Introduced from Old World
Flowers: June-August
Small bugloss (Lycopsis arvensis)
Origin: Introduced from Europe
American bugseed (Corispermum americanum)
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Atlantic Coast.
Habitat: Sandy, open sites, including shorelines, fields and disturbed areas, from low to middle elevations.
Origin: Native
Flowers: July-September
Hairy bugseed (Corispermum villosum)
Origin: Native
Hooker's bugseed (Corispermum hookeri)
Origin: Native
Pacific bugseed (Corispermum pacificum)
Distribution: Occurring along the Lower Columbia River and east of the Cascades in Washington; central Washington south to northern Oregon, e to western Idaho.
Habitat: Roadsides and waste places.
Origin: Native
Flowers: August-October
Pale bugseed (Corispermum pallidum)
Origin: Native
Pallas' bugseed (Corispermum pallasii)
Origin: Introduced
Cottongrass bulrush (Scirpus cyperinus)
Distribution: Newfoundland south to Florida, occasionally west across southern Canada to southeast British Columbia and northern Washington.
Habitat: Wet, low ground.
Origin: Introduced
Flowers: July-August
Eurasian bulrush (Isolepis setacea)
Origin: Introduced
Great bulrush (Schoenoplectus tabernaemontani)
Distribution: Widespread in temperate North America; common throughout the Pacific Northwest, but less so than S. acutus.
Habitat: Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali.
Origin: Native
Flowers: June - August
Hardstem bulrush (Schoenoplectus acutus)
Distribution: Both sides of the Cascades in Washington; throughout all of North America except southeastern U.S.
Habitat: Pond and lake margins, wetland and riparian areas.
Origin: Native
Flowers: May-July
Kukenthal's bulrush (Schoenoplectus ×kuekenthalianus)
Origin: Native
Nevada bulrush (Amphiscirpus nevadensis)
Origin: Native
Olney's three-square bulrush (Schoenoplectus americanus)
Origin: Native
Pale bulrush (Scirpus pallidus)
Distribution: Southest Washington and northeast Oregon, east to Utah, Minnisota and Texas.
Habitat: Wet, low ground, from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June - August
Panicled bulrush (Scirpus microcarpus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east in Canada and northern United States to New England.
Habitat: Wet ground, ditches, shorelines, streambanks, and other riparian areas from low to moderate elevations in the mountains
Origin: Native
Flowers: June-August
Ricefield bulrush (Schoenoplectus mucronatus)
Origin: Introduced
River bulrush (Bolboschoenus fluviatilis)
Origin: Native
Rocky Mountain bulrush (Schoenoplectus saximontanus)
Origin: Native
Rough-seed bulrush (Schoenoplectus mucronatus)
Origin: Introduced
Seacoast tuberous bulrush (Bolboschoenus maritimus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America; cosmopolitan.
Habitat: Salt marshes, wet meadows, and margins of ponds, especially in alkaline or saline areas.
Origin: Native
Flowers: June-September
Slender bulrush (Schoenoplectus heterochaetus)
Origin: Native
Small fruited bulrush (Scirpus microcarpus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east in Canada and northern United States to New England.
Habitat: Wet ground, ditches, shorelines, streambanks, and other riparian areas from low to moderate elevations in the mountains
Origin: Native
Flowers: June-August
Soft-stem bulrush (Schoenoplectus tabernaemontani)
Distribution: Widespread in temperate North America; common throughout the Pacific Northwest, but less so than S. acutus.
Habitat: Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali.
Origin: Native
Flowers: June - August
Stream bank bulrush (Schoenoplectus triqueter)
Distribution: Occurring west of the Cascades crest in Washington in the lower Columbia River; southwestern Washington to adjacent northwestern Oregon.
Habitat: Freshwater intertidal zone.
Origin: Introduced from Eurasia
Flowers: July-September
Viscous bulrush (Schoenoplectus acutus)
Distribution: Both sides of the Cascades in Washington; throughout all of North America except southeastern U.S.
Habitat: Pond and lake margins, wetland and riparian areas.
Origin: Native
Flowers: May-July
Bunchberry (Cornus canadensis)
Distribution: Occurring east of the Cascades crest in northeastern Washington; northeastern Washington to the Great Lakes region and northeastern North America; Greenland.
Habitat: Moist forest understory.
Origin: Native
Flowers: May-July
Western bunchberry (Cornus unalaschkensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to northern California, east to western Montana.
Habitat: Moist woods, low elevations to the subalpine.
Origin: Native
Flowers: June-August
Beach bur (Ambrosia chamissonis)
Distribution: Occurring along the marine coastline beaches in Washington; British Columbia, south along the coast, to California.
Habitat: Common on sandy beaches above high tide level.
Origin: Native
Flowers: June-September
Buffalo bur (Solanum rostratum)
Distribution: Widely distributed throughout Washington, where it is considered a noxious weed; widely distributed throughout North America.
Habitat: Roadsides and other disturbed areas, often where dry.
Origin: Introduced from central US
Flowers: June-September
Cutleaf beach bur (Ambrosia chamissonis)
Distribution: Occurring along the marine coastline beaches in Washington; British Columbia, south along the coast, to California.
Habitat: Common on sandy beaches above high tide level.
Origin: Native
Flowers: June-September
Bur-clover (Medicago polymorpha)
Distribution: Occurring chiefly west of the Cascades crest in Washington; southwestern British Columbia to California, scattered eastward across much of North America.
Habitat: Waste ground and disturbed areas, mostly at low elevations.
Origin: Introduced
Flowers: March-June
Little bur-clover (Medicago minima)
Distribution: Occurring in the east end of the Columbia River Gorge in Washington; Washington to California, east along the southern U.S. to eastern North America, also in the Hells Canyon area in Idaho.
Habitat: Roadsides, wastelots, and other disturbed, open areas.
Origin: Introduced from Eurasia
Flowers: March-June
Bur-marigold (Bidens cernua)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Stream banks, pond and lake edges, and other wet places at low elevations.
Origin: Native
Flowers: July-September
Flat spine bur-ragweed (Ambrosia acanthicarpa)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Great Plains.
Habitat: Sandy soils, dunes, and other well-drained soils in open areas at low to middle elevations, often locally common.
Origin: Native
Flowers: July-October
Silver bur-ragweed (Ambrosia chamissonis)
Distribution: Occurring along the marine coastline beaches in Washington; British Columbia, south along the coast, to California.
Habitat: Common on sandy beaches above high tide level.
Origin: Native
Flowers: June-September
Arctic bur-reed (Sparganium natans)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, across the northern half of North America to the Atlantic Coast.
Habitat: Shallow water, mostly in mountain lakes, sometimes completely submersed.
Origin: Native
Flowers: July-August
Broadfruited bur-reed (Sparganium eurycarpum)
Distribution: British Columbia to Baja, California, east to Newfoundland and Florida.
Habitat: Wet meadows to shallow marshes, mostly emersed.
Origin: Native
Flowers: May - October
Floating bur-reed (Sparganium angustifolium)
Distribution: Widely distributed in much of Washington; Alaska south to California, east to the Rocky Mountain states.
Habitat: Ponds and shallow lakes at moderate elevations in the mountains.
Origin: Native
Flowers: July-September
Floating bur-reed (Sparganium fluctuans)
Origin: Native
Narrow-leaved bur-reed (Sparganium angustifolium)
Distribution: Widely distributed in much of Washington; Alaska south to California, east to the Rocky Mountain states.
Habitat: Ponds and shallow lakes at moderate elevations in the mountains.
Origin: Native
Flowers: July-September
Simplestem bur-reed (Sparganium emersum)
Distribution: Alaska south to California, east to Colorado.
Habitat: Shallow ponds and marshes.
Origin: Native
Flowers: June - September
Small bur-reed (Sparganium natans)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, across the northern half of North America to the Atlantic Coast.
Habitat: Shallow water, mostly in mountain lakes, sometimes completely submersed.
Origin: Native
Flowers: July-August
Water bur-reed (Sparganium fluctuans)
Origin: Native
Common burdock (Arctium minus)
Distribution: Occurring on both sides of the Cascades crest in Washington; British to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas at low to middle elevations.
Origin: Introduced
Flowers: July-October
Great burdock (Arctium lappa)
Distribution: Known from a few scattered locations in Washington; British Columbia to California, in Montana, east from California to Colorado and Arizona, also across Canadian Great Plains to Great Lakes region and northeastern North America.
Habitat: Roadsides, ditches, forest openings and edge, wastelots, and other disturbed areas generally at low elevations.
Origin: Introduced from Eurasia
Flowers: August-October
Greater burdock (Arctium lappa)
Distribution: Known from a few scattered locations in Washington; British Columbia to California, in Montana, east from California to Colorado and Arizona, also across Canadian Great Plains to Great Lakes region and northeastern North America.
Habitat: Roadsides, ditches, forest openings and edge, wastelots, and other disturbed areas generally at low elevations.
Origin: Introduced from Eurasia
Flowers: August-October
Lesser burdock (Arctium minus)
Distribution: Occurring on both sides of the Cascades crest in Washington; British to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas at low to middle elevations.
Origin: Introduced
Flowers: July-October
Annual burnet (Poteridium annuum)
Origin: Introduced
Fodder burnet (Poterium sanguisorba)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, shores, pastures, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: June-August
Garden burnet (Sanguisorba officinalis)
Distribution: Alaka to northwest California, chiefly along the coast, inland to Mt. Hood, Oregon, where up to 5000 feet.
Habitat: Muskeg, swamps, and bogs.
Origin: Native
Flowers: July - August
Great burnet (Sanguisorba officinalis)
Distribution: Alaka to northwest California, chiefly along the coast, inland to Mt. Hood, Oregon, where up to 5000 feet.
Habitat: Muskeg, swamps, and bogs.
Origin: Native
Flowers: July - August
Menzies' burnet (Sanguisorba menziesii)
Origin: Native
Flowers: July - August
Prairie burnet (Poteridium annuum)
Origin: Introduced
Sitka burnet (Sanguisorba stipulata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to Oregon, east to Idaho in the west, and Illimois to Maine, south to Alabama in the east.
Habitat: Wet places at mid-elevations in the mountains.
Origin: Native
Flowers: July-August
Small burnet (Poterium sanguisorba)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, shores, pastures, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: June-August
Small-head burnet (Sanguisorba menziesii)
Origin: Native
Flowers: July - August
Toothed coast burnweed (Erechtites minimus)
Distribution: Occurring west of the Cascades crest in Washington; Washington to California.
Habitat: Roadsides, fields, riverbanks, ditches, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Australia
Flowers: June-September
Lawn burrweed (Soliva sessilis)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California, also in south-central and southeastern U.S.
Habitat: Disturbed areas, roadsides, and lawn areas at low elevations.
Origin: Introduced from South America
Flowers: March-June
Annual bursage (Ambrosia acanthicarpa)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Great Plains.
Habitat: Sandy soils, dunes, and other well-drained soils in open areas at low to middle elevations, often locally common.
Origin: Native
Flowers: July-October
Burning bush (Euonymus occidentalis)
Distribution: Uncommon, west of the Cascades in southwestern Washington; British Columbia south to California.
Habitat: Moist woods.
Origin: Native
Flowers: May-June
Buttecandle (Oreocarya glomerata)
Distribution: Chiefly east of the Cascades, from southern British Colombia to Grant County, Oregon, east to North Dakota.
Habitat: Dry, open places in the valleys, plains and foothills, occasionally higher.
Origin: Native
Flowers: April - July
Butter-and-eggs (Triphysaria eriantha)
Origin: Introduced as waif and/or cultivar from CA; occurrence based on records from late 1800s; no recent records or evidence of establishment in WA
Greater butter-and-eggs (Linaria vulgaris)
Distribution: Widely distributed across Washington; widely distributed throughout North America.
Habitat: Noxious weed of roadsides, wastelots, and disturbed areas.
Origin: Introduced from Europe
Flowers: June-September
Alpine butterbur (Petasites frigidus)
Distribution: Occurring in forested and mountainous areas throughout Washington; Alaska to California, east across the northern half of North America to the Atlantic Coast; circumboreal.
Habitat: Meadows, swamps, and other wet places, from low elevations to the alpine.
Origin: Native
Flowers: March-August
Alkali buttercup (Halerpestes cymbalaria)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America except southern and southeastern regions of U.S.
Habitat: Ditches, marshes and muddy meadowlands, often where saline or alkaline.
Origin: Native
Flowers: May-August
Arctic buttercup (Ranunculus grayi)
Distribution: Olympic and Cascade mountains in Washington; scattered from Alaska south to Colorado in the Rocky Mountains.
Habitat: Alpine.
Origin: Native
Flowers: June-August
Blister buttercup (Ranunculus sceleratus)
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.
Habitat: Moist meadows and boggy shoreland to semi-aquatic and often brackish areas.
Origin: Native
Flowers: May-September
Bulbous buttercup (Ranunculus bulbosus)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California, also widespread in eastern North America.
Habitat: Disturbed open areas at low elevation.
Origin: Introduced from Europe
Flowers: May-June
California buttercup (Ranunculus californicus)
Distribution: Occurring along the northwest coast in Washington British Columbia to California.
Habitat: Grassy bluffs along the coast.
Origin: Native
Flowers: April-June
Celery-leaved buttercup (Ranunculus sceleratus)
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.
Habitat: Moist meadows and boggy shoreland to semi-aquatic and often brackish areas.
Origin: Native
Flowers: May-September
Cooley's buttercup (Arcteranthis cooleyae)
Distribution: Alaska and the Cascades of British Columbia, known in Washington from Mt. Colonel Bob in the Olympics and Del Campo Peak Snohomish county.
Habitat: Damp slopes and rocky crevices at high elevations, blossoming as snow recedes.
Origin: Native
Flowers: June-August
Creeping buttercup (Ranunculus flammula)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; widely distributed throughout much of North America except in the southern U.S.
Habitat: Mostly in mud, often where brackish, from sea level to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Creeping buttercup (Ranunculus repens)
Distribution: Occurring throughout Washington, but more common west of the Cascades crest; Alaska to California and Utah, and from central plains of U.S. to Labrador.
Habitat: Wet meadows and fields, riparian corridors disturbed forest understory, lawns, and other disturbed areas where often moist.
Origin: Introduced from Europe
Flowers: April-August
Downy buttercup (Ranunculus hebecarpus)
Distribution: Occurring east of the Cascades crest in Washington; eastern Washington and adjacent Idaho, south to Baja California and east to Arizona.
Habitat: Moist to rather dry hillsides and woodlands.
Origin: Native
Flowers: March-May
Dwarf buttercup (Ranunculus pygmaeus)
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to Washington, Idaho and the Rocky Mountains, east across northern Canada to Greenland, and Europe.
Habitat: Alpine meadows and rock crevices, generally near snowbanks.
Origin: Native
Flowers: June-August
Field buttercup (Ranunculus arvensis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Utah; also in areas of central and eastern U.S.
Habitat: Dry woodlands and waste ground.
Origin: Introduced from Europe
Flowers: May-June
Gmelin's buttercup (Ranunculus gmelinii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to Nevada, east to the Rocky Mountains, and across Canada to the Atlantic Coast.
Habitat: Standing water up to 2 meters deep.
Origin: Native
Flowers: May-September
Graceful buttercup (Ranunculus inamoenus)
Distribution: Occurring in northeastern Washington; British Columbia to Nevada and Arizona, east to Montana, Wyoming, Colorado and New Mexico, also in scattered areas of the northern Great Plains.
Habitat: Mountain meadows and moist slopes.
Origin: Native
Flowers: June-July
Hairy buttercup (Ranunculus sardous)
Distribution: Occurring west of the Cascade in Washington; British Columbia to northern California, eastern United States, Europe, Australia and Pacific Islands.
Habitat: Disturbed areas, fields and open woods.
Origin: Introduced from Europe
Flowers: May-July
Heart-leaf buttercup (Ranunculus cardiophyllus)
Distribution: Reported from northeastern Washington, but no specimens have been seen; From eastern British Columbia and Alberta to northeastern Washington, in scattered locations eastward in the Rocky Mountains and Great Plains.
Habitat: Wet to dry montane to subalpine meadows.
Origin: Native
Flowers: June-August
Hornseed buttercup (Ceratocephala testiculata)
Distribution: Introduced in all of western United States, and east in the northern half of the United States to Ohio; chiefly east of the Cascades in Washington and Oregon
Habitat: Disturbed soil in sagebrush deserts and plains
Origin: Introduced from Europe
Flowers: March-May
Kidney-leaf buttercup (Ranunculus abortivus)
Distribution: Occurring in the northeastern region of Washington; Yukon Territory to the southern Rocky Mountains and Gulf Coast, east to the Atlantic coast.
Habitat: Montane forest understory and meadows.
Origin: Native
Flowers: July
Little buttercup (Ranunculus uncinatus)
Distribution: Widely distributed throughout Washington; Alaska to California, east to Montana and New Mexico.
Habitat: Moist, usually shady areas, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-July
Macoun's buttercup (Ranunculus macounii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains and northern Great Plains and central Canada; also in Canadian Maritimes.
Habitat: Riparian areas and wet meadows from lowlands to montane.
Origin: Native
Flowers: May-July
Meadow buttercup (Ranunculus acris)
Distribution: Occurring chiefly west of the Cascades crest in Washington; widely distributed in the northern half of North America.
Habitat: Moist to well-drained soil at low to moderate elevations.
Origin: Introduced from Europe
Flowers: May-August
Mountain buttercup (Ranunculus populago)
Distribution: In two discrete locations in Washington (Pierce County and Blue Mountains); Washington to California, east to Idaho and western Montana.
Habitat: Wet areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: April-August
Obscure buttercup (Ranunculus triternatus)
Distribution: Known from Klickitat County in Washington; southcentral Washington to Wasco County, Oregon.
Habitat: Sagebrush slopes.
Origin: Native
Flowers: March-April
Pennsylvania buttercup (Ranunculus pensylvanicus)
Distribution: Occurring on both sides of the Cascade crest in Washington; Alaska to Washington, Idaho and Montana; also in eastern North America and scattered areas in the Southwest.
Habitat: Wet ground, especially along streams.
Origin: Native
Flowers: June-July
Plantainleaved buttercup (Ranunculus alismifolius)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Swales, streambanks and moist meadows, moderate to high elevations in the mountains.
Origin: Native
Flowers: May-July
Sagebrush buttercup (Ranunculus glaberrimus)
Distribution: Occurring chiefly east of the Cascades in Washington, with disjunct populations in the northeast Olympic Mountains and Ross Lake area of Whatcom County; British Columbia to northern California, east to the Great Plains.
Habitat: Sagebrush desert, shrub-steppe and ponderosa pine woodlands.
Origin: Native
Flowers: March-June
Seaside buttercup (Halerpestes cymbalaria)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America except southern and southeastern regions of U.S.
Habitat: Ditches, marshes and muddy meadowlands, often where saline or alkaline.
Origin: Native
Flowers: May-August
Small yellow water buttercup (Ranunculus gmelinii)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to Nevada, east to the Rocky Mountains, and across Canada to the Atlantic Coast.
Habitat: Standing water up to 2 meters deep.
Origin: Native
Flowers: May-September
Small-flower buttercup (Ranunculus parviflorus)
Distribution: Sparingly introduced to lowlands of western Washington; Washington south to California; southeastern U.S.
Habitat: Roadsides, fields, urbanized settings, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Spiny-fruit buttercup (Ranunculus muricatus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Washington to California, east across North America in scattered locations.
Habitat: Ditches and other moist places, often on cultivated land.
Origin: Introduced from Europe
Flowers: April-June
Straightbeak buttercup (Ranunculus orthorhynchus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Utah.
Habitat: Streambanks and moist fields to mountain meadows and slopes.
Origin: Native
Flowers: April-August
Subalpine buttercup (Ranunculus eschscholtzii)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana, Colorado and New Mexico.
Habitat: Meadow and talus slopes at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Western buttercup (Ranunculus occidentalis)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California, east to Alberta and Nevada.
Habitat: Moist to well-drained soil, low to mid-elevations in the mountains.
Origin: Native
Flowers: April-June
White western buttercup (Ranunculus aquatilis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana and Wyoming.
Habitat: In sluggish streams, ponds, lakes, and mudflats at low to moderate elevations.
Origin: Native
Flowers: May-August
Yellow water buttercup (Ranunculus flabellaris)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to northern California, east to the Rocky Mountain states and in central and eastern North America.
Habitat: Shallow ponds, mud flats and marshes at low elevations.
Origin: Native
Flowers: May-August
Orange-eye butterfly-bush (Buddleja davidii)
Distribution: Introduced in western Washington; British Columbia south to California, and eastern United States.
Habitat: Escaped ornamental; roadsides and waste ground
Origin: Introduced
Flowers: March-October
Alkali marsh butterweed (Senecio hydrophilus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Swampy places in the valleys and foothills; tolerant of alkali.
Origin: Native
Flowers: June- September
Alpine meadow butterweed (Packera subnuda)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Wyoming.
Habitat: Wet meadows in the subalpine and alpine.
Origin: Native
Flowers: July-September.
Canadian butterweed (Packera paupercula)
Distribution: Occurring east of the Cascades crest in Washington British Columbia to Washington, east to the Rocky Mountains, northern Great Plains, and eastern North America.
Habitat: Meadows, moist cilffs and woods, from the foothills to middle elevations in the mountains.
Origin: Native
Flowers: May-October
Dwarf arctic butterweed (Packera contermina)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Washington, east to Alberta and Montana.
Habitat: Exposed, rocky places in the alpine to occasionally the subalpine;
Origin: Native
Flowers: July-September
Dwarf mountain butterweed (Senecio fremontii)
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah.
Habitat: Open, rocky slopes at high elevations in the mountains
Origin: Native
Flowers: July-September
One-stemmed butterweed (Senecio integerrimus)
Distribution: Occurring chiefly east of the Cascades crest in Washington, where widely distributed; British Columbia to California, east to the Great Plains and Great Lakes region.
Habitat: Meadows and seasonally moist open areas from low elevations to the subalpine.
Origin: Native
Flowers: May-August
Puget butterweed (Packera macounii)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Open woods and dry, open places at low elevations.
Origin: Native
Flowers: May-July
Rayless alpine butterweed (Packera pauciflora)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to northern Washington, disjunct in California and northwest Wyoming, east to Northwest Territory and Alberta, also in eastern Canada.
Habitat: Alpine and subalpine meadows and moist cliffs.
Origin: Native
Flowers: June-August
Rayless mountain butterweed (Packera indecora)
Distribution: Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, and also in California, east to Idaho, Montana, Wyoming, and in the Great Lakes Region, also east across Canada to the Atlantic Coast.
Habitat: Damp meadows to stream banks and moist woodlands, from the valleys to the subalpine.
Origin: Native
Flowers: July-August
Rocky Mountain butterweed (Packera streptanthifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains and Sasketchewan.
Habitat: Moist to moderately dry open areas and forest, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August
Streambank butterweed (Packera pseudaurea)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, the Rocky Mountains, northern Great Plains, and central U.S.
Habitat: Wet meadows, stream banks and moist woodlands from middle elevations to the sublpine.
Origin: Native
Flowers: June-August
Sweet marsh butterweed (Senecio hydrophiloides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah.
Habitat: Wet meadows in the mountains and foothills, but not in alkali.
Origin: Native
Flowers: May-July
Tall butterweed (Senecio serra)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Meadows and open, moist hillsides, foothills to mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Common butterwort (Pinguicula vulgaris)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, also in Montana; east across Canada to eastern North America; circumboreal.
Habitat: Bogs and wet soil from middle elevations to the alpine.
Origin: Native
Flowers: June-September
Bachelor's button (Centaurea cyanus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, meadows, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from the Mediterranean region
Flowers: May-October
Brass buttons (Cotula coronopifolia)
Distribution: Occurring west of the Cascades crest along the Puget Sound, outer coast, and lower Columbia River shorelines. Alaska to California, east to Nevada and Arizona, also in northeastern North America.
Habitat: Tidal flats.
Origin: Introduced from South Africa
Flowers: June-September
Common brass buttons (Cotula coronopifolia)
Distribution: Occurring west of the Cascades crest along the Puget Sound, outer coast, and lower Columbia River shorelines. Alaska to California, east to Nevada and Arizona, also in northeastern North America.
Habitat: Tidal flats.
Origin: Introduced from South Africa
Flowers: June-September