Includes all flowering plants, conifers, ferns and fern-allies.
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233 common names
Show only taxa with photos
Index to common names:
rabbit-brush,
rabbit-tobacco,
rabbitbrush,
rabbitleaf,
radish,
ragged-robin,
ragweed,
ragwort,
Rainiera,
rape,
rapeseed,
raspberry,
rattlesnake-plantain,
ravennagrass,
redcedar,
redmaids,
redmainds,
redshank,
redstem,
redtip,
redwood-sorrel,
reed,
reedgrass,
rein orchid,
rein-orchid,
resinweed,
restharrow,
rhododendron,
rhubarb,
rice,
rish,
robin,
rock-jasmine,
rockbrake,
rockcress,
rocket,
rockmat,
root,
rose,
rose-of-sharon,
rosemallow,
roseroot,
rue,
rupturewort,
rush,
Russian-olive,
Russian-sickle,
rye,
ryegrass
(Ericameria nauseosa)
Distribution: Chiefly east of the Cascades in Washington; British Columbia to Oregon, east to Montana.
Habitat: Dry, open areas from the plains to moderate elevations in the mountains.
Origin: Native
Flowers: August-September
(Chrysothamnus viscidiflorus)
Distribution: Occurring east of the Cascades in Washington; Washington south to California, east to Montana and New Mexico.
Habitat: Shrub-steppe, dry foothills.
Origin: Native
Flowers: July-September
(Pseudognaphalium macounii)
Origin: Native
(Pseudognaphalium thermale)
Distribution: Occurring on both sides of the Cascades crest in Washingotn; British Columbia south to California, east to Montana and Utah.
Habitat: Dry, sandy banks and ditches, open woods of ponderosa pine and Douglas fir, and mixed deciduous forests.
Origin: Native
Flowers: June-September
(Pseudognaphalium luteoalbum)
Distribution: Locally introduced, chiefly west of the Cascades.
Habitat: Disturbed waste ground.
Origin: Introduced
Flowers: June - October
(Chrysothamnus humilis)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Shrub-steppe, grasslands, and sites with alkaline soils.
Origin: Native
Flowers: July-September
(Chrysothamnus humilis)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Shrub-steppe, grasslands, and sites with alkaline soils.
Origin: Native
Flowers: July-September
(Lagophylla ramosissima)
Distribution: Occurring east of the Cascades in Washington; Washington south to California, east to Montana, Idaho, and Nevada.
Habitat: Dry, open areas of foothills and plains.
Origin: Native
Flowers: May-July
(Raphanus sativus)
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout North America.
Habitat: Waste places.
Origin: Introduced, probably from Mediterranean Europe
Flowers: May-July
(Raphanus sativus)
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout North America.
Habitat: Waste places.
Origin: Introduced, probably from Mediterranean Europe
Flowers: May-July
(Raphanus raphanistrum)
Distribution: Occurring in scattered locations chiefly west of the Cascades; widely distributed throughout North America.
Habitat: Weed of waste ground.
Origin: Introduced, probably from the Mediterranean region
Flowers: May-July
(Silene flos-cuculi)
Origin: Introduced
(Ambrosia artemisiifolia)
Distribution: Occurring on both sides of the Cascades in Washington; widespread throughout North America; also introduced in Europe.
Habitat: Dry, disturbed, open areas at low elevations, including roadsides, pastures, and wastelots.
Origin: Introduced
Flowers: August-October
(Ambrosia acanthicarpa)
Distribution: Chiefly east of the Cascades, but widespread in western United States, to Texas and the Dakotas
Habitat: Weedy native in dry areas at low elevations
Origin: Native
Flowers: July-October
(Ambrosia artemisiifolia)
Distribution: Occurring on both sides of the Cascades in Washington; widespread throughout North America; also introduced in Europe.
Habitat: Dry, disturbed, open areas at low elevations, including roadsides, pastures, and wastelots.
Origin: Introduced
Flowers: August-October
(Ambrosia trifida)
Distribution: Native and widespread in central and eastern United States; an occasional introduction in the Pacific Northwest.
Habitat: Waste places, usually in moist soil.
Origin: Introduced
Flowers: July-October
(Ambrosia psilostachya)
Distribution: Occurring in the eastern portion of Washington; widely distributed throughout North America except for Alaska and far northern Canada.
Habitat: Waste ground.
Origin: Native
Flowers: July-October
(Ambrosia psilostachya)
Distribution: Occurring in the eastern portion of Washington; widely distributed throughout North America except for Alaska and far northern Canada.
Habitat: Waste ground.
Origin: Native
Flowers: July-October
(Senecio hydrophilus)
Distribution: East of the Cascades, British Columbia to California, east to South Dakota and Colorado.
Habitat: Swampy places in the valleys and foothills; tolerant of alkali.
Origin: Native
Flowers: June- September
(Senecio triangularis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Moist places and streambanks, moderate to high elevations in the mountains, and low elvations west of the Cascades.
Origin: Native
Flowers: June-September
(Senecio elmeri)
Distribution: Occurring in the Cascade and Wenatchee Mountains of central and northern Washington; British Columbia south to Washington.
Habitat: Talus slopes and other rocky places in alpine areas.
Origin: Native
Flowers: July-September
(Senecio neowebsteri)
Distribution: Olympic Mountains of Washington at high elevations.
Habitat: Talus slopes and rocky places.
Origin: Native
Flowers: Aug.-Sept.
(Jacobaea maritima)
Origin: Introduced
(Packera macounii)
Distribution: West of the Cascades, British Columbia to southern Oregon, mostly in the Puget Trough.
Habitat: Open woods and dry, open places.
Origin: Native
Flowers: May - July
(Senecio viscosus)
Origin: Introduced
(Jacobaea vulgaris)
Distribution: Widely distributed on both sides of the Cascades in Washington; British Columbia south to California, east to Idaho and Montana; eastern North America.
Habitat: A weed of pastures, roadsides, forest edges, and other disturbed areas.
Origin: Introduced
Flowers: June-September
(Senecio sylvaticus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, also in eastern North America.
Habitat: Disturbed ground at low elevations.
Origin: Introduced from Europe
Flowers: May-September
(Rainiera stricta)
Distribution: Occurring on both sides of the Cascades crest in south-central Washington; Washington south to Oregon.
Habitat: Meadows and moist, open hillsides at mid- to high elevations in the mountains.
Origin: Native
Flowers: July-August
(Brassica napus)
Distribution: Known from only a few scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including fields, roadsides, and wastelots, where often escaped from cultivation.
Origin: Introduced from Eurasia
Flowers: April-June
(Brassica napus)
Distribution: Known from only a few scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including fields, roadsides, and wastelots, where often escaped from cultivation.
Origin: Introduced from Eurasia
Flowers: April-June
(Brassica napus)
Distribution: Known from only a few scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including fields, roadsides, and wastelots, where often escaped from cultivation.
Origin: Introduced from Eurasia
Flowers: April-June
(Rubus leucodermis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to southern California, east to the Rocky Mountains.
Habitat: Fields and open to wooded hillsides, from low to moderate elevations.
Origin: Native
Flowers: April-July
(Rubus leucodermis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to southern California, east to the Rocky Mountains.
Habitat: Fields and open to wooded hillsides, from low to moderate elevations.
Origin: Native
Flowers: April-July
(Rubus nigerrimus)
Distribution: Along the Snake River in Whitman County, Washington.
Habitat: Moist hillsides, usually along streams.
Origin: Native
Flowers: May - June
(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
(Rubus nigerrimus)
Distribution: Along the Snake River in Whitman County, Washington.
Habitat: Moist hillsides, usually along streams.
Origin: Native
Flowers: May - June
(Rubus odoratus)
Origin: Introduced
(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
(Rubus idaeus)
Distribution: Alaska east to Newfoundland, south to California and North Carolina.
Habitat: Stream banks and open, moist or dry woods to rocky slopes in the mountains, often on talus.
Origin: Native
Flowers: May - July
(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
(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
(Rubus leucodermis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to southern California, east to the Rocky Mountains.
Habitat: Fields and open to wooded hillsides, from low to moderate elevations.
Origin: Native
Flowers: April-July
(Goodyera oblongifolia)
Distribution: Widely distributed throughout the mountainous and forested areas of Washington; Alaska south to California, east to the Rocky Mountains; Great Lakes Region and eastern Canada/New England.
Habitat: Dry to moist forests, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: July-August
(Goodyera oblongifolia)
Distribution: Widely distributed throughout the mountainous and forested areas of Washington; Alaska south to California, east to the Rocky Mountains; Great Lakes Region and eastern Canada/New England.
Habitat: Dry to moist forests, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: July-August
(Tripidium ravennae)
Origin: Introduced
(Juniperus scopulorum)
Distribution: Puget Trough and southwest British Columbia, south, east Cascades, to Oregon, east to Nebraska
Habitat: Coastal islands to inland valleys and lower mountains
Origin: Native
Cones: May - June
(Calandrinia ciliata)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California, east to Arizona and New Mexico.
Habitat: Gravelly to heavy soil, usually where vernally moist, at low elevations.
Origin: Native
Flowers: April-May
(Calandrinia ciliata)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California, east to Arizona and New Mexico.
Habitat: Gravelly to heavy soil, usually where vernally moist, at low elevations.
Origin: Native
Flowers: April-May
(Persicaria maculosa)
Distribution: Occurring throughout much of Washington; widely distributed throughout North America.
Habitat: A weedy species, usually on moist, cultivated or otherwise disturbed soil.
Origin: Introduced
Flowers: March-September
(Ammannia robusta)
Distribution: Occurring east of the Cascades crest in Washington; widely distributed from the tropics to much of North America.
Habitat: Wet places, often where alkaline.
Origin: Native
Flowers: May-june
(Ammannia coccinea)
Distribution: Known only from a restoration site in King County; California east along Mexican border to central and eastern U.S.
Habitat: Restored wetland.
Origin: Introduced
Flowers: June-August
(Photinia davidiana)
Origin: Introduced from China
(Photinia villosa)
Origin: Introduced from China
(Oxalis oregana)
Distribution: Olympic Mountains and west slope of the Cascades in Washington; British Columbia south to California.
Habitat: Moist woods, low to moderate elevations.
Origin: Native
Flowers: April-September
(Phragmites australis)
Distribution: In scattered locations throughout many areas of Washington; widely distributed throughout North America; circumboreal.
Habitat: Disturbed areas, including roadsides, often where wet or seasonally moist.
Origin: Native
Flowers: July-September
(Calamagrostis canadensis)
Distribution: Alaska to Quebec, south through the United States except for the Deep South
Habitat: Wet places, sea level to mid-elevations in the mountains
Origin: Native
Flowers: Late June - August
(Calamagrostis purpurascens)
Origin: Native
Flowers: Late June - August
(Calamagrostis tacomensis)
Origin: Native
Flowers: Late July - September
(Calamagrostis stricta)
Origin: Native
(Platanthera elegans)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Mostly in dry, open woods and hills where moist in spring.
Origin: Native
Flowers: June-September
(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
(Platanthera elegans)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Mostly in dry, open woods and hills where moist in spring.
Origin: Native
Flowers: June-September
(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
(Grindelia hirsutula)
Distribution: From the coast to mid elevations; both sides of the Cascades in Washington. British Columbia south to California, east to New York and Quebec.
Habitat: Coastal bluffs, forest openings, alluvial areas, disturbed sites.
Origin: Native
Flowers: May-October
(Grindelia squarrosa)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east across southern Canada and most of the United States to the Atlantic Coast.
Habitat: Dry, open, often sandy places, at low elevations.
Origin: Introduced
Flowers: June-September
(Ononis spinosa)
Origin: Introduced
(Rhododendron macrophyllum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Moist woods, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
(Rhododendron macrophyllum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Moist woods, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
(Rhododendron albiflorum)
Distribution: British Columbia to Oregon, east to Montana
Habitat: Moist, usually forested, slopes, mid- to high elevations in the mountains
Origin: Native
Flowers: June - August
(Rheum rhabarbarum)
Origin: Introduced
(Fritillaria camschatcensis)
Distribution: Chiefly northern Puget Sound lowlands in Washington; Kodiak Island and coastal Alaska south to Washington.
Habitat: Moist areas from near tide flats to mountain meadows.
Origin: Native
Flowers: May-July
(Juncus nodosus)
Distribution: East of the Cascades, British Columbia to California, east to Nova Scotia and Maine.
Habitat: Ditches, ponds and wet places.
Origin: Native
Flowers: Late June - August
(Clarkia pulchella)
Distribution: Chiefly east of the Cascades in Washington; British Columbia to Oregon, east to South Dakota.
Habitat: Dry, open slopes, low to mid-elevations.
Origin: Native
Flowers: May-June
(Androsace filiformis)
Origin: Native
Flowers: June - July
(Cryptogramma acrostichoides)
Distribution: Alaska to California, east in cool, moist areas to Ontario and Michigan
Habitat: Cliff crevices and talus slopes at mid- to high elevations in the mountains
Origin: Native
(Cryptogramma cascadensis)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana
Habitat: Cliff crevices and talus slopes at mid- to high elevations in the mountains, occasionally descending to sea level in humid areas.
Origin: Native
Spores: May-September
(Cryptogramma stelleri)
Origin: Native
(Cryptogramma stelleri)
Origin: Native
(Cryptogramma stelleri)
Origin: Native
(Boechera atrorubens)
Distribution: East of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Sagebrush and ponderosa pine country.
Origin: Native
Flowers: April-June
(Boechera puberula)
Origin: Native
(Boechera calderi)
Origin: Native
(Boechera stricta)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains, and east along the northern U.S. and southern Canada to the Atlantic Coast.
Habitat: Open areas in the forest at mid-elevations to sub-alpine meadows.
Origin: Native
Flowers: May-July
(Arabis furcata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Open slopes, meadows, and ridgelines in alpine and subalpine areas.
Origin: Native
Flowers: May-July
(Boechera cascadensis)
Origin: Native
(Arabis furcata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Open slopes, meadows, and ridgelines in alpine and subalpine areas.
Origin: Native
Flowers: May-July
(Boechera pauciflora)
Distribution: East of the Cascades crest in Washington; British Columbia south to California, east to Montana and Utah.
Habitat: Sagebrush and ponderosa pine country.
Origin: Native
Flowers: April-June
(Arabis crucisetosa)
Distribution: Occurring in the southeastern corner of Washington; Snake River canyon, Asotin County, Washington, east to west-central Idaho.
Habitat: Wet banks to moist soil or coniferous woods.
Origin: Native
Flowers: April-June
(Boechera cusickii)
Distribution: East of the Cascades in Washington; east-central Washington south to Nevada, east to central Idaho.
Habitat: Sagebrush flats to open Ponderosa pine forests, often on lithosol.
Origin: Native
Flowers: March-May
(Boechera pendulocarpa)
Distribution: Chiefly east of the Cascades crest in Washington; Yukon Territory south to California, east to Montana, Wyoming, and Utah.
Habitat: From sagebrush and ponderosa pine slopes to well up in the mountains.
Origin: Native
Flowers: May-August
(Boechera stricta)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains, and east along the northern U.S. and southern Canada to the Atlantic Coast.
Habitat: Open areas in the forest at mid-elevations to sub-alpine meadows.
Origin: Native
Flowers: May-July
(Boechera sparsiflora)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Nevada, and Utah.
Habitat: From sagebrush plains to forest openings and meadows at moderate elevations.
Origin: Native
Flowers: May-July
(Boechera pauciflora)
Distribution: East of the Cascades crest in Washington; British Columbia south to California, east to Montana and Utah.
Habitat: Sagebrush and ponderosa pine country.
Origin: Native
Flowers: April-June
(Arabis furcata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Washington south to Oregon.
Habitat: Open slopes, meadows, and ridgelines in alpine and subalpine areas.
Origin: Native
Flowers: May-July
(Boechera grahamii)
Origin: Native
(Arabis eschscholtziana)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to the northern Rocky Mountains.
Habitat: Open areas, often in waste places, from sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-July
(Boechera puberula)
Origin: Native
(Arabidopsis kamchatica)
Origin: Native
(Boechera lemmonii)
Distribution: Occurring in the Olympic Mountains and East Cascades in Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Alpine meadows, ridges and talus slopes.
Origin: Native
Flowers: July-September
(Boechera microphylla)
Distribution: Occurring in Washington east of the Cacades crest; British Columbia south to eastern Oregon, east to Montana and Wyoming.
Habitat: Low montane to subalpine.
Origin: Native
Flowers: April-July
(Boechera lyallii)
Distribution: Widely distributed in the mountains throughout Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, cliffs, and drier meadows.
Origin: Native
Flowers: June-August
(Arabidopsis kamchatica)
Origin: Native
(Boechera paddoensis)
Distribution: Occurring east of the Cascades crest in the Mt. Adams area; Washington south to northeastern Oregon.
Habitat: Alpine slopes and talus.
Origin: Native
Flowers: July-August
(Boechera lyallii)
Distribution: Widely distributed in the mountains throughout Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, cliffs, and drier meadows.
Origin: Native
Flowers: June-August
(Arabis nuttallii)
Origin: Native
Flowers: April - August
(Arabis olympica)
Origin: Native
(Arabis eschscholtziana)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to the northern Rocky Mountains.
Habitat: Open areas, often in waste places, from sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-July
(Boechera sparsiflora)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Nevada, and Utah.
Habitat: From sagebrush plains to forest openings and meadows at moderate elevations.
Origin: Native
Flowers: May-July
(Boechera pauciflora)
Distribution: East of the Cascades crest in Washington; British Columbia south to California, east to Montana and Utah.
Habitat: Sagebrush and ponderosa pine country.
Origin: Native
Flowers: April-June
(Boechera microphylla)
Distribution: Occurring in Washington east of the Cacades crest; British Columbia south to eastern Oregon, east to Montana and Wyoming.
Habitat: Low montane to subalpine.
Origin: Native
Flowers: April-July
(Boechera divaricarpa)
Distribution: Occurring on both sides of the Cascades crest in Washington, and in the Olympic Mountains; Alaska south to California, east to the Rocky Mountains.
Habitat: From middle elevations to subalpine areas in the mountains.
Origin: Native
Flowers: June-August
(Arabidopsis kamchatica)
Origin: Native
(Boechera suffrutescens)
Origin: Native
(Barbarea orthoceras)
Distribution: Widely distributed throughout Washington; Alaska to the mountains of California, east though the Rockies to the New England states.
Habitat: Meadows, stream banks and moist woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: March-July
(Hesperis matronalis)
Distribution: Scattered locations on both sides of the Cascades in Washington; distributed throughout North America except for the southern portion of the U.S.
Habitat: Sometimes escaping and persisting on waste ground.
Origin: Introduced from Europe
Flowers: May-June
(Reseda luteola)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California; scattered locations in central and eastern North America.
Habitat: Disturbed ground at low elevations.
Origin: Introduced from Europe
Flowers: May-September
(Barbarea verna)
Origin: Introduced from Eurasia
Flowers: April - July
(Cakile maritima)
Distribution: Occurring along coastal counties in Washington; British Columbia south to California along the coast.
Habitat: At water's edge in sand or gravel.
Origin: Introduced from Europe
Flowers: May-September
(Sisymbrium loeselii)
Distribution: Occurring east of the Cascades in Washington; British Columbia south to Nevada, east to the Atlantic Coast.
Habitat: Roadsides and drier disturbed areas.
Origin: Introduced from Eurasia
Flowers: June-August
(Erucastrum gallicum)
Distribution: Weedy introduction from central Europe, fairly common in eastern United States; found in a few scattered locations in the Pacific Northwest.
Habitat: Waste areas and disturbed soil.
Origin: Introduced from Eurasia
Flowers: May - July
(Erysimum inconspicuum)
Distribution: Known from the northeast region in Washington; Alaska south to Oregon and Nevada, east across much of the U.S. and Canada to the Atlantic Coast.
Habitat: Rock outcroppings and roadsides where calcareous, also tolerant of alkaline soils.
Origin: Native
Flowers: June-July
(Cakile maritima)
Distribution: Occurring along coastal counties in Washington; British Columbia south to California along the coast.
Habitat: At water's edge in sand or gravel.
Origin: Introduced from Europe
Flowers: May-September
(Erysimum inconspicuum)
Distribution: Known from the northeast region in Washington; Alaska south to Oregon and Nevada, east across much of the U.S. and Canada to the Atlantic Coast.
Habitat: Rock outcroppings and roadsides where calcareous, also tolerant of alkaline soils.
Origin: Native
Flowers: June-July
(Erysimum inconspicuum)
Distribution: Known from the northeast region in Washington; Alaska south to Oregon and Nevada, east across much of the U.S. and Canada to the Atlantic Coast.
Habitat: Rock outcroppings and roadsides where calcareous, also tolerant of alkaline soils.
Origin: Native
Flowers: June-July
(Sisymbrium altissimum)
Distribution: Distributed throughout Washington but more common east of the Cascades; occurring throughout North America.
Habitat: Shrub-steppe, grasslands, and waste ground, especially following rangeland fires.
Origin: Introduced from Eurasia
Flowers: May-September
(Barbarea orthoceras)
Distribution: Widely distributed throughout Washington; Alaska to the mountains of California, east though the Rockies to the New England states.
Habitat: Meadows, stream banks and moist woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: March-July
(Barbarea vulgaris)
Distribution: Chiefly west of the Cascades in Washington, with scattered locations east of the Cascades; distributed throughout much of the United States.
Habitat: Garden escape, found chiefly in wet places.
Origin: Introduced from Eurasia
Flowers: April-July
(Petrophytum cinerascens)
Distribution: Endemic to Columbia River region of central Washington.
Habitat: Basaltic cliffs.
Origin: Native
Flowers: June-August
(Petrophytum hendersonii)
Distribution: Endemic to (only occurring in) the Olympic Mountains of Washington.
Habitat: Rocky cliffs and talus slopes at mid- to high elevations.
Origin: Native
Flowers: July-September
(Petrophytum caespitosum)
Origin: Native
(Streptopus amplexifolius)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, also in northeastern North America.
Habitat: Open to dense moist forests from low elevations to subalpine.
Origin: Native
Flowers: May-July
(Iva axillaris)
Distribution: Chiefly east of the Castades, southern British Columbia to California, east to Manitoba and Oklahoma.
Habitat: Dry, often alkaline places, in the valleys, plains and foothills.
Origin: Native
Flowers: May - September
(Nabalus alatus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska, south to Oregon, east to Alberta, Idaho, and Montana.
Habitat: Streambanks and other moist, shaded places.
Origin: Native
Flowers: July-September
(Rosa gymnocarpa)
Distribution: Occurring west of and on the east slope of the Cascades in Washington; British Columbia to California, and in the mountains of Idaho and eastern Oregon.
Habitat: Moist or dry woods, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
(Rosa pisocarpa)
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Origin: Native
Flowers: May-July
(Rosa canina)
Distribution: Introduced at low elevations west of the Cascades, and in Idaho
Habitat: Roadside thickets.
Origin: Introduced
Flowers: May - June
(Filago arvensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.
Habitat: Dry, open waste land and overgrazed ranges.
Origin: Introduced
Flowers: July-September
(Rosa pisocarpa)
Distribution: Occurring west of the Cascades crest in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Origin: Native
Flowers: May-July
(Rosa woodsii)
Distribution: Occurring east of the Cascades crest in Washington; Alaska south to California, east to the central U.S. and eastern Canada.
Habitat: Valleys and hillsides at low elevations to forest openings at mid-elevations in the mountains.
Origin: Native
Flowers: May-July
(Rosa multiflora)
Distribution: British Columbia to California; throughout central and eastern North America. Native to eastern Asia.
Habitat: Disturbed areas, roadside plantings, riparian zones.
Origin: Introduced from Europe
Flowers: April-June
(Rosa rugosa)
Distribution: Known from a few scattered locations in lowland western Washington; Alaska and Washington in western North America; in the north-central and northeastern areas of North America.
Habitat: Edge of saltwater beaches, roadsides, forest edge, fields, and other disturbed areas.
Origin: Introduced
Flowers: June-August
(Rosa rubiginosa)
Distribution: Introduced chiefly west of the Cascades, and in eastern United states.
Habitat: Roadsides and pastures, occasionally in more natural areas.
Origin: Introduced
Flowers: June - July
(Rosa gymnocarpa)
Distribution: Occurring west of and on the east slope of the Cascades in Washington; British Columbia to California, and in the mountains of Idaho and eastern Oregon.
Habitat: Moist or dry woods, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
(Hypericum calycinum)
Distribution: West of the Cascades in Washington at low elevations.
Habitat: Escaped from cultivation in disturbed, urban settings.
Origin: Introduced from Turkey and Bulgaria
Flowers: May-July
(Hibiscus moscheutos)
Distribution: Sporadic in central Washington; native to eastern North America
Habitat: Moist areas along edge of ponds and lakes.
Origin: Introduced
Flowers: July-August
(Rhodiola integrifolia)
Distribution: In the Cascades and northeastern corner of Washington; Alaska to south to California, east to Colorado.
Habitat: Cliffs, talus and ridges, subalpine to alpine, generally where moist in early summer.
Origin: Native
Flowers: June-August
(Peganum harmala)
Origin: Introduced
Flowers: June - August
(Thalictrum occidentale)
Distribution: Occurring on both sides of the Cascades in Washingtton; British Columbia south to northern California, east to Montana and Colorado.
Habitat: Shady woodlands and forests, from low elevations to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
(Herniaria hirsuta)
Distribution: Recently collected in Spokane County; Washington and California, also in Maryland and Massachusetts
Habitat: Disturbed sandy flats, roadsides, and woodlands at low elevation
Origin: Introduced
Flowers: May-July
(Juncus alpinoarticulatus)
Distribution: In scattered location on both sides of the Cascades crest in Washington; scattered throughout North America from Alaska to Washington, east across Canada and central U.S. to northeastern North America.
Habitat: Wet meadows, pond and lake shores.
Origin: Native
Flowers: July-September
(Juncus balticus)
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of western and central North America, less widely distributed in eastern North America.
Habitat: Wet places, often where saline or alkaline.
Origin: Native
Flowers: June-August
(Juncus gerardi)
Distribution: Occurring west of the Cascades crest in counties along the Puget Sound and outer coast; British Columbia south to Oregon, east sporadically across the U.S. to the northern Atlantic coast of the U.S. and Canada; circumboreal.
Habitat: Coastal salt marshes.
Origin: Both native and introduced - occurring in eastern North America, Eurasia.
Flowers: June-September
(Juncus inflexus)
Origin: Introduced
(Juncus hesperius)
Origin: Native
(Juncus bolanderi)
Distribution: West of the Cascades, southern British Columbia south to coastal California.
Habitat: Marshes and river bottoms from tidelands to the lower mountains.
Origin: Native
Flowers: Late May - August
(Juncus breweri)
Origin: Native
(Juncus pelocarpus)
Origin: Introduced from northeastern North America
(Juncus bulbosus)
Distribution: Introduced at several locations in wsestern Washington; British Columbia south to Oregon, east across northern Canada to the Atlantic Coast; Europe.
Habitat: Sandy or peaty shores of streams and pools.
Origin: Introduced from Eurasia
Flowers: August
(Juncus canadensis)
Distribution: Occurring west of the Cascades crest in Washington; also in Oregon, otherwise widespread east of the Mississippi River.
Habitat: Brackish swamps, acid bogs, tidal flats and beaches.
Origin: Introduced from eastern North America
Flowers: June - July
(Juncus hesperius)
Origin: Native
(Juncus confusus)
Origin: Native
Flowers: June - August
(Juncus pylaei)
Origin: Introduced
(Juncus conglomeratus)
Origin: Introduced from Europe
(Juncus covillei)
Origin: Native
(Juncus ensifolius)
Distribution: Widely distributed throughout the mountainous areas of Washington; Alaska south to California, east to the Great Plains; introduced in eastern North America.
Habitat: Shores of ponds and streams, wet meadows, fens, seeps, and ditches from low to high elevations in the mountains.
Origin: Native
Flowers: June-August
(Juncus ensifolius)
Distribution: Widely distributed throughout the mountainous areas of Washington; Alaska south to California, east to the Great Plains; introduced in eastern North America.
Habitat: Shores of ponds and streams, wet meadows, fens, seeps, and ditches from low to high elevations in the mountains.
Origin: Native
Flowers: June-August
(Juncus diffusissimus)
Origin: Introduced from South America
(Juncus drummondii)
Distribution: Alaska south to California, east to the Rockies, Alberta to New Mexico.
Habitat: Alpine to subalpine meadows, streambanks, talus slopes and ridges.
Origin: Native
Flowers: July - September
(Juncus dudleyi)
Origin: Native
Flowers: June - September
(Equisetum scirpoides)
Distribution: Circumboreal, south in North America to northeast Washington, east to northwest Montana, Minnisota, and New York.
Habitat: Moist, swampy places, especially in coniferous forests.
Origin: Native
(Equisetum ×ferrissii)
Origin: Native
(Butomus umbellatus)
Distribution: Whatcom County in Washington. Introduced across the northern United States from Washington to Vermont.
Habitat: Occasional in ponds and wetlands.
Origin: Introduced from Eurasia
Flowers: August
(Juncus trilocularis)
Origin: Native
(Juncus anthelatus)
Origin: Introduced from eastern North America
(Juncus supiniformis)
Distribution: Alaska south along the coast west of the Cascades to Mendocino County, California.
Habitat: Marshes, ponds, ditches and rivers, often where submerged early in the season.
Origin: Native
Flowers: July - September
(Juncus howellii)
Origin: Native
Flowers: July - August
(Juncus uncialis)
Distribution: Oregon and California, occasional in estern Washington
Habitat: Margins of vernal pools and ponds.
Origin: Native
Flowers: May - June
(Juncus interior)
Distribution: Alberta south to Colorado, east to Quebec and Tennesee; occasional in eastern Washington.
Habitat: Dry, upland sites in prairies, exposed sites in disturbed areas, ditches in sandy or clayey soil
Origin: Native
Flowers: May - June
(Juncus articulatus)
Origin: Native
(Juncus articulatus)
Origin: Native
(Juncus kelloggii)
Origin: Native
Flowers: April - July
(Juncus acuminatus)
Distribution: Mostly west of the Cascades, British Columbia south to California, east to southwest Idaho and Arizona.
Habitat: Ditches, lake margins, meadows and other wet places.
Origin: Native
Flowers: Late May - August
(Juncus longistylis)
Origin: Native
Flowers: Late June - August
(Juncus mertensianus)
Distribution: Alaska to California, east to Alberta, South Dakota and New Mexico
Habitat: Wet places along streams and lakes, mid- to high elevations in the mountains
Origin: Native
Flowers: July - September
(Juncus gerardi)
Distribution: Occurring west of the Cascades crest in counties along the Puget Sound and outer coast; British Columbia south to Oregon, east sporadically across the U.S. to the northern Atlantic coast of the U.S. and Canada; circumboreal.
Habitat: Coastal salt marshes.
Origin: Both native and introduced - occurring in eastern North America, Eurasia.
Flowers: June-September
(Juncus brevicaudatus)
Origin: Native
(Juncus nevadensis)
Distribution: Southern British Columbia to California, east to the Rockies, Montana to New Mexico.
Habitat: Wet plasces, margins of streams and lakes, from near sea level to lower elevations in the mountains.
Origin: Native
Flowers: July - August
(Juncus alpinoarticulatus)
Distribution: In scattered location on both sides of the Cascades crest in Washington; scattered throughout North America from Alaska to Washington, east across Canada and central U.S. to northeastern North America.
Habitat: Wet meadows, pond and lake shores.
Origin: Native
Flowers: July-September
(Juncus parryi)
Distribution: British Columbia to California, east to Montana and Colorado; in the Olympics and Cascades of Washington
Habitat: Moist places, moderate to high elevations in the mountains
Origin: Native
Flowers: July - September
(Juncus tenuis)
Distribution: Alaska south to Mexico, east across southern Canada and most of the United States.
Habitat: Moist places.
Origin: Native
Flowers: June - September
(Juncus oxymeris)
Distribution: Southwest British Columbia to Caslifornia; in Washington, in the lowlands west of the Cascades.
Habitat: Wet meadows and lake shores.
Origin: Native
Flowers: May - August
(Juncus tenuis)
Distribution: Alaska south to Mexico, east across southern Canada and most of the United States.
Habitat: Moist places.
Origin: Native
Flowers: June - September
(Juncus regelii)
Origin: Native
Flowers: July - August
(Juncus saximontanus)
Origin: Native
Flowers: June - August
(Juncus compressus)
Origin: Introduced
(Juncus breweri)
Origin: Native
(Juncus acuminatus)
Distribution: Mostly west of the Cascades, British Columbia south to California, east to southwest Idaho and Arizona.
Habitat: Ditches, lake margins, meadows and other wet places.
Origin: Native
Flowers: Late May - August
(Juncus laccatus)
Origin: Native
(Juncus brachycarpus)
Origin: Introduced; native to southeastern and midwestern United States
(Juncus falcatus)
Origin: Native
Flowers: Late May - July
(Juncus tenuis)
Distribution: Alaska south to Mexico, east across southern Canada and most of the United States.
Habitat: Moist places.
Origin: Native
Flowers: June - September
(Juncus diffusissimus)
Origin: Introduced from South America
(Equisetum ×mackaii)
Origin: Native
(Equisetum laevigatum)
Origin: Native
(Juncus bulbosus)
Distribution: Introduced at several locations in wsestern Washington; British Columbia south to Oregon, east across northern Canada to the Atlantic Coast; Europe.
Habitat: Sandy or peaty shores of streams and pools.
Origin: Introduced from Eurasia
Flowers: August
(Juncus patens)
Origin: Native
Flowers: June - August
(Juncus supiniformis)
Distribution: Alaska south along the coast west of the Cascades to Mendocino County, California.
Habitat: Marshes, ponds, ditches and rivers, often where submerged early in the season.
Origin: Native
Flowers: July - September
(Juncus orthophyllus)
Origin: Native
Flowers: Late June - August
(Juncus acuminatus)
Distribution: Mostly west of the Cascades, British Columbia south to California, east to southwest Idaho and Arizona.
Habitat: Ditches, lake margins, meadows and other wet places.
Origin: Native
Flowers: Late May - August
(Juncus filiformis)
Distribution: Alaska to northern Oregon, east in Canada to Newfoundland and south to Pennsylvania and Montana.
Habitat: Lake shores and coastal bogs to montane marshes and meadows; in Washington, from near sea level to about 5000 feet elevation.
Origin: Native
Flowers: July - August
(Juncus drummondii)
Distribution: Alaska south to California, east to the Rockies, Alberta to New Mexico.
Habitat: Alpine to subalpine meadows, streambanks, talus slopes and ridges.
Origin: Native
Flowers: July - September
(Juncus tiehmii)
Origin: Native
(Juncus torreyi)
Distribution: British Columbia south, east of the Cascades, to California, east to Ontario and New York.
Habitat: Wet places, especially around lakes and along streams, form the lowlands to the lower mountains.
Origin: Native
Flowers: Late June - August
(Juncus nodosus)
Distribution: East of the Cascades, British Columbia to California, east to Nova Scotia and Maine.
Habitat: Ditches, ponds and wet places.
Origin: Native
Flowers: Late June - August
(Juncus vaseyi)
Origin: Native
(Juncus occidentalis)
Origin: Native
Flowers: June - September
(Elaeagnus angustifolia)
Distribution: Common east of the Cascades in Washington; widely distributed throughout most of North America.
Habitat: Weedy escape, especially in riparian areas; often planted historically as a windbreak.
Origin: Introduced
Flowers: May-July
(Astragalus falcatus)
Origin: Introduced
Flowers: July
(Elymus curvatus)
Origin: Native
(Elymus hirsutus)
Origin: Native
Flowers: June - August
(Elymus canadensis)
Distribution: Alaska south on the east side of the Cascades to California, east to Quebec, north Carolina and Texas
Habitat: Sandy, dry to moist meadows to mountain canyons.
Origin: Native
Flowers: June - August
(Elymus repens)
Distribution: Native to Eurasia; Alaska to Greenland and south to California, Texas, and North Carolina.
Habitat: Disturbed, open areas.
Origin: Introduced
Flowers: June-August
(Secale cereale)
Distribution: Widely cultivated, especially in poor, dry soil, often persistent for more than one season.
Habitat: Roadsides and waste ground.
Origin: Introduced
Flowers: May - July
(Elymus albicans)
Origin: Native
(Psathyrostachys juncea)
Origin: Introduced
(Elymus scribneri)
Origin: Native
Flowers: June - August
(Elymus wawawaiensis)
Origin: Native
(Lolium multiflorum)
Distribution: Introduced and well established in much of temperate North America.
Habitat: Roadsides and waste ground.
Origin: Introduced
Flowers: May - July
(Lolium perenne)
Distribution: Commonly cultivated as a forage plant; escaped and well established in the Pacific Northwest.
Habitat: Old fields, roadsides, and waste places.
Origin: Introduced
Flowers: May - July
(Lolium multiflorum)
Distribution: Introduced and well established in much of temperate North America.
Habitat: Roadsides and waste ground.
Origin: Introduced
Flowers: May - July
(Lolium multiflorum)
Distribution: Introduced and well established in much of temperate North America.
Habitat: Roadsides and waste ground.
Origin: Introduced
Flowers: May - July
(Lolium perenne)
Distribution: Commonly cultivated as a forage plant; escaped and well established in the Pacific Northwest.
Habitat: Old fields, roadsides, and waste places.
Origin: Introduced
Flowers: May - July