Includes all flowering plants, conifers, ferns and fern-allies.
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50 genera
275 species, 90 subspecies and varieties
Show only taxa with photos
Index to genera:
Eatonella,
Echinochloa,
Echinocystis,
Echinops,
Echium,
Egeria,
Eichhornia,
Elaeagnus,
Elatine,
Eleocharis,
Eleusine,
Elliottia,
Elmera,
Elodea,
Elyhordeum,
Elyleymus,
Elymus,
Empetrum,
Enemion,
Epilobium,
Epipactis,
Equisetum,
Eragrostis,
Erechtites,
Eremogone,
Eremopyrum,
Eremothera,
Eriastrum,
Ericameria,
Erigeron,
Eriogonum,
Eriophorum,
Eriophyllum,
Eritrichium,
Erodium,
Eruca,
Erucastrum,
Eryngium,
Erysimum,
Erythranthe,
Erythronium,
Eschscholzia,
Eucephalus,
Euclidium,
Euonymus,
Euphorbia,
Euphrasia,
Eurybia,
Euthamia,
Eutrochium
– white 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
– awnless barnyard grass, or jungle-rice
Origin: Introduced from the tropics
– barnyard 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
–
guleaf barnyard-grass
Origin: Introduced
– gulf barnyard grass
–
American barnyard-grass
Origin: Native?
– American barnyard grass, or watergrass
– wild 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
– tall globe thistle
Origin: Introduced
–
southern globe-thistle
Origin: Introduced
– southern globe thistle
– great globe thistle
Origin: Introduced
– common 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
– Brazilian 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
– water 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
– Russian-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
– American 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
– autumn 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
– California waterwort
Origin: Native
– Chilean waterwort
Origin: Native
– needle 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
– purple spikerush
Origin: Native
– pretty spikerush
Origin: Native
Flowers: June - September
– Bolander's spikerush
Origin: Native
– dwarf spike-rush
Origin: Native
– Engelman 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
– bald spike-rush, redfoot spike-rush
Origin: Native
– capitate spike-rush
Origin: Native
– creeping spikerush
Origin: Native
–
soft-stem spike-rush
Origin: Native
– blunt spikerush
Origin: Native
– ovoid 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
– common 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
– little-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
– few-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
– walking sedge, beaked spikerush
Origin: Native
Flowers: June - August
– Suksdorf spikerush
Origin: Native
– slender spike-rush
Origin: Native
– goosegrass
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
– copperbush
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
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
– fuzzy elmera
– common elmera
– Canadian, 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
– Nuttall'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
– Montana wild rye
Origin: Native
–
Canadian 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
– nodding wild rye
– beardless wild rye, awnless wildrye
Origin: Native
–
bottlebrush, 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
– longleaf squirreltail
– bottlebrush squirreltail, California squirreltail
– bottlebrush squirreltail
–
blue 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
– blue wildrye
– blue wildrye
– boreal wild rye
Origin: Native
Flowers: June - August
Origin: Native
– thick-spiked wheatgrass
– sand-dune wheatgrass
– stream bank wheatgrass
– big squirreltail
Origin: Native
Flowers: May - August
– false quackgrass
Origin: Native
– creeping 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
– Scribner's wild rye
Origin: Native
Flowers: June - August
– Sierra wheatgrass
Origin: Native
–
slender wheatgrass
Origin: Native
– bearded wheatgrass
– arctic wheatgrass, bearded wheatgrass
Origin: Native
– wawawai wild rye
Origin: Native
– crowberry
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
– Willamette 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
– alpine 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
– autumn 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
– smooth 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
– ciliate 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
– talus 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
– dense-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
– smooth 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
– ciliate 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
– glandular 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
– codlins-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
–
Hornemann'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
– alpine willowherb
– bronzy willow-herb
Origin: Introduced
– white-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
– slender-fruit willowherb
Origin: Native
– bog willowherb
Origin: Introduced
– yellow 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
– California 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
– Olympic Mountain willowherb
Origin: Native
– broad-leaved willow-herb
Origin: Introduced
– dwarf willow-herb
Origin: Introduced
– Oregon 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
– marsh 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
– Rocky Mountain willowherb
Origin: Native
– brook 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
– giant 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
– broad-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
– common horsetail, field horsetail
Distribution: Cosmopolitan; throughout the Pacific Northwest
Habitat: Moist to moderately dry areas
Origin: Native
– Ferriss' scouring rush
Origin: Native
– or 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
–
scouringrush horsetail , common scouring-rush
Distribution: Circumboreal; throughout the Pacific Northwest
Habitat: Moist to wet areas, lowlands to moderate elevations in the mountains
Origin: Native
– common scouring rush, Dutch rush, prairie scouring rush
– smooth scouring rush
Origin: Native
– shore horsetail
Origin: Native
– small scouring rush
Origin: Native
– Nelson's horsetail
Origin: Native
– marsh 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
– meadow horsetail
Origin: Native
– sedgelike 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
– wood 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
–
giant horsetail
Distribution: British Columbia to California, east to Idaho
Habitat: Moist areas in the lowlands
Origin: Native
– giant horsetail, great horsetail
–
variegated 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
– Alaskan scouring rush
– variegated horsetail, northern scouring rush
– stinkgrass
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
– weeping 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
– teal 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
– six-weeks love grass
Origin: Native
Flowers: July - October
–
Mexican lovegrass
Origin: Introduced
– Mexican lovegrass, orcutt's lovegrass
– little lovegrass
Origin: Introduced from Europe
–
tufted lovegrass
Origin: Native
Flowers: June - September
– purple eragrostis, tufted eragrostis
–
India lovegrass
Origin: Introduced
Flowers: October
– India lovegrass
– cut leaf burnweed, New Zealand burnweed, Australian fireweed
Origin: Introduced
–
eastern 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
– American burnweed
– Australian bornweed, toothed coast burnweed
Origin: Introduced
– needle-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
–
mountain 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
– fescue sandwort, thread-leaved sandwort
–
ballhead 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
– ballhead sandwort, sharptip sandwort
– ballhead sandwort
– ballhead sandwort
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
– Franklin's sandwort
– Thompson's sandwort
– annual 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
–
Booth's sun cup, Booth's evening primrose
Origin: Native
– Booth's sun cup, Booth's evening primrose, Booth's suncup
– small-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
– dwarf 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
– Wilcox's woolstar
Origin: Native
Flowers: May - August
– rabbitbush 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
– Greene'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
–
common 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
– little rabbitbrush
– rubber rabbitbrush
– Columbian 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
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
– bitter fleabane
– Eastwood'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
– sweet 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
– golden 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.
– basalt 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
–
scabland 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
– bloomer's daisy, scabland fleabane
– tufted 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
–
golden 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
– golden daisy, dwarf yellow fleabane, golden fleabane
– cutleaf 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
– foothill 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
– Davis's daisy, Davis's fleabane
Origin: Native
– Snake 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
–
diffuse 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
–
Eaton'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
– Eaton's shaggy daisy, Eaton's shaggy fleabane
– swamp 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
– volcanic daisy, blue dwarf fleabane
Origin: Native
– Peck'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
– Flett's fleabane, Olympic Mt. fleabane
Distribution: Olympic Mountains of Washington at high elevations.
Habitat: Cliffs and other rocky places.
Origin: Native
Flowers: July - August
–
glacier 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
– peregrine fleabane
– large-flowered fleabane
Origin: Native
– Howell'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
–
California 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
– California rayless daisy, unadorned fleabane
– Leiberg'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
– desert 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
– short 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
– northern 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
– gorge daisy, Oregon fleabane
Distribution: Columbia River Gorge, more common on the Oregon side.
Habitat: Moist shady cliffs and ledges.
Origin: Native
–
wandering 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
–
Philadelphia 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
– Philadelphia daisy, Philadelphia fleabane
– Piper'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
–
hairy-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
– Kittitas fleabane
– hairy seeded daisy, cushion fleabane
–
shaggy 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
– shaggy fleabane
– shaggy fleabane
– Salish 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
– showy 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
–
branched 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
– prairie fleabane
– branching daisy, daisy fleabane
– three-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
–
Bailey's buckwheat
Origin: Native
– Bailey's buckwheat
– nodding buckwheat
Origin: Native
– basalt 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
–
arrow-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
– northern buckwheat
– northern buckwheat
– northern buckwheat
–
Douglas'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
– Douglas' buckwheat
–
rush 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
– tall buckwheat
–
yellow 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
– Piper's buckwheat, yellow buckwheat
– bractless 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
– spotted buckwheat
Origin: Native
–
mountain 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
– marum-leaf wild buckwheat, mountain buckwheat
–
slenderbush 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
– slenderbush buckwheat
– snow 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
–
bare-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
– barestem buckwheat, naked buckwheat
–
cushion 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
– Sierra cushion buckwheat
– cushion wild buckwheat
– purple cushion wild buckwheat
– alpine 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
–
rock 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
– rock buckwheat
– rock buckwheat
– scabland wild buckwheat
–
strict 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
– Goose Lake wild buckwheat
– strict buckwheat
– strict buckwheat
– thyme 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
–
sulfur 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
– emperor's sulfur flower
– sulfur flower
– sulfur flower
– sulfur flower
– subalpine sulfur flower
– Sandberg's sulfur flower
– broom 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
–
many-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
– many-spiked cottongrass
– Chamisso'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
– slender 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
– tawny cottongrass
Origin: Introduced
– tassel cottongrass
Origin: Native
Flowers: June - July
–
common 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
– Oregon sunshine
– common eriophyllum, common wooly sunflower
– pale alpine forget-me-not
Origin: Native
Flowers: June - August
– longbeak stork's bill
Origin: Introduced
–
common 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
– greenstem 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
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
– garden rocket
– dog 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
– bee-thistle, beefthistle eryngo
Origin: Native
Flowers: July - September
– Oregon 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
– blue eryngo
Origin: Introduced
– sand-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
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
– prairie rocket, rough wallflower
– treacle 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
– Aegean 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
– prairie 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
– pale 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
– spreading 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
– chickweed 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
– Nez Perce monkeyflower
Origin: Native
– field monkey-flower
Origin: Native
– short-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
– Brewer'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
– large 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
– scarlet 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
– sharp-leaved monkey-flower, showy monkey-flower
Origin: Native
– tooth-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
– purple-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
– large monkey-flower
Origin: Native
– seep 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
– disappearing monkey-flower
Origin: Native
– liverwort 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
– great 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
– small-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
– musk 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
– large-nose monkey-flower, snouted monkey-flower
Origin: Native
– stalk-leaved monkey-flower
Origin: Native
– primrose 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
– sessile-leaved monkey-flower
Origin: Native
– candelabrum monkey-flower, Pulsifer's monkey-flower
Origin: Native
– miniature 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
– Washington monkey-flower
Origin: Native
–
yellow 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
– yellow fawn lily
– pale fawn lily, yellow fawn lily
Origin: Native
Flowers: March - August
– white 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
–
giant 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
– giant fawn lily, wild easter lily, deer's tongue
– Olympic 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
– coast 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
–
California 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
– California poppy
– Engelmann'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
– Klickitat 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
–
Cascade 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
– Cascade aster
– Olympic 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, 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
– European 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
–
burning 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
– western wahoo
– urban spurge
Origin: Introduced
– Mediterranean 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
– cypress 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
– rib 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
– mad 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
– mole 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
– sandmat, 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
– broad 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
– balkan 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
– petty 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
– broad leaved spurge
Origin: Introduced from Europe
–
thyme 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
– upright spurge
Origin: Introduced from Europe
– reticulate seeded spurge, spatulate leaved spurge, warty spurge
Origin: Native
Flowers: May - July
– wolf'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
– common eyebright, hairy eyebright
Distribution: Introduced chiefly west of the Cascades in Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - October
– showy 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
– thick 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
– arctic aster, Behring wood aster, Siberian aster, subalpine aster
Origin: Native
Flowers: July - August
– rough 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
– arctic 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
– fragrant goldenrod, grass leaved goldenrod
Origin: Native
– western 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
–
spotted 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
– joe-pye weed, joepyeweed