Vascular Plants

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


Browse by scientific name:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Scientific names beginning with E:
Eatonella niveawhite Eatonella, white false tickhead
Distribution: Southeast Idaho and southwest Oregon, to Nevada and California; disjunct to central Washington near the Columbia River.
Habitat: Dry, sandy or volcanic desert areas.
Origin: Native
Flowers: May - July
Echinochloa colonaawnless barnyard grass, or jungle-rice
Origin: Introduced from the tropics
Echinochloa crus-gallibarnyard grass, or large barnyard grass
Distribution: Found throughout southern Canada and most of the United States.
Habitat: Cultivted fields and wasteland, usually where moist, especially along irrigation ditches.
Origin: Introduced from Eurasia
Flowers: June - October
Echinochloa crus-pavonisguleaf barnyard-grass
Origin: Introduced
var. crus-pavonis – gulf barnyard grass
Echinochloa muricataAmerican barnyard-grass
Origin: Native?
var. microstachya – American barnyard grass, or watergrass
Echinocystis lobatawild cucumber
Distribution: Chiefly east of the Cascades in Washington; occurring throughout much of North America.
Habitat: Moist bottomlands and thickets.
Origin: Introduced
Flowers: July-September
Echinops exaltatustall globe thistle
Origin: Introduced
Echinops ritrosouthern globe-thistle
Origin: Introduced
ssp. ruthenicus – southern globe thistle
Echinops sphaerocephalusgreat globe thistle
Origin: Introduced
Echium vulgarecommon viper's bugloss
Distribution: Introduced in much of the United States; uncommon in the Pacific Northwest
Habitat: Dry ground in waste places
Origin: Introduced from Mediterranean region
Flowers: June - August
Egeria densaBrazilian waterweed, South American waterweed
Distribution: Introduced from Washington to California, and across the southern half of the United States to the Atlantic; occasional west of the Cascades in Washington and Oregon
Habitat: Commonly used in aquaria, often escaping
Origin: Introduced from South America
Flowers: July - September
Eichhornia crassipeswater hyacinth
Distribution: Known from a few localities in southern Washington; California east along the southern part of the U.S. to Florida.
Habitat: Ponds, ditches, canals.
Origin: Introduced from tropical America
Flowers: April-September
Elaeagnus angustifoliaRussian-olive
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
Elaeagnus commutataAmerican silver-berry, wolfberry
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Quebec, south into Idaho, Montana and Utah.
Habitat: Gravel benches and scabland, commonly along watercourses.
Origin: Native
Flowers: June-July
Elaeagnus umbellataautumn olive
Distribution: Scattered localities in Washington; widely distributed east of the Mississippi River in the U.S.
Habitat: Introduced from eastern Asia as ornamental shrub, occasionally escaping in disturbed areas and waste ground.
Origin: Introduced
Flowers: June-July
Elatine californicaCalifornia waterwort
Origin: Native
Elatine chilensisChilean waterwort
Origin: Native
Eleocharis acicularisneedle spikerush
Distribution: Circumboreal, south to Florida and Mexico, found in the Pacific Northwest.
Habitat: Marshes, muddy shores, and other wet places.
Origin: Native
Flowers: June - September
Eleocharis atropurpureapurple spikerush
Origin: Native
Eleocharis bellapretty spikerush
Origin: Native
Flowers: June - September
Eleocharis bolanderiBolander's spikerush
Origin: Native
Eleocharis coloradoensisdwarf spike-rush
Origin: Native
Eleocharis engelmanniiEngelman spikerush
Distribution: Widespread in the northern hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: June - September
Eleocharis erythropodabald spike-rush, redfoot spike-rush
Origin: Native
Eleocharis geniculatacapitate spike-rush
Origin: Native
Eleocharis macrostachyacreeping spikerush
Origin: Native
Eleocharis mamillatasoft-stem spike-rush
Origin: Native
Eleocharis obtusablunt spikerush
Origin: Native
Eleocharis ovataovoid spikerush
Distribution: Widespread in the Northern Hemisphere; found throughout the Pacific Northwest.
Habitat: Marshes and other wet places, from sea level to moderate elevagtions in the mountains.
Origin: Native
Flowers: June - September
Eleocharis palustriscommon spikerush
Distribution: Widespread in temperate amd cold-temperate regions of the Northern hemisphere; common in the Pacific Northwest.
Habitat: Wet places from sea level to moderate elevations in the mountains; tolerant of alkali.
Origin: Native
Flowers: May - August
Eleocharis parvulalittle-head spikerush
Distribution: Vancouver Island, British Columbia, to Newfoundland, south to northern South America.
Habitat: Wet, saline or alkaline soils.
Origin: Native
Flowers: June - September
Eleocharis quinqueflorafew-flowered spike-rush
Distribution: Circumboreal, south in North America to California and New Jersey.
Habitat: Bogs and other wet places, from the lowlands to high elevations in the mountains.
Origin: Native
Flowers: June - August
Eleocharis rostellatawalking sedge, beaked spikerush
Origin: Native
Flowers: June - August
Eleocharis suksdorfianaSuksdorf spikerush
Origin: Native
Eleocharis uniglumisslender spike-rush
Origin: Native
Eleusine indicagoosegrass
Distribution: Uncommon weed in western Oregon; more common in California and eastern United States.
Habitat: Waste ground and roadsides.
Origin: Introduced from Africa
Flowers: July - August
Eleusine tristachya
Origin: Introduced
Elliottia pyrolifloracopperbush
Distribution: Occurring west of the Cascades in Washington; Alaska south to Oregon.
Habitat: Moist forests and stream banks at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-July
Elmera racemosaElmera
Distribution: In the Olympic and Cascade Mountains of Washington; Washington south to Oregon.
Habitat: Rock crevices and rocky ridges and slopes, mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
var. puberulenta – fuzzy elmera
var. racemosa – common elmera
Elodea canadensisCanadian, Rocky Mountain, or common waterweed
Distribution: Throughout most of the United States
Habitat: Common in slow-moving, often alkaline water, in the Pacific Northwest
Origin: Native
Flowers: July - September
Elodea nuttalliiNuttall's waterweed, western waterweed
Distribution: Occasional in Washington, Oregon, Idaho and California; more common east to Maine and Virginia.
Habitat: Fresh to slightly brackish water.
Origin: Native
Flowers: July - September
×Elyhordeum macounii
Origin: Native
×Elyleymus aristatus
Origin: Native
Elymus albicansMontana wild rye
Origin: Native
Elymus canadensisCanadian wild rye
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
var. canadensis – nodding wild rye
Elymus curvatusbeardless wild rye, awnless wildrye
Origin: Native
Elymus elymoidesbottlebrush, squirreltail
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
ssp. brevifolius – longleaf squirreltail
ssp. elymoides – bottlebrush squirreltail, California squirreltail
ssp. hordeoides – bottlebrush squirreltail
Elymus glaucusblue wild-rye
Distribution: Southern Alaska south to California, east to Ontario and Indiana.
Habitat: Prairies, open woods, and dry to moist hillsides, from the lowlands to mid-elevations in the mountains.
Origin: Native
Flowers: June - August
ssp. glaucus – blue wildrye
ssp. virescens – blue wildrye
Elymus ×hansenii
Origin: Native
Elymus hirsutusboreal wild rye
Origin: Native
Flowers: June - August
Elymus lanceolatus
Origin: Native
ssp. lanceolatus – thick-spiked wheatgrass
ssp. psammophilus – sand-dune wheatgrass
ssp. riparius – stream bank wheatgrass
Elymus multisetusbig squirreltail
Origin: Native
Flowers: May - August
Elymus ×pseudorepensfalse quackgrass
Origin: Native
Elymus repenscreeping wild rye
Distribution: Native to Eurasia; Alaska to Greenland and south to California, Texas, and North Carolina.
Habitat: Disturbed, open areas.
Origin: Introduced
Flowers: June-August
Elymus scribneriScribner's wild rye
Origin: Native
Flowers: June - August
Elymus sierraeSierra wheatgrass
Origin: Native
Elymus trachycaulusslender wheatgrass
Origin: Native
ssp. trachycaulus – bearded wheatgrass
Elymus violaceusarctic wheatgrass, bearded wheatgrass
Origin: Native
Elymus wawawaiensiswawawai wild rye
Origin: Native
Empetrum nigrumcrowberry
Distribution: In the Cascades and Olympic Mountains of Washington; Alaska south to California.
Habitat: Exposed rocky bluffs, but also in peat bogs.
Origin: Native
Flowers: May-July
Enemion halliiWillamette false rue-anemone
Distribution: Lewis and Thurston Counties, Washington, south in the Columbia River Gorge and Willamette Valley to Marion County, Oregon
Habitat: Moist woods and streambanks at low elevations
Origin: Native
Flowers: June - July
Epilobium anagallidifoliumalpine willowherb, pimpernel willowherb
Distribution: Both sides of the Cascades in Washington; Alaska to Greenland, throughout western and northeastern North America.
Habitat: Alpine meadows, streambanks, and riparian areas.
Origin: Native
Flowers: June-September
Epilobium brachycarpumautumn willowherb, tall annual willowherb
Distribution: Throughout Washington; British Columbia south to California, east to Wisconsin in the north and New Mexico in the south.
Habitat: Common in dry, open meadows and grasslands to lightly wooded areas.
Origin: Native
Flowers: July-August
Epilobium campestresmooth willowherb
Distribution: Central and eastern portion of Washington; British Columbia east to Saskatchewan, south to Arizona and California.
Habitat: Mud flats, vernal pools.
Origin: Native
Flowers: June-July
Epilobium ciliatumciliate willowherb, Watson's willowherb
Distribution: Widely distributed throughout all of Washington; widespread throughout much of North America.
Habitat: Moist soil from lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Epilobium clavatumtalus willowherb
Distribution: Both sides of the Cascades in Washington; Alaska to California, east to Montana and Colorado.
Habitat: Moist meadows and talus slopes in the mountains, subalpine.
Origin: Native
Flowers: June-September
Epilobium densiflorumdense-flower willowherb
Distribution: Both sides of the Cascades in Washington; Vancouver Island, British Columbia south to Baja California, east to Montana and Nevada.
Habitat: Boggy areas with standing water in winter and spring; occasional streamside.
Origin: Native
Flowers: July-September
Epilobium glaberrimumsmooth willowherb
Distribution: Widely distributed throughtout much of the mountainous areas of Washington; British Ciolumbia south to California, east to Montana, Idaho and Colorado.
Habitat: Wet places at mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Epilobium glandulosumciliate willowherb
Distribution: Both sides of the Cascades in Washington; Alaska south to California, east to the Rocky Mts.; eastern North America.
Habitat: Moist meadows and riparian areas from coastal elevations to subalpine.
Origin: Native
Flowers: June-August
Epilobium hallianumglandular willowherb, Hall's willowherb
Distribution: Occurring in the mountains throughout Washington; occurring throughout western North America.
Habitat: Moist to wet areas from montane to alpine habitats.
Origin: Native
Flowers: June-August
Epilobium hirsutumcodlins-and-cream, fiddle grass
Distribution: Introduced occasionally west of the Cascades and near Bingen in Washington; British Columbia south to Oregon; upper central and northeastern North America.
Habitat: Garden escape in wet areas.
Origin: Introduced
Flowers: June-August
Epilobium hornemanniiHornemann's willow-herb
Distribution: Widely distributed throughout Washington; Alaska south to California, east to South Dakota and New Mexico.
Habitat: Wet rocky areas and streambanks, low to subalpine elevations.
Origin: Native
Flowers: June-September
ssp. hornemannii – alpine willowherb
Epilobium komarovianumbronzy willow-herb
Origin: Introduced
Epilobium lactiflorumwhite-flower willowherb
Distribution: Widely distributed on both sides of the Cascades in Washington; Alaska south to California, east to Montana, Colorado and New Mexico.
Habitat: Wet meadows and seeps, mid- to high elevations in the mountains.
Origin: Native
Flowers: June-September
Epilobium lanceolatum
Origin: Introduced
Epilobium leptocarpumslender-fruit willowherb
Origin: Native
Epilobium leptophyllumbog willowherb
Origin: Introduced
Epilobium luteumyellow willowherb
Distribution: In the Olympics and Cascades in Washington; Alaska south to California.
Habitat: Stream banks and wet areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: July-September
Epilobium minutumCalifornia willowherb, chaparral willowherb, small-flowered willowherb
Distribution: Both sides of the Cascades crest in Washington; common from British Columbia south to California, east to Montana.
Habitat: Dry or gravelly soil, sea level to mid-elevations in the mountains.
Origin: Native
Flowers: April-August
Epilobium mirabileOlympic Mountain willowherb
Origin: Native
Epilobium montanumbroad-leaved willow-herb
Origin: Introduced
Epilobium nummulariifolium
Origin: Introduced
Epilobium obscurumdwarf willow-herb
Origin: Introduced
Epilobium oregonenseOregon willowherb
Distribution: Both sides of the Cascades in Washington; British Columbia south to Arizona, east to Montana and Colorado.
Habitat: Streambanks, bogs, and wet meadows from moderate elevations in mountains to alpine.
Origin: Native
Flowers: June-September
Epilobium palustremarsh willowherb
Distribution: Both sides of the Cascades in Washington; Alaska east to the Atlantic coast; south in the Rocky Mountains to Colorado.
Habitat: Wet soil, often in bogs.
Origin: Native
Flowers: June-August
Epilobium ×pulchrum
Origin: Native
Epilobium saximontanumRocky Mountain willowherb
Origin: Native
Epilobium torreyibrook willowherb
Distribution: East of the Cascades in Washington from Kittitas County south; both sides of the Cascades in Oregon, south to central California, east to Idaho and Nevada.
Habitat: Places that are soggy with standing water in winter and spring, drying in summer.
Origin: Native
Flowers: June-July
Epilobium ×treleasianum
Origin: Native
Epipactis giganteagiant helleborine
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to Baja California, east to the Rocky Mountains.
Habitat: Stream banks, lake margins, around springs and seeps, especially in thermal waters in otherwise desert regions.
Origin: Native
Flowers: April-July
Epipactis helleborinebroad-leaved helleborine, garden helleborine
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California, in scattered locations across central Canada and the U.S.; the Upper Midwest and Northeast U.S.
Habitat: Moist to dry, shady woods, disturbed sites.
Origin: Introduced from Eurasia
Flowers: June-October
Equisetum arvensecommon horsetail, field horsetail
Distribution: Cosmopolitan; throughout the Pacific Northwest
Habitat: Moist to moderately dry areas
Origin: Native
Equisetum ×ferrissiiFerriss' scouring rush
Origin: Native
Equisetum fluviatileor river horsetail, swamp, water
Distribution: Alaska to Oregon, east across southern Canada and the northern tier of states in the United States.
Habitat: Shallow water, marshes and bogs, along muddy shores, from the lowlands to moderate elevations in the mountains.
Origin: Native
Equisetum hyemalescouringrush horsetail , common scouring-rush
Distribution: Circumboreal; throughout the Pacific Northwest
Habitat: Moist to wet areas, lowlands to moderate elevations in the mountains
Origin: Native
ssp. affine – common scouring rush, Dutch rush, prairie scouring rush
Equisetum laevigatumsmooth scouring rush
Origin: Native
Equisetum ×litoraleshore horsetail
Origin: Native
Equisetum ×mackaiismall scouring rush
Origin: Native
Equisetum ×nelsoniiNelson's horsetail
Origin: Native
Equisetum palustremarsh horsetail
Distribution: Circumboreal, south south in North America to southern Washington, northern Idaho, Nebraska and Pennsylvania.
Habitat: Streambanks, wet meadows, and marshes, from the lowlands to moderate elevations in the mountains.
Origin: Native
Equisetum pratensemeadow horsetail
Origin: Native
Equisetum scirpoidessedgelike horsetail, dwarf scouring rush
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 sylvaticumwood horsetail, woodland horsetail
Distribution: Alaska to Washington, east across southern Canada and northern United States to the Atlantic Coast
Habitat: Shady coniferous forests, bog edges and swamps
Origin: Native
Equisetum telmateiagiant horsetail
Distribution: British Columbia to California, east to Idaho
Habitat: Moist areas in the lowlands
Origin: Native
ssp. braunii – giant horsetail, great horsetail
Equisetum variegatumvariegated horsetail, northern scouring-rush
Distribution: Alaska to Oregon, east across southern Canada and the northern third of the United States
Habitat: Wet places, sea level to alpine
Origin: Native
ssp. alaskanum – Alaskan scouring rush
ssp. variegatum – variegated horsetail, northern scouring rush
Eragrostis cilianensisstinkgrass
Distribution: Central Washington south ot California, east to Maine.
Habitat: Disturbed areas and waste land, and along streams and pond margins.
Origin: Introduced from Europe
Flowers: June - October
Eragrostis curvulaweeping lovegrass
Distribution: In scattered locations across Washington; occurring from West to East Coast of U.S., typically in the southern half of the country.
Habitat: Distrubed areas where open and forest edge.
Origin: Introduced from southern Africa
Flowers: June-July
Eragrostis hypnoidesteal love grass
Distribution: In Washington, chiefly west of the Cascades, and along the Columbia and Snake Rivers; widespread in central and eastern United States.
Habitat: Mud flats along streams, ponds and lakes.
Origin: Native
Flowers: June - September
Eragrostis lutescenssix-weeks love grass
Origin: Native
Flowers: July - October
Eragrostis mexicanaMexican lovegrass
Origin: Introduced
ssp. virescens – Mexican lovegrass, orcutt's lovegrass
Eragrostis minorlittle lovegrass
Origin: Introduced from Europe
Eragrostis pectinaceatufted lovegrass
Origin: Native
Flowers: June - September
var. pectinacea – purple eragrostis, tufted eragrostis
Eragrostis pilosaIndia lovegrass
Origin: Introduced
Flowers: October
var. pilosa – India lovegrass
Erechtites glomeratuscut leaf burnweed, New Zealand burnweed, Australian fireweed
Origin: Introduced
Erechtites hieraciifoliuseastern burnweed, eastern fireweed
Distribution: Occasionally introduced west of the Cascades, British Columbia to Oregon
Habitat: Roadside weed
Origin: Native in eastern United States
Flowers: August - September
var. hieraciifolius – American burnweed
Erechtites minimusAustralian bornweed, toothed coast burnweed
Origin: Introduced
Eremogone aculeataneedle-leaf sandwort, prickly sandwort
Distribution: Known from Kittitas County in Washington; Beaverhead County, Montana, to northeast Oregon, south to Nevada, Utah, and northeast California.
Habitat: Gravelly sagebrush-covered hills at 6000 feet elevation to rocky alpine slopes.
Origin: Native
Flowers: June-August
Eremogone capillarismountain sandwort, thread-leaved sandwort
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to northern Oregon and northern Nevada, east to Alberta and Montana.
Habitat: Sagebrush plains to rocky subalpine slopes.
Origin: Native
Flowers: June-August
var. americana – fescue sandwort, thread-leaved sandwort
Eremogone congestaballhead sandwort, capitate sandwort
Distribution: Okanogan County, Washington, south on the east side of the Cascades to Oregon and the Sierra Nevada of California, east to the Rockies.
Habitat: Sagebrush desert to alpine slopes.
Origin: Native
Flowers: June - August
var. cephaloidea – ballhead sandwort, sharptip sandwort
var. congesta – ballhead sandwort
var. prolifera – ballhead sandwort
Eremogone franklinii
Distribution: East of the Cascades in Washington; Washington south to Oregon, east to Idaho.
Habitat: Sand dunes, scabland and sagebrush slopes.
Origin: Native
Flowers: May-June
var. franklinii – Franklin's sandwort
var. thompsonii – Thompson's sandwort
Eremopyrum triticeumannual false wheat grass
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to Arizona, east to the Rocky Mountains and Great Plains.
Habitat: Dry wasteland, disturbed areas.
Origin: Introduced
Flowers: May-July
Eremothera boothiiBooth's sun cup, Booth's evening primrose
Origin: Native
ssp. boothii – Booth's sun cup, Booth's evening primrose, Booth's suncup
Eremothera minorsmall-flowered evening primrose, green river suncup
Distribution: East of the Cascades in Washington; Washington south to California, east to Montana and Colorado.
Habitat: Sagebrush desert, often where vernally moist
Origin: Native
Flowers: April-June
Eremothera pygmaeadwarf suncup
Distribution: East of the Cascades in Washington in central part of the state; Washington south to Oregon, east to Idaho.
Habitat: Vernally moist areas in open, sagebrush desert
Origin: Native
Flowers: April-June
Eriastrum wilcoxiiWilcox's woolstar
Origin: Native
Flowers: May - August
Ericameria bloomerirabbitbush heath goldenrod, rabbitbrush goldenweed
Distribution: Southern British Columbia and northeast Washington, south in the Cascades and the mountains of eastern Oregon to California.
Habitat: Dry, rocky slopes and open woods, from the foothills to moderate elevations in the mountains.
Origin: Native
Flowers: July - September
Ericameria greeneiGreene's heath goldenrod, Greene's goldenweed
Distribution: East of the Cascade crest in Washington; from northern Washington to California, and in the Wallowa Mountains of Oregon.
Habitat: Open or sparsely wooded slopes at rather high elevations in the mountains.
Origin: Native
Flowers: July-August
Ericameria nauseosacommon rabbit-brush
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
var. nana – little rabbitbrush
var. speciosa – rubber rabbitbrush
Ericameria resinosaColumbian heath goldenrod, Columbia goldenweed
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon, east to Idaho.
Habitat: Basalt cliffs and rock crevices in the plains and foothills, extending up to 6000 feet on the east slope of the Cascades.
Origin: Native
Flowers: July-September
Erigeron acris
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to California, east to South Dakota.
Habitat: Mid- to high elevations in mountain meadows.
Origin: Native
Flowers: June-September
var. kamtschaticus – bitter fleabane
Erigeron aliceaeEastwood's daisy, Alice's fleabane
Distribution: In the Olympic Mountains of Washington, in the Cascades of Oregon, and in the Siskiyou Mountains of Oregon and California.
Habitat: Moist to fairly dry, sandy, open areas at mid-elevations in the mountains.
Origin: Native
Flowers: June - August
Erigeron annuussweet scabrous erigeron, annual fleabane, eastern daisy fleabane
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; native to eastern North America and widely introduced in other areas of North America.
Habitat: Weed of moist, disturbed soil.
Origin: Native? Introduced in OR, status as a native in BC uncertain
Flowers: June-September
Erigeron aureusgolden daisy, golden fleabane
Distribution: Both sides of the Cascades in Washington; British Columbia south to Washington, east to Alberta.
Habitat: Exposed rocky areas, cliffs, and ridges, often at high elevations in the mountains.
Origin: Native
Flowers: June-August.
Erigeron basalticusbasalt fleabane
Distribution: Selah Creek area and north in the Yakima River canyon, Yakima and Kittitas Counties, Washington.
Habitat: Cliff crevices in rocky canyons.
Origin: Native
Flowers: May-October
Erigeron bloomeriscabland fleabane
Distribution: Chiefly east of the Cascades, central Washington to California, east to Idaho and Nevada
Habitat: Dry, open, rocky areas at low to moderate elevations
Origin: Native
Flowers: June - August
var. bloomeri – bloomer's daisy, scabland fleabane
Erigeron caespitosustufted daisy, tufted fleabane
Distribution: Alaska and Yukon to eastern Washington and Idaho, south to Arizona.
Habitat: Dry, open, and often rocky places.
Origin: Native
Flowers: June - August
Erigeron chrysopsidisgolden daisy, dwarf yellow fleabane
Distribution: Occurring east of the Cascade Mountains crest in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Shrub-steppe to open slopes of forests at middle elevations.
Origin: Native
Flowers: May-July
var. chrysopsidis – golden daisy, dwarf yellow fleabane, golden fleabane
Erigeron composituscutleaf daisy, dwarf mountain fleabane, fernleaf fleabane, trifid mountain fleabane
Distribution: British Columbia to Oregon, east to Montana
Habitat: Sandy riverbanks at low elevations to rocky outcrops at mid- to high elevation in the mountains
Origin: Native
Flowers: May - August
Erigeron corymbosusfoothill daisy, longleaf fleabane
Distribution: Cheifly east of the Cascades, southern British Columbia to eastern Oregon, east to Montana and Wyoming.
Habitat: Open, usually dry places, often among sagebrush.
Origin: Native
Flowers: June - July
Erigeron davisiiDavis's daisy, Davis's fleabane
Origin: Native
Erigeron disparipilusSnake River daisy, white cushion fleabane
Distribution: Near the Snake River from extreme southeast Washington to Owyhee County, Idaho
Habitat: Dry, rocky hillsides
Origin: Native
Flowers: May - July
Erigeron divergensdiffuse daisy, spreading fleabane
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Great Plains of the U.S.
Habitat: Meadows, grasslands, riverbanks, and forest openings from low to moderate elevations.
Origin: Native
Flowers: May-July
Erigeron eatoniiEaton's daisy
Distribution: Chiefly east of the Cascades, central Washington south to California and Arizona and east to Wyoming.
Habitat: Open places in the mountains and foothills.
Origin: Native
var. villosus – Eaton's shaggy daisy, Eaton's shaggy fleabane
Erigeron elatusswamp fleabane
Distribution: Occurring in north-central region of Washington; Alaska south to Washington, east across Canada to the Atlantic Coast.
Habitat: Wet meadows, edges of ponds, forested wetlands.
Origin: Native
Flowers: July-August
Erigeron elegantulusvolcanic daisy, blue dwarf fleabane
Origin: Native
Erigeron filifoliusPeck's threadleaf fleabane
Distribution: Chiefly east of the Cascades, British Columbia to Oregon, east to Montana
Habitat: In shrub-steppe of foothills and plains, often with sagebrush
Origin: Native
Flowers: May - July
Erigeron flettiiFlett's fleabane, Olympic Mt. fleabane
Distribution: Olympic Mountains of Washington at high elevations.
Habitat: Cliffs and other rocky places.
Origin: Native
Flowers: July - August
Erigeron glacialisglacier fleabane
Distribution: Widely distributed in the mountains throughout Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist, open areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: July-September
var. glacialis – peregrine fleabane
Erigeron grandifloruslarge-flowered fleabane
Origin: Native
Erigeron howelliiHowell's daisy, Howell's fleabane
Distribution: Soouth side of the Columbia River Gorge in Oregon and Skamania County, Washington
Habitat: Moist, rocky places in the lowlands.
Origin: Native
Flowers: April - June
Erigeron inornatusCalifornia rayless daisy
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Nevada.
Habitat: Dry slopes and forest openings, often where sandy or rocky.
Origin: Native
Flowers: July-August
var. inornatus – California rayless daisy, unadorned fleabane
Erigeron karvinskianus
Origin: Introduced
Erigeron leibergiiLeiberg's fleabane
Distribution: In the Cascade and Wenatchee Mountains of Okanogan, Chelan and Kittitas Counties; British Columbia south to Washington.
Habitat: Cliffs and rocky places at moderate to high elevations in the mountains.
Origin: Native
Flowers: June-August
Erigeron linearisdesert yellow daisy, lineleaf fleabane
Distribution: East of the Cascades in Washington; southern British Columbia to Oregon.
Habitat: Dry, open, often rocky areas at low to mid-elevations
Origin: Native
Flowers: May-July
Erigeron lonchophyllusshort rayed daisy, spear leaved fleabane
Distribution: East of the Cascades, British Columbia to California, east to Quebec and North Dakota.
Habitat: Damp meadows and other moist places at high elevations in the mountains.
Origin: Native
Flowers: July - August
Erigeron nivalisnorthern daisy
Distribution: Occurring on both sides of the Cascades crest in Washington;
Habitat: Moist open areas from streambanks to subalpine meadows. Alaska to California, east to the Rocky Mountains.
Origin: Native
Flowers: June-August
Erigeron oreganusgorge daisy, Oregon fleabane
Distribution: Columbia River Gorge, more common on the Oregon side.
Habitat: Moist shady cliffs and ledges.
Origin: Native
Erigeron peregrinuswandering daisy, wandering fleabane
Distribution: Common from Alaska to California, east to Colorado
Habitat: Moist, open areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: July - August
Erigeron philadelphicusPhiladelphia daisy, Philadelphia fleabane
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Moist, open forests at low to mid-elevations.
Origin: Native
Flowers: April-August
var. philadelphicus – Philadelphia daisy, Philadelphia fleabane
Erigeron piperianusPiper's fleabane
Distribution: Columbia plains of south-central and southeast Washington
Habitat: Dry, open places, often in sandy soil among sagebrush.
Origin: Native
Flowers: May - June
Erigeron poliospermushairy-seeded daisy, cushion fleabane
Distribution: East of the Cascades crest in Washington; British Columbia south to Oregon, east to Idaho.
Habitat: Dry, open, often rocky areas at low elevations.
Origin: Native
Flowers: April-June
var. cereus – Kittitas fleabane
var. poliospermus – hairy seeded daisy, cushion fleabane
Erigeron pumilusshaggy fleabane
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Great Plains.
Habitat: Open places in the foothills, valleys and plains, often among sagebrush.
Origin: Native
Flowers: May-July
var. intermedius – shaggy fleabane
var. pumilus – shaggy fleabane
Erigeron salishiiSalish daisy, star peak fleabane
Distribution: British Columbia and Washington.
Habitat: Cliffs, ridges, ledges and gravelly slopes at mid- to high elevations in the mountains.
Origin: Native
Flowers: July - September
Erigeron speciosusshowy daisy, triple nerved daisy, showy fleabane, splendid fleabane, triple nerved fleabane
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, Nevada, and Arizona, east to the Rocky Mountains and South Dakota.
Habitat: Prairies and forest openings from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Erigeron strigosusbranched daisy, daisy fleabane
Distribution: Widely distributed in Washington; widespread throughout much of North America.
Habitat: Moderately dry places at low to moderate elevations.
Origin: Native
Flowers: May-October
var. septentrionalis – prairie fleabane
var. strigosus – branching daisy, daisy fleabane
Erigeron subtrinervisthree-veined fleabane
Distribution: Washington to the Dakotas, south to Colorado, but not found in Oregon
Habitat: Moderately dry, open places at moderate to mid-elevations in the mountains
Origin: Native
Flowers: July - August
Eriogonum baileyiBailey's buckwheat
Origin: Native
var. baileyi – Bailey's buckwheat
Eriogonum cernuumnodding buckwheat
Origin: Native
Eriogonum codiumbasalt desert buckwheat, Umptanum buckwheat
Distribution: Found only in Benton County Washington.
Habitat: Volcanic soils in sagebrush along the Columbia River.
Origin: Native
Flowers: May-August
Eriogonum compositumarrow-leaf buckwheat, northern buckwheat
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to Idaho.
Habitat: Dry, open areas, rocky slopes and cliffs from low to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
var. compositum – northern buckwheat
var. lancifolium – northern buckwheat
var. leianthum – northern buckwheat
Eriogonum douglasiiDouglas's buckwheat
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests, often on lithosol.
Origin: Native
Flowers: May-July
var. douglasii – Douglas' buckwheat
Eriogonum elatumrush buckwheat, tall buckwheat
Distribution: East of the Cascades crest in Washington; Washington south to California, less commonly east to Idaho.
Habitat: Open sagebrush desert in the foothills to rather high elevations in the mountains.
Origin: Native
Flowers: June-August
var. elatum – tall buckwheat
Eriogonum flavumyellow buckwheat
Distribution: Alaska and British Columbia, south in extreme eastern Washington and Oregon, east to Alberta and south to Colorado
Habitat: Open knolls in grasslands to alpine ridges and scree
Origin: Native
Flowers: Late June - August
var. piperi – Piper's buckwheat, yellow buckwheat
Eriogonum heracleoidesbractless parsnip-flower wild buckwheat, parsnip-flowered buckwheat, parsnip-flowered eriogonum
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to south California, east to Wyoming and Nevada.
Habitat: Deeper soil of shrub-steppe to ponderosa pine forests and rocky ridges at mid-elevation in the mountains.
Origin: Native
Flowers: May-July
Eriogonum maculatumspotted buckwheat
Origin: Native
Eriogonum marifoliummountain buckwheat
Distribution: Chiefly on the east slope of the Cascades, Linn County, Oregon, south to Siskiyou County, California.
Habitat: Gravelly flats in lodgepole and ponderosa pine forests to 9000-foot alpine ridges and talus slopes.
Origin: Native
Flowers: June - July
var. marifolium – marum-leaf wild buckwheat, mountain buckwheat
Eriogonum microthecumslenderbush buckwheat
Distribution: East edge of the Cascades in Washington to the southern Sierra of California, east to Montana, Colorado and New Mexico.
Habitat: Sandy deserts to lower mountain slopes, chiefly with sagebrush.
Origin: Native
Flowers: June - August
var. laxiflorum – slenderbush buckwheat
Eriogonum niveumsnow buckwheat
Distribution: East of the Cascades in Washington; British Columbia south to Oregon, east to Idaho.
Habitat: Sagebrush desert, dry ponderosa pine forest openings, in deep or sandy soil.
Origin: Native
Flowers: June-September
Eriogonum nudumbare-stem buckwheat, naked buckwheat
Distribution: Chiefly east of the Cascades crest in Washington; Washington south to California and Nevada.
Habitat: Sandy or rocky places from the lowlands to subalpine.
Origin: Native
Flowers: June-August
var. nudum – barestem buckwheat, naked buckwheat
Eriogonum ovalifoliumcushion buckwheat, oval-leaved eriogonum
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Sagebrush deserts, juniper and ponderosa pine forests, to alpine ridges.
Origin: Native
Flowers: May-August
var. nivale – Sierra cushion buckwheat
var. ovalifolium – cushion wild buckwheat
var. purpureum – purple cushion wild buckwheat
Eriogonum pyrolifoliumalpine buckwheat, oarleaf buckwheat
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Montana.
Habitat: Open, often rocky areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: July-September
Eriogonum sphaerocephalumrock buckwheat, round-headed eriogonum
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
var. halimioides – rock buckwheat
var. sphaerocephalum – rock buckwheat
var. sublineare – scabland wild buckwheat
Eriogonum strictumstrict buckwheat
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
var. anserinum – Goose Lake wild buckwheat
var. proliferum – strict buckwheat
var. strictum – strict buckwheat
Eriogonum thymoidesthyme buckwheat, thyme-leaf wild buckwheat
Distribution: East of the Cascades in Washington; central Washington south to Oregon along east side of the Cascades, east to Idaho.
Habitat: Sagebrush deserts, dry ponderosa pine forest openings, open ridges in lower mountains.
Origin: Native
Flowers: April-June
Eriogonum umbellatumsulfur buckwheat, sulfurflower
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
var. devestivum – emperor's sulfur flower
var. ellipticum – sulfur flower
var. haussknechtii – sulfur flower
var. hypoleium – sulfur flower
var. majus – subalpine sulfur flower
var. sandbergii – Sandberg's sulfur flower
Eriogonum vimineumbroom buckwheat
Distribution: East of the Cascades in Washington; Washington south to California, east to Idaho, Utah and New Mexico.
Habitat: Sagebrush deserts and dry ponderosa pine forest openings; tolerant of dry, disturbed conditions.
Origin: Native
Flowers: June-September
Eriophorum angustifoliummany-spiked bog cotton, many-spiked cotton-grass
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
ssp. angustifolium – many-spiked cottongrass
Eriophorum chamissonisChamisso's cotton-grass, russet cottongrass
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Swamps and other wet places at moderate elevations in the mountains, descending to sea level along the coast.
Origin: Native
Flowers: May-August
Eriophorum gracileslender cottongrass
Distribution: Alaska, Canada and the northern half on the United States
Habitat: Wet places, mid- to high elevation in the mountains
Origin: Native
Flowers: May - August
Eriophorum virginicumtawny cottongrass
Origin: Introduced
Eriophorum viridicarinatumtassel cottongrass
Origin: Native
Flowers: June - July
Eriophyllum lanatumcommon woolly sunflower
Distribution: Widely distributed throughout Washington; British Columbia to California, east Montana, Wyoming, and Utah.
Habitat: Dry, open, often rocky areas at low to mid-elevations.
Origin: Native
Flowers: May-August
var. integrifolium – Oregon sunshine
var. lanatum – common eriophyllum, common wooly sunflower
Eritrichium argenteumpale alpine forget-me-not
Origin: Native
Flowers: June - August
Erodium botryslongbeak stork's bill
Origin: Introduced
Erodium cicutariumcommon stork's bill
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Dry plains and hillsides, low to moderate elevations.
Origin: Introduced from Europe
Flowers: April-July
Erodium moschatumgreenstem filaree
Distribution: Occurring in a few scattered locations in Washington; Washington south to California and Arizona, also in northeastern North America.
Habitat: Occasional escape from cultivation.
Origin: Introduced
Flowers: April-September
Eruca vesicaria
Distribution: Introduced sparingly in the United States, mostly in California on the west coast; in Klickitat County and possibly a few other places in Washington.
Habitat: Grain fields and waste ground.
Origin: Introduced from Eurasia
Flowers: May - June
ssp. sativa – garden rocket
Erucastrum gallicumdog mustard, hairy rocket
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
Eryngium articulatumbee-thistle, beefthistle eryngo
Origin: Native
Flowers: July - September
Eryngium petiolatumOregon eryngo, rush-leaf eryngo
Distribution: Chiefly along the Columbia River in Washington, south to the Willamette Valley.
Habitat: Low ground, especially in places submerged in spring and drier in summer.
Origin: Native
Flowers: June-August
Eryngium planumblue eryngo
Origin: Introduced
Erysimum arenicolasand-dwelling wallflower
Distribution: In the Olympics, Cascades, and Blue mountains of Washington; British Columbia south to Oregon.
Habitat: Open ridges and rock crevices, moderate to high elevations in the mountains.
Origin: Native
Flowers: June-September
Erysimum capitatum
Distribution: On both sides of the Cascades in Washington; Alaska south to California, east to Ohio and Texas.
Habitat: Often in sandy soil, plains to moderate elevations in the mountains.
Origin: Native
Flowers: May-July
var. capitatum – prairie rocket, rough wallflower
Erysimum cheiranthoidestreacle mustard, wormseed wallflower
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including fields, roadsides and wastelots, often where moist.
Origin: Introduced from Eurasia
Flowers: June-August
Erysimum cheiriAegean wallflower
Distribution: West of the Cascades in Washington; scattered locations in western and eastern North America.
Habitat: Disturbed areas, often escaped from cultivation.
Origin: Introduced
Flowers: April-June
Erysimum inconspicuumprairie rocket, small-flowered rocket, small-flowered rocket rocket, small wallflower
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 occidentalepale wallflower, western wallflower
Distribution: East of the Cascades in Washington; Washington to Nevada, east to Idaho.
Habitat: Sagebrush hills and valleys.
Origin: Native
Flowers: March-May
Erysimum repandumspreading wallflower
Distribution: East of the Cascades in Washington; distributed throughout much of North America.
Habitat: Wasteland in dry areas, plains and lower mountains.
Origin: Introduced from Eurasia
Flowers: April-June
Erythranthe alsinoideschickweed monkey-flower, wing-stem monkey-flower
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California.
Habitat: Shady, vernally (springtime) moist places on cliffs and ledges, especially at low elevations; often growing in moss mats.
Origin: Native
Flowers: April-June
Erythranthe ampliataNez Perce monkeyflower
Origin: Native
Erythranthe arvensisfield monkey-flower
Origin: Native
Erythranthe breviflorashort-flower monkey-flower
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to Idaho, Montana, and Wyoming.
Habitat: Moist and wet open areas at low to moderate elevations.
Origin: Native
Flowers: May-July
Erythranthe breweriBrewer's monkey-flower
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east to Montana and Colorado.
Habitat: Dry to moist open woods and meadows at mid-elevations in the mountains.
Origin: Native
Flowers: June-August
Erythranthe caespitosalarge mountain monkey-flower
Distribution: Occurring in the Olympics and Cascades mountains of Washington; British Columbia south to Oregon, east to Idaho.
Habitat: Wet meadows and wet, rocky slopes at high elevations in the mountains.
Origin: Native
Flowers: July-September
Erythranthe cardinalisscarlet monkey-flower
Distribution: Only known from a few locations in Washington; Washington south to California, east to the southern Rocky Mountains.
Habitat: Streambanks, where escaped from cultivation.
Origin: Introduced?
Flowers: May-August
Erythranthe decorasharp-leaved monkey-flower, showy monkey-flower
Origin: Native
Erythranthe dentatatooth-leaved mimulus, coastal monkey-flower
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Stream banks and other moist places.
Origin: Native
Flowers: May-September
Erythranthe floribundapurple-stem monkey-flower
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia south to California and east to Montana.
Habitat: Moist open places at moderate elevations in the mountains.
Origin: Native
Flowers: May-October
Erythranthe grandislarge monkey-flower
Origin: Native
Erythranthe guttataseep monkey-flower, yellow monkeyflower
Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Dakotas.
Habitat: Wet places, sea level to moderate elevations in the mountains.
Origin: Native
Flowers: March-September
Erythranthe inflatuladisappearing monkey-flower
Origin: Native
Erythranthe jungermannioidesliverwort monkey-flower
Distribution: Known historically from the east end of the Columbia River Gorge in Washington; Washington and Oregon, south along the Deschutes River to Maupin.
Habitat: Moss mats on cliffs.
Origin: Native
Flowers: May-June
Erythranthe lewisiigreat purple monkey-flower
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana, Wyoming and Colorado.
Habitat: Common in wet places at mid- to high elevations in the mountains
Origin: Native
Flowers: June-August
Erythranthe microphyllasmall-leaved monkey-flower
Distribution: Occurring on both sides of the Cascades in Washington; central BC to California, east to western Idaho and Nevada.
Habitat: Rocky slopes, wet meadows, streambanks, and seeps.
Origin: Native
Flowers: April-July
Erythranthe moschatamusk flower, sticky monkeyflower, musk-flower, musk-plant
Distribution: Widely distributed throughout much of Washington; British Columbia south to California, east to the Rocky Mountains; also in eastern North America.
Habitat: Streambanks, moist meadows and seeps, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Erythranthe nasutalarge-nose monkey-flower, snouted monkey-flower
Origin: Native
Erythranthe patulastalk-leaved monkey-flower
Origin: Native
Erythranthe primuloidesprimrose monkey-flower
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, Arizona and New Mexico, east to Montana and Utah.
Habitat: Wet, boggy areas at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Erythranthe ptilotasessile-leaved monkey-flower
Origin: Native
Erythranthe pulsiferaecandelabrum monkey-flower, Pulsifer's monkey-flower
Origin: Native
Erythranthe suksdorfiiminiature monkey-flower
Distribution: Occurring chiefly east of the Cascades crest in Washington; Mt Adams south to southern California, east to Colorado and Wyoming.
Habitat: Open, moist to rather dry places, from the valleys and foothills to moderate or occasionally higher elevations in the mountains.
Origin: Native
Flowers: May-July
Erythranthe washingtonensisWashington monkey-flower
Origin: Native
Erythronium grandiflorumyellow fawn-lily, glacier-lily
Distribution: Widely distributed throughout Washington; British Columbia south to Oregon, east to Colorado.
Habitat: Sagebrush slopes to near timberline in the mountains, often blooming near snow fields.
Origin: Native
Flowers: March-August
var. grandiflorum – yellow fawn lily
Erythronium idahoensepale fawn lily, yellow fawn lily
Origin: Native
Flowers: March - August
Erythronium montanumwhite avalanche lily
Distribution: Occurring chiefly west of the Cascades crest in Washington; Vancouver Island, British Columbia south to Oregon.
Habitat: Forest openings and mountain meadows, subalpine to alpine.
Origin: Native
Flowers: June-August
Erythronium oregonumgiant fawn lily, wild easter lily, deer's tongue
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Prairies, rocky balds, moist woods; at low elevations.
Origin: Native
Flowers: March-May
ssp. oregonum – giant fawn lily, wild easter lily, deer's tongue
Erythronium quinaultenseOlympic fawn lily, quinault trout lily
Distribution: Southwestern portion of Olympic peninsula, Washington.
Habitat: Openings and rocky ledges in coniferous forests.
Origin: Native
Flowers: May - June
Erythronium revolutumcoast fawn lily, mahogany fawn lily, pink fawn lily
Distribution: West of the Cascades in Washington; southern British Columbia south to northwest California.
Habitat: Along river banks and the edge of woods, in open or in moderate shade.
Origin: Native
Flowers: April-May
Eschscholzia californicaCalifornia poppy
Distribution: Occurring in locations on both sides of the Cascades crest in Washington; British Columbia south to California, east to Arizona and New Mexico.
Habitat: Open, often rocky areas, at low elevations.
Origin: Introduced
Flowers: May-September
ssp. californica – California poppy
Eucephalus engelmanniiEngelmann's aster
Distribution: Distributed on both sides of the Cascades in Washington; British Columbia south to Nevada, east to Alberta and south to Colorado.
Habitat: Open woods, foothills to high elevations in the mountains.
Origin: Native
Flowers: June-September
Eucephalus glaucescensKlickitat aster
Distribution: Occurring on both sides of the Cascades crest in Washington; endemic (only occurring in) Washington.
Habitat: Forest openings and meadows at low to moderate elevations.
Origin: Native
Flowers: July-October
Eucephalus ledophyllusCascade aster
Distribution: Cascade Mountains from northern Washington to southern Oregon.
Habitat: Meadows and open woods, mid-elevations up to timberline in the mountains.
Origin: Native
Flowers: July-September
var. ledophyllus – Cascade aster
Eucephalus paucicapitatusOlympic Mountain aster
Distribution: Olympic Mountains of Washington and Vancouver Island, British Columbia.
Habitat: Open slopes, mid- to high elevations.
Origin: Native
Flowers: July-September
Euclidium syriacumeuclidium, Syrian mustard
Distribution: In scattered locations east of the Cascades crest in Washington; Washington south to California, east to Idaho, Wyoming, Utah, and Colorado; also in Massachusetts.
Habitat: Weed of roadsides and ditch banks.
Origin: Introduced from Eurasia
Flowers: May-June
Euonymus europaeusEuropean spindle tree
Distribution: Occurring in urban areas in a few cities in Washington; widely distributed east of the Mississippi in the U.S. and in eastern Canada.
Habitat: Disturbed areas, often where moist.
Origin: Introduced
Flowers: June-July
Euonymus fortunei
Origin: Introduced
Euonymus occidentalisburning bush, western wahoo
Distribution: Uncommon, west of the Cascades in southwestern Washington; British Columbia south to California.
Habitat: Moist woods.
Origin: Native
Flowers: May-June
var. occidentalis – western wahoo
Euphorbia agrariaurban spurge
Origin: Introduced
Euphorbia amygdaloides
Origin: Introduced
Euphorbia characiasMediterranean spurge
Distribution: Known from scattered counties in lowland western Washington; not reported as occurring elsewhere in North America.
Habitat: Open slopes, rock faces, disturbed open areas.
Origin: Introduced
Flowers: June-July
Euphorbia cyparissiascypress spurge
Distribution: Scattered locations on both sides of the Cascades in Washington; introduced throughout much of North America.
Habitat: Disturbed areas, often where escaped from cultivation.
Origin: Introduced from Eurasia
Flowers: May-August
Euphorbia epithymoides
Origin: Introduced
Euphorbia glyptospermarib seed sandmat, corrugate seeded spurge, ridge seeded spurge
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to California, east to Maine and Texas.
Habitat: Dry, sandy soil, from the plains to the lower mountains.
Origin: Native
Flowers: June-September
Euphorbia helioscopiamad woman's milk, summer spurge, sun spurge, wart spurge, wartweed
Distribution: Introduced chiefly west of the Cascades in Washington; widely distributed throughout much of North America.
Habitat: Weed of cultivated areas and abondoned gardens.
Origin: Introduced from Eurasia
Flowers: April-July
Euphorbia lathyrismole plant, gopher plant, caper spurge
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California and Arizona, widely distributed in eastern North America.
Habitat: Disturbed soil and wasteland.
Origin: Introduced from Eurasia
Flowers: April-May
Euphorbia maculatasandmat, milk spurge, spotted spurge
Distribution: Occurring on both sides of the Cascades in Washington; widely distributed throughout much of North America.
Habitat: Disturbed soil and waste areas.
Origin: Introduced from eastern North America
Flowers: June-September
Euphorbia myrsinitesbroad leaved glaucous spurge, myrtle spurge
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to Colorado and New Mexico; reported from Ottawa and Minnesota.
Habitat: Disturbed areas often arid areas or dry soils.
Origin: Introduced from Mediterranean
Flowers: April-July
Euphorbia oblongatabalkan spurge, egg leaf spurge
Distribution: Occurring in a few counties in lowland western Washington; Washington to California.
Habitat: Disturbed, open areas, including roadsides and wastelots
Origin: Introduced from Europe
Flowers: May-July
Euphorbia pepluspetty spurge
Distribution: Occurring chiefly west of the Cascades in Washington; widely distributed throughout much of North America except central U.S.
Habitat: Weed of disturbed ground.
Origin: Introduced from Europe
Flowers: May-November
Euphorbia platyphyllosbroad leaved spurge
Origin: Introduced from Europe
Euphorbia segetalis
Origin: Introduced
Euphorbia serpillifoliathyme leaved spurge
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to Baja California, east to Alberta and Texas.
Habitat: Dry ground from the plains to the lower mountains.
Origin: Native
Flowers: May-September
Euphorbia serrulataupright spurge
Origin: Introduced from Europe
Euphorbia spathulatareticulate seeded spurge, spatulate leaved spurge, warty spurge
Origin: Native
Flowers: May - July
Euphorbia virgatawolf's milk, leafy spurge
Distribution: Introduced in much of the United States, except Oklahoma to Virginia and south; mostly eastern Washington, Idaho and Montana in the Pacific Northwest
Habitat: Noxious weed of disturbed soils
Origin: Introduced
Flowers: May - June
Euphrasia nemorosacommon eyebright, hairy eyebright
Distribution: Introduced chiefly west of the Cascades in Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - October
Eurybia conspicuashowy aster, western showy aster, eastern showy wood-aster
Distribution: Northeast Oregon and eastern Washington, east to Wyoming and north to Saskatchewan
Habitat: Open woods, foothills to mid-elevations in the mountains
Origin: Native
Flowers: July - September
Eurybia integrifoliathick stemmed aster
Distribution: Occurring in the northeastern and southeastern regions of Washington; Washington south to California, east to Montana, Wyoming, and Utah.
Habitat: Dry meadows, open coniferous forests, and riparian areas at mid to higher elevations.
Origin: Native
Flowers: June-September
Eurybia meritaarctic aster, Behring wood aster, Siberian aster, subalpine aster
Origin: Native
Flowers: July - August
Eurybia radulinarough leaved aster
Distribution: Chiefly on the east side of the Cascades in Washington from low to moderate elevations; south to central California.
Habitat: Open woods.
Origin: Native
Flowers: July-September
Eurybia sibiricaarctic aster, Behring wood aster, Siberian aster, Siberian wood-aster
Distribution: Circumboreal; found in northern Rocky mountains, Pacific Northwest, and northward through Alberta, British Columbia, Yukon and Northwest Territories, and Alaska.
Habitat: In Washington, this species is found in alpine and subalpine meadows.
Origin: Native
Flowers: July - August
Euthamia graminifoliafragrant goldenrod, grass leaved goldenrod
Origin: Native
Euthamia occidentaliswestern goldenrod, western goldentop
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains and Great Plains of the U.S.
Habitat: Low, ususally moist ground in the valleys and plains.
Origin: Native
Flowers: July-October
Eutrochium maculatumspotted Joe-pye weed
Distribution: Known only from Whatcom County in Washington; Southern British Columbia to Washington, east across the Rocky Mountains and Great Plains to the Atlantic Coast.
Habitat: Swamps and other moist, open places, from sea level to the high plains.
Origin: Native
Flowers: July-September
var. bruneri – joe-pye weed, joepyeweed