Vascular Plants
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446 common names
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Cabbage (Brassica oleracea)
Distribution: Known only from San Juan County in Washington; Washington and California; more commonly found in northeastern North America.
Habitat: Disturbed areas including fields, roadsides, and wastelots, where escaped from cultivation.
Origin: Introduced from Europe
Deer cabbage (Fauria crista-galli)
Origin: Native
Skunk cabbage (Lysichiton americanus)
Distribution: Both sides of the Cascades in Washington; Alaska south to California.
Habitat: Swampy areas from sea level to mid-elevations in the mountains.
Origin: Native
Wild cabbage (Brassica oleracea)
Distribution: Known only from San Juan County in Washington; Washington and California; more commonly found in northeastern North America.
Habitat: Disturbed areas including fields, roadsides, and wastelots, where escaped from cultivation.
Origin: Introduced from Europe
Yellow skunk cabbage (Lysichiton americanus)
Distribution: Both sides of the Cascades in Washington; Alaska south to California.
Habitat: Swampy areas from sea level to mid-elevations in the mountains.
Origin: Native
Snowball cactus (Pediocactus nigrispinus)
Distribution: Endemic to central Washington, Chelan to Yakima Counties.
Habitat: Often with sagebrush, desert valleys to low mountains.
Origin: Native
Cascade calico-flower (Downingia yina)
Distribution: Both sides of the Cascades in Washington; Washington south to California.
Habitat: Marshes, wet meadows and edges of ponds.
Origin: Native
California (Rubus ursinus)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Open to fairly dense woodlands, sea level to mid-elevations in the mountains; common in logged areas.
Origin: Native
California-tea (Rupertia physodes)
Distribution: West of the Cascades in Washington; Washington south to California.
Habitat: Prairie and forest edges at low elevations.
Origin: Native
Calliopsis (Coreopsis tinctoria)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout North America except at northernmost latitudes.
Habitat: Open and disturbed areas at low to mid elevations where seasonally moist.
Origin: Native
Calliopsis (Coreopsis tinctoria)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout North America except at northernmost latitudes.
Habitat: Open and disturbed areas at low to mid elevations where seasonally moist.
Origin: Native
Cusick's camas (Camassia cusickii)
Distribution: Washington Oregon, east to west-central Idaho.
Habitat: Open hillsides at low to moderate elevations.
Origin: Native
Glaucous death camas (Anticlea elegans)
Distribution: In the Olympic Mountains of Washington and across the northern border east of the Cascacdes crest; Alaska to Oregon, south in the Rockies to New Mexico, east across Canada and the northern United States to Virginia.
Habitat: Meadow, open forests and rocky slopes, mid- to high elevations in the mountains.
Origin: Native
Panicled death camas (Toxicoscordion paniculatum)
Distribution: East of the Cascades crest in Washington; Washington south to California, east to Montana and Arizona.
Habitat: Common in sagebrush desert to ponderosa or lodgepole pine forests.
Origin: Native
Panicled death camas (Toxicoscordion paniculatum)
Distribution: East of the Cascades crest in Washington; Washington south to California, east to Montana and Arizona.
Habitat: Common in sagebrush desert to ponderosa or lodgepole pine forests.
Origin: Native
Camelthorn (Alhagi maurorum)
Distribution: East of the Cascades in Washington; south to California, east to Idaho and Texas.
Habitat: Disturbed areas in arid lands.
Origin: Introduced
Camelthorn (Alhagi maurorum)
Distribution: East of the Cascades in Washington; south to California, east to Idaho and Texas.
Habitat: Disturbed areas in arid lands.
Origin: Introduced
Biennial campion (Silene csereii)
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to Washington, east across the central and northern U.S. and Canada to the Atlantic Coast.
Habitat: Disturbed areas including fields, roadsides, and wastelots.
Origin: Introduced
Bladder campion (Silene vulgaris)
Distribution: Occurring in many areas throughout Washington; widely distributed throughout North America except along the southern areas of the U.S.
Habitat: Weed of waste ground, usually at lower elevations.
Origin: Introduced from Europe
Campion (Silene repens)
Origin: Native
Moss campion (Silene acaulis)
Distribution: Alaska to Oregon, and south in the Rocky Mountains to Arizona
Habitat: Rock crevices and talus slopes at high elevations in the mountains
Origin: Native
Pink catchfly campion (Silene repens)
Origin: Native
Rose campion (Silene coronaria)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Utah; eastern North America.
Habitat: Along roadways, railways and waste land.
Origin: Introduced from Europe
Rose campion (Silene coronaria)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California, east to Idaho and Utah; eastern North America.
Habitat: Along roadways, railways and waste land.
Origin: Introduced from Europe
White campion (Silene latifolia)
Distribution: Widely distributed throughout Washington; introduced in much of North America.
Habitat: Well established in undisturbed areas.
Origin: Introduced from Europe
Canadian (Elodea canadensis)
Distribution: Throughout most of the United States
Habitat: Common in slow-moving, often alkaline water, in the Pacific Northwest
Origin: Native
Canary-broom (Genista canariensis)
Distribution: Occurring in a few scattered locations east of the Cascades crest in Washington; Washington and California.
Habitat: Disturbed areas including wastelots and roadsides
Origin: Introduced
Sharpleaf cancerwort (Kickxia elatine)
Origin: Introduced
Spreading candyflower (Montia diffusa)
Distribution: West side of the Cascades, southern British Columbia to Marin County, California.
Habitat: Moist woods at low elevation.
Origin: Native
Candystick (Allotropa virgata)
Distribution: Both sides of the Cascades in Washington; British Columbia south to California.
Habitat: Deep humus of coniferous forests at low to moderate elevations.
Origin: Native
Coastal bishop's cap (Pectiantia ovalis)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Deep, moist woods, creek bottoms and wet banks.
Origin: Native
Coastal bishop's cap (Pectiantia ovalis)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California.
Habitat: Deep, moist woods, creek bottoms and wet banks.
Origin: Native
Caraway (Carum carvi)
Origin: Introduced. Native to Europe.
Carelessweed (Cyclachaena xanthiifolia)
Distribution: Eastern Washington south to New Mexico, east to Alberta and Texas.
Habitat: Bottom land and moist waste places.
Origin: Introduced?
Carelessweed (Cyclachaena xanthiifolia)
Distribution: Eastern Washington south to New Mexico, east to Alberta and Texas.
Habitat: Bottom land and moist waste places.
Origin: Introduced?
Carpetweed (Mollugo verticillata)
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to Baja California, east over nearly all of temperate North America.
Habitat: Moist, often waste ground, especially along river banks.
Origin: Native
Green carpetweed (Mollugo verticillata)
Distribution: Chiefly east of the Cascades in Washington; British Columbia south to Baja California, east over nearly all of temperate North America.
Habitat: Moist, often waste ground, especially along river banks.
Origin: Native
American wild carrot (Daucus pusillus)
Distribution: Pacific Northwest to California, and throughout the Southern States; chiefly west of the Cascades in Washington
Habitat: Dry, open areas at low elevations
Origin: Native
Wild carrot (Daucus carota)
Distribution: Widely distributed throughout Washington; Widely distributed throughout North America.
Habitat: Roadsides, ditchbanks, somewhat moist waste land.
Origin: Introduced. Native to Europe.
Cascara (Frangula purshiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Montana and Idaho.
Habitat: Forest understory and margins from low to moderate elevations in the mountains.
Origin: Native
Cascara (Frangula purshiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to Montana and Idaho.
Habitat: Forest understory and margins from low to moderate elevations in the mountains.
Origin: Native
Broad-leaf cat-tail (Typha latifolia)
Distribution: Distributed widely throughout Washington; widely distributed throughout North America.
Habitat: Marshes, ponds and shallow slow-flowing water, sea level to mid-elevations in the mountains.
Origin: Native
Narrow-leaf cat-tail (Typha angustifolia)
Distribution: Chiefly along the Atlantic Coast of the United States, west to Missouri; occasional in Washington on both sides of the Cascades.
Habitat: Shallow, quiet to slow-moving water.
Origin: Introduced from Europe and/or E.NA
Southern cat-tail (Typha domingensis)
Origin: Unknown
Cascade catchfly (Silene suksdorfii)
Distribution: Occurring in the Cascades Mountains in Washington; from Mt. Baker, Washington area south to northern California.
Habitat: Alpine and subalpine slopes, often on talus.
Origin: Native
Conoid catchfly (Silene conoidea)
Origin: Introduced from Europe
Forked catchfly (Silene dichotoma)
Origin: Introduced from Europe
Menzies' catchfly (Silene menziesii)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and New Mexico.
Habitat: Common in open woods from the lowlands to moderate elevations in the mountains.
Origin: Native
Night-flowering catchfly (Silene noctiflora)
Distribution: Introduced in much of the United States; more common east of the Cascades in Washington.
Habitat: Grain fields and waste areas.
Origin: Introduced from Europe
Oregon catchfly (Silene oregana)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains of Montana, Wyoming, and Utah.
Habitat: Forest openings and meadows from middle elevation to subalpine.
Origin: Native
Palmer's catchfly (Silene bernardina)
Origin: Native
Red catchfly (Silene dioica)
Distribution: Occurring in scattered locations in lowland western Washington; British Columbia south to Oregon, east to eastern North America.
Habitat: Disturbed areas, roadsides, and wastelots where escaped from cultivation.
Origin: Introduced from Europe
Sand catchfly (Silene conica)
Origin: Introduced from Eurasia
Sleepy catchfly (Silene antirrhina)
Distribution: Distributed widely throughout Washington; occurring across North America from low elevations to 10,000 feet.
Habitat: Open areas, often where disturbed.
Origin: Native
Sweet William catchfly (Silene armeria)
Distribution: Introduced as an ornmental and occasionally escaping throughout North America.
Habitat: Disturbed soil and wasteland.
Origin: Introduced from Europe
Catchweed (Asperugo procumbens)
Distribution: Introduced in much of the northern part of the United States; common east of the Cascades in Washington and Oregon
Habitat: A weed of moist soil in fields, roadsides and other disturbed areas, mostly east of the Cascades.
Origin: Introduced from Europe
Catnip (Nepeta cataria)
Distribution: Chiefly east of the Cascades in Washington, but in scattered locations on the west side; widely established throughout North America.
Habitat: Roadsides, streambanks, waste places, sometimes in relatively undisturbed areas.
Origin: Introduced from Eurasia
Common cattail (Typha latifolia)
Distribution: Distributed widely throughout Washington; widely distributed throughout North America.
Habitat: Marshes, ponds and shallow slow-flowing water, sea level to mid-elevations in the mountains.
Origin: Native
Redstem ceanothus (Ceanothus sanguineus)
Distribution: Widely distributed on both sides of the Cascades in Washington; British Columbia to California, east to Idaho.
Habitat: Moist to dry open woods, low to moderate elevations.
Origin: Native
Alaskan yellow cedar (Callitropsis nootkatensis)
Distribution: In the Cascades and Olympic Mountains of Washington; Alaska south at increasing altitudes to northern California.
Habitat: Moist areas, mid- to high elevations in the mountains.
Origin: Native
Canoe cedar (Thuja plicata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to northern California, east to Alberta, Idaho, and Montana.
Habitat: Moist or swampy areas from sea level to mid-elevations in the mountains.
Origin: Native
Ground cedar (Lycopodium complanatum)
Distribution: Occurring on both sides of the Cascades crest in Washington, primarily in the northern half of the state; Alaska south to Washington, Idaho and Montana, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Moist to dry, usually coniferous forests, rocky slopes and sandy openings, low to mid-elevations.
Origin: Native
Western red cedar (Thuja plicata)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to northern California, east to Alberta, Idaho, and Montana.
Habitat: Moist or swampy areas from sea level to mid-elevations in the mountains.
Origin: Native
Lesser celandine (Ficaria verna)
Distribution: In scattered locations in western Washington but likely more widespread; British Columbia south to Oregon; eastern North America.
Habitat: Disturbed areas often where shaded and moist.
Origin: Introduced from Europe
Lesser celandine (Ficaria verna)
Distribution: In scattered locations in western Washington but likely more widespread; British Columbia south to Oregon; eastern North America.
Habitat: Disturbed areas often where shaded and moist.
Origin: Introduced from Europe
Wild celery (Vallisneria americana)
Distribution: Native from Quebec to Texas and Florida; introduced in Dry Falls Coulee, Grant County, and several lakes west of the Cascades in Washington; also in Oregon and Idaho
Habitat: Ponds, lakes and quiet streams
Origin: Introduced from eastern North America
Branching centaury (Centaurium pulchellum)
Origin: Introduced
Desert centaury (Zeltnera exaltata)
Distribution: East of the Cascades in Washington; east to Nebraska and Colorado, south to eastern California.
Habitat: Moist places, especially around alkaline lakes and hot springs.
Origin: Native
European centaury (Centaurium erythraea)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California east to Idaho; eastern North America.
Habitat: Escaped to meadows, prairies and wasteland.
Origin: Introduced
Lesser centaury (Centaurium pulchellum)
Origin: Introduced
Muhlenberg's centaury (Zeltnera muehlenbergii)
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings, wet areas at low to moderate elevations.
Origin: Native
Muhlenberg`s centaury (Zeltnera muehlenbergii)
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; British Columbia south to California, east to Idaho.
Habitat: Forest openings, wet areas at low to moderate elevations.
Origin: Native
Tall centaury (Zeltnera exaltata)
Distribution: East of the Cascades in Washington; east to Nebraska and Colorado, south to eastern California.
Habitat: Moist places, especially around alkaline lakes and hot springs.
Origin: Native
Chaffweed (Lysimachia minima)
Distribution: throughout much of North America.
Habitat: Moist ground and vernal pools at low elevations.
Origin: Native
Chaffweed (Lysimachia minima)
Distribution: throughout much of North America.
Habitat: Moist ground and vernal pools at low elevations.
Origin: Native
Golden chain-tree (Laburnum anagyroides)
Distribution: Occurring chiefly west of the Cascades crest at low elevations in Washington; British Columbia south to California, Utah.
Habitat: Disturbed sites often in proximity to residential development where escaped from cultivation.
Origin: Introduced
Austrian chamomile (Cota austriaca)
Distribution: Known only from near Pullman in Whitman County.
Habitat: Disturbed areas, fields, roadsides.
Origin: Introduced
Corn chamomile (Anthemis arvensis)
Distribution: Introduced in much of the United States; more common west of the Cascades in Washington
Habitat: Roadsides, disturbed areas
Origin: Introduced
False chamomile (Tripleurospermum inodorum)
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout northern 2/3 of North America.
Habitat: Noxious weed in fields and waste ground in eastern Washington
Origin: Introduced from Europe
Field chamomile (Anthemis arvensis)
Distribution: Introduced in much of the United States; more common west of the Cascades in Washington
Habitat: Roadsides, disturbed areas
Origin: Introduced
Golden chamomile (Cota tinctoria)
Distribution: In scattered locations in Washington; widely distributed across northern half of North America.
Habitat: Disturbed areas, often where dry.
Origin: Introduced
Mayweed chamomile (Anthemis cotula)
Distribution: Introduced throughout the United States
Habitat: Weed of roadsides and disturbed area
Origin: Introduced
Stinking chamomile (Anthemis cotula)
Distribution: Introduced throughout the United States
Habitat: Weed of roadsides and disturbed area
Origin: Introduced
Wild chamomile (Matricaria chamomilla)
Distribution: Widespread across the United States and southern Canada.
Habitat: Roadsides, dry waste sites.
Origin: Introduced
Wild chamomile (Matricaria chamomilla)
Distribution: Widespread across the United States and southern Canada.
Habitat: Roadsides, dry waste sites.
Origin: Introduced
Yellow chamomile (Cota tinctoria)
Distribution: In scattered locations in Washington; widely distributed across northern half of North America.
Habitat: Disturbed areas, often where dry.
Origin: Introduced
Yellow chamomile (Cota tinctoria)
Distribution: In scattered locations in Washington; widely distributed across northern half of North America.
Habitat: Disturbed areas, often where dry.
Origin: Introduced
Creeping Charlie (Glechoma hederacea)
Distribution: Occurring in locations throughout Washington; introduced thoughout nearly all of North America.
Habitat: Moist woods and thickets, disturbed areas.
Origin: Introduced from Eurasia
Charlock (Sinapis arvensis)
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout North America.
Habitat: Waste places and other disturbed areas.
Origin: Introduced from the Mediterranean region, reaching North America perhaps as early as 8000 years bp (Jacobson et al. 1988)
Jointed charlock (Raphanus raphanistrum)
Distribution: Occurring in scattered locations chiefly west of the Cascades; widely distributed throughout North America.
Habitat: Weed of waste ground.
Origin: Introduced, probably from the Mediterranean region
Bristly-stem checker-mallow (Sidalcea hirtipes)
Distribution: Clark and Lewis counties in Washington; south to Lincoln, Tillamook and Clatsop Counties, Oregon.
Habitat: Coastal mountains to bluffs along the ocean, but not on tideflats.
Origin: Native
Henderson's checker-mallow (Sidalcea hendersonii)
Distribution: Along the coast in Washington; Vancouver Island south to the mouth of the Umquah River in Oregon.
Habitat: On or adjacent to tidelands, coastal marshes.
Origin: Native
Meadow checker-mallow (Sidalcea campestris)
Distribution: Native only to the Willamette Valley area (Multnomah and Washington to Benton and Linn counties). Introduced as a garden plant in western Washington, but rarely persisting.
Habitat: Dry fields and roadsides.
Origin: Introduced
Nelson's checker-mallow (Sidalcea nelsoniana)
Distribution: Occurring in southwest Washington; south in Willamette Valley of Oregon from Portland to Salem, west to Tillamook County.
Habitat: Gravelly, well-drained soil at low elevations.
Origin: Native
Virgate checkerbloom (Sidalcea virgata)
Distribution: Known only from Thurston County in Washington; Thurston County, WA and then Yamhill County, Oregon south along West Cascades to California.
Habitat: Moist prairies and meadows at low elevations.
Origin: Native
Virgate checkerbloom (Sidalcea virgata)
Distribution: Known only from Thurston County in Washington; Thurston County, WA and then Yamhill County, Oregon south along West Cascades to California.
Habitat: Moist prairies and meadows at low elevations.
Origin: Native
Cheeseweed (Malva parviflora)
Distribution: Scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Waste places, disturbed areas.
Origin: Introduced from Eurpoe
Bitter cherry (Prunus emarginata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist woods or somewhat moist places in shrub-steppe, sea level to mid-elevations in the mountains.
Origin: Native
Bitter cherry (Prunus emarginata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist woods or somewhat moist places in shrub-steppe, sea level to mid-elevations in the mountains.
Origin: Native
Bitter cherry (Prunus emarginata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Moist woods or somewhat moist places in shrub-steppe, sea level to mid-elevations in the mountains.
Origin: Native
European bird cherry (Prunus padus)
Distribution: Introduced in Alaska and in Pennsylvania and a few neighboring states in eastern United States
Habitat: Ornamental, occasionally escapes
Origin: Introduced
Laurel cherry (Prunus laurocerasus)
Distribution: Introduced ornamental, occasionally escaping west of the Cascades in Washington.
Habitat: Waste areas.
Origin: Introduced
Low hairy ground cherry (Physalis grisea)
Origin: Introduced from E. NA
Mahaleb cherry (Prunus mahaleb)
Distribution: Introduced species used as budding stock for cherries, sometimes escaping.
Habitat: Disturbed soil.
Origin: Introduced
Perfumed cherry (Prunus mahaleb)
Distribution: Introduced species used as budding stock for cherries, sometimes escaping.
Habitat: Disturbed soil.
Origin: Introduced
Puget Sound cherry (Prunus ×pugetensis)
Distribution: Southwestern B.C through Puget Trough of Washington.
Habitat: Low elevations in forests or forest edges, or disturbed areas, typically where both parent species are present.
Origin: Native
Sour cherry (Prunus cerasus)
Origin: Introduced
Sweet cherry (Prunus avium)
Distribution: Distributed widely throughout Washington; widely distributed throughout much of North America.
Habitat: Forest edges, fields, wastelots, and other disturbed areas.
Origin: Introduced
Cherry-laurel (Prunus laurocerasus)
Distribution: Introduced ornamental, occasionally escaping west of the Cascades in Washington.
Habitat: Waste areas.
Origin: Introduced
Burr chervil (Anthriscus caucalis)
Distribution: Introduced occasionally in eastern United States, and from Washington to California.
Habitat: Moist, open places, usually in disturbed soil.
Origin: Introduced. Native to Eurasia.
Rough chervil (Chaerophyllum temulum)
Distribution: Currently known in Washington from King County area; distributed in scattered localities in northeastern North America.
Habitat: Forest edge and understory
Origin: Introduced
Wild chervil (Anthriscus sylvestris)
Distribution: Escaped on both sides of the Cascades in Washington; British Columbia south to Oregon and Idaho; eastern North America and Greenland.
Habitat: Moist areas, usually on disturbed soil.
Origin: Introduced. Native to Eurasia.
Chick-pea (Cicer arietinum)
Distribution: Sparingly introduced in eastern Washington; scattered localities in other parts of western North America.
Habitat: Disturbed areas on the edge of or near agricultural fields.
Origin: Introduced
Chickenclaws (Sarcocornia perennis)
Distribution: Along the coast in Washington; Alaska south to Baja California, also on Atlantic coast, Europe, and Mediterranean region.
Habitat: Salt marshes and beaches along coast.
Origin: Native
Alpine chickweed (Cerastium beeringianum)
Distribution: Occurring in the Cascade Mountains in Washington; Alaska south to California, east to the Rocky Mountains in the U.S.; east across Canada to the Atlantic coast.
Habitat: Alpine zone, mostly in cirques or on talus.
Origin: Native
Common chickweed (Stellaria media)
Distribution: Widely distributed throughout most of Washington; widely distributed throughout North America.
Habitat: Disturbed areas, often where moist in spring; very common.
Origin: Introduced from Eurasia
Doubtful mouse-ear chickweed (Cerastium dubium)
Origin: Introduced from Europe
Dry chickweed (Cerastium dichotomum)
Distribution: Washington to California.
Habitat: Disturbed areas, especially along roadsides.
Origin: Introduced from southern Europe
Dwarf chickweed (Cerastium pumilum)
Distribution: Introduced at scattered locations in Washngton.
Habitat: Dry, sandy or gravelly places, roadsides.
Origin: Introduced from Europe
Giant chickweed (Myosoton aquaticum)
Distribution: Introduced in much of eastern United States; occasional in the Pacific Coast states and British Columbia.
Habitat: Stream banks, woods, marshes and wet meadows.
Origin: Introduced from Europe
Greater chickweed (Stellaria neglecta)
Origin: Introduced
Lesser chickweed (Stellaria pallida)
Origin: Introduced
Little chickweed (Cerastium semidecandrum)
Origin: Introduced from Europe
Short-stalk mouse-ear chickweed (Cerastium brachypodum)
Origin: Native
Sticky mouse-ear chickweed (Cerastium glomeratum)
Distribution: Widely distributed throughout Washington, but more common west of the Cascades crest; occurring throughout western and eastern North America.
Habitat: Low elevations in disturbed ground.
Origin: Introduced from Europe
Upright chickweed (Moenchia erecta)
Distribution: Occurring west of the Cascades in Washington; British Columbia south to California; in scattered locations in other parts of the central and southern U.S.
Habitat: Open, disturbed areas at low elevations.
Origin: Introduced
Water chickweed (Montia fontana)
Distribution: Alaska to California, east to Greenland and Maine
Habitat: Wet places, sometimes aquatic and floating, low to moderate elevations
Origin: Native
Water chickweed (Myosoton aquaticum)
Distribution: Introduced in much of eastern United States; occasional in the Pacific Coast states and British Columbia.
Habitat: Stream banks, woods, marshes and wet meadows.
Origin: Introduced from Europe
Chicory (Cichorium intybus)
Distribution: Widely distributed throughout most of Washington; widely distributed throughout most of North America.
Habitat: Dry to moist soil, pastures, roadsides, and other disturbed areas.
Origin: Introduced from Europe
Chinese (Brassica juncea)
Distribution: Occurring in scattered locations throughout Washington; widely distributed throughout North America.
Habitat: Disturbed areas including fields, roadsides and wastelots.
Origin: Introduced from Eurasia
Chives (Allium schoenoprasum)
Distribution: Across southern Canada and northern United States; in Washington, along the Wenatchee and Columbia Rivers
Habitat: Wet meadows, rocky or gravelly streambanks and lake shores
Origin: Native and Introduced
Wild chives (Allium vineale)
Distribution: Scattered localities throughout Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Black chokeberry (Aronia melanocarpa)
Origin: Introduced
Chucklusa (Lomatium canbyi)
Distribution: Along Columbia River in NE Washington, common from Kittitas County south into Oregon
Habitat: Scablands and sagebrush steppe in rather deep soil
Origin: Native
Biennial cinquefoil (Potentilla biennis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Yukon Territories south to California, east to the Rocky Mountains; also in South Dakota.
Habitat: Disturbed areas, typically where moist to wet.
Origin: Native
Brewer's cinquefoil (Potentilla breweri)
Distribution: Mountains of central and southeast Oregon and northern California; occasional in the Wenatchee Mountains of Washington.
Habitat: Moist meadows and stream banks to open slopes, mid- to high elevations.
Origin: Native
Brewer's cinquefoil (Potentilla breweri)
Distribution: Mountains of central and southeast Oregon and northern California; occasional in the Wenatchee Mountains of Washington.
Habitat: Moist meadows and stream banks to open slopes, mid- to high elevations.
Origin: Native
Brook cinquefoil (Potentilla rivalis)
Distribution: British Columbia south, east of the Cascades in Washington, down the Columbia River Gorge and the Willamette Valley to southwest Oregon and coastal California, east to Minnesota and New Mexico.
Habitat: Damp soil, especially along rivers and around lakes, ponds, and swamps.
Origin: Native
Drummond's cinquefoil (Potentilla drummondii)
Distribution: Alaska to California, east to Alberta, Montana and Utah; in the Olympic and Cascade Mountains of Washington
Habitat: Forest openings, meadows and high ridges, mid- to high elevations in the mountains
Origin: Native
Fan-leaf cinquefoil (Potentilla flabellifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Montana and Wyoming.
Habitat: Common in moist meadows, mid- to high elevations in the mountains.
Origin: Native
Fringe-leaf cinquefoil (Potentilla flabellifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Montana and Wyoming.
Habitat: Common in moist meadows, mid- to high elevations in the mountains.
Origin: Native
Grey cinquefoil (Potentilla inclinata)
Origin: Introduced from central and southern Europe
Hoary cinquefoil (Potentilla argentea)
Distribution: Introduced and established in eastern United states and southern Canada; northeast Washington and a few places in Idaho.
Habitat: Sandy or gravely soil.
Origin: Introduced
Jepson's cinquefoil (Potentilla jepsonii)
Origin: Native
Marsh cinquefoil (Comarum palustre)
Distribution: Widely distributed throughout much of Washington; Alaska east across Canada to the Atlantic Coast, south to California and east across the northern half of the U.S.
Habitat: Bogs, wet meadows and lake margins, sea level to subalpine.
Origin: Native
Newberry's cinquefoil (Potentilla newberryi)
Origin: Native
Northern cinquefoil (Potentilla villosa)
Distribution: Occurring in the North Cascades, Olympic Mountains, and at Mt. Rainier in Washington; Alaska to Oregon.
Habitat: Arctic tundra to alpine ridges, talus slopes and rock crevices.
Origin: Native
Norwegian cinquefoil (Potentilla norvegica)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Usually in moist soil, often along irrigation ditches or in waste places.
Origin: Native
Norwegian cinquefoil (Potentilla norvegica)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Usually in moist soil, often along irrigation ditches or in waste places.
Origin: Native
Rough cinquefoil (Potentilla norvegica)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Usually in moist soil, often along irrigation ditches or in waste places.
Origin: Native
Shrubby cinquefoil (Dasiphora fruticosa)
Distribution: Both sides of the Cascades in Washington; Alaska south to California, east to New Jersey.
Habitat: Lower foothills to subalpine slopes.
Origin: Native
Shrubby cinquefoil (Dasiphora fruticosa)
Distribution: Both sides of the Cascades in Washington; Alaska south to California, east to New Jersey.
Habitat: Lower foothills to subalpine slopes.
Origin: Native
Silver cinquefoil (Potentilla argentea)
Distribution: Introduced and established in eastern United states and southern Canada; northeast Washington and a few places in Idaho.
Habitat: Sandy or gravely soil.
Origin: Introduced
Snow cinquefoil (Potentilla nivea)
Distribution: Alaska to British Columbia, east to Quebec, south in the Rocky Mountains to Colorado.
Habitat: Arctic tundra and gravel bars to alpine slopes and meadows.
Origin: Native
Sulphur cinquefoil (Potentilla recta)
Distribution: Widely distributed throughout Washington; widely distributed throughout most of North America.
Habitat: Roadsides, trails, disturbed ground.
Origin: Introduced
Villous cinquefoil (Potentilla villosa)
Distribution: Occurring in the North Cascades, Olympic Mountains, and at Mt. Rainier in Washington; Alaska to Oregon.
Habitat: Arctic tundra to alpine ridges, talus slopes and rock crevices.
Origin: Native
Common clarkia (Clarkia rhomboidea)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California and Arizona, east to Idaho, Montana, Utah, and Nevada.
Habitat: Dry, often sandy soil in forest openings at low to moderate elevtions.
Origin: Native
Balkan clary (Salvia nemorosa)
Origin: Introduced from Eurasia
Meadow clary (Salvia pratensis)
Distribution: Scattered locations on both sides of the Cascades in Washington; escaping in parts of western, central, and eastern North America.
Habitat: Roadsides and other disturbed habitats.
Origin: Introduced
Fell-fields Claytonia (Claytonia megarhiza)
Distribution: Occurring in the Wenatchee Mountains of Washington; in scattered locations from Northwest Territories south to California, east to the Rocky Mountains.
Habitat: Gravelly soil and talus slopes, mid- to high elevations in the mountains.
Origin: Native
Lake Washington Claytonia (Claytonia washingtoniana)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to Oregon.
Habitat: Coastal bluffs and coniferous forests at low elevations, typically where moist.
Origin: Native
Cleareye (Salvia sclarea)
Distribution: Scattered locations on both sides of the Cascades in Washington; occasionally escaping in parts of western, central, and eastern North America.
Habitat: Roadsides and other disturbed areas.
Origin: Introduced
Common cleavers (Galium aparine)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Variety of habitats, sea level to mid-elevations in the mountains.
Origin: Native
Western clematis (Clematis ligusticifolia)
Distribution: Chiefly east of the Cascades crest in Washington; British Columbia south to California, east to Oklahoma and the Dakotas.
Habitat: River valleys and sagebrush desert to ponderosa pine forests.
Origin: Native
Brewer's cliffbrake (Pellaea breweri)
Distribution: East slope of the Cascades, Washington to California, east to Montana and Utah
Habitat: Talus slopes, cliff crevices and other rocky places, foothills to timberline
Origin: Native
Sierran cliffbrake (Pellaea brachyptera)
Origin: Native
Spiny clotbur (Xanthium spinosum)
Origin: Introduced from South America (although treated as native in CA by Jeps. Man.)
Cloudberry (Rubus chamaemorus)
Origin: Native
Alsike clover (Trifolium hybridum)
Distribution: Introduced in Western United States
Habitat: Near cultivated fields and roadsides
Origin: Introduced
Arrow-leaf clover (Trifolium vesiculosum)
Distribution: Occurring in a few locations in lowland western Washington; Washington south to California; also in the south-central and southeastern U.S.
Habitat: Disturbed areas in including wastelots, roadsides, and fields.
Origin: Introduced
Big-head clover (Trifolium macrocephalum)
Distribution: Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
Habitat: Shrub-steppe, sagebrush desert and ponderosa pine woodlands.
Origin: Native
Bowl clover (Trifolium cyathiferum)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia south to California.
Habitat: Uncommon in wet meadows to fairly dry, sandy soil, at moderate elevations.
Origin: Native
Branched Indian clover (Trifolium dichotomum)
Distribution: Occurring in the San Juan Islands in Washington; Willamette Valley, OR south to California.
Habitat: Open forest, sandy embankments, and grassy balds on islands.
Origin: Native
Branched Indian clover (Trifolium dichotomum)
Distribution: Occurring in the San Juan Islands in Washington; Willamette Valley, OR south to California.
Habitat: Open forest, sandy embankments, and grassy balds on islands.
Origin: Native
Burrowing clover (Trifolium subterraneum)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California; southeastern U.S.
Habitat: Pastures, prairies, roadsides and other open, disturbed areas at low elevations.
Origin: Introduced
Clustered clover (Trifolium glomeratum)
Origin: Introduced
Cow clover (Trifolium wormskioldii)
Distribution: Alaska to California, east to Montana and New Mexico; more common west of the Cascades in Washington
Habitat: Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains
Origin: Native
Crimson clover (Trifolium incarnatum)
Distribution: Introduced, occasionally established in western Washington and Oregon.
Habitat: Wasteland, pastures, disturbed soil.
Origin: Introduced
Cup clover (Trifolium cyathiferum)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia south to California.
Habitat: Uncommon in wet meadows to fairly dry, sandy soil, at moderate elevations.
Origin: Native
Douglas' clover (Trifolium douglasii)
Distribution: Known from Garfield, Spokane, and Whitman counties in Washington; eastern Washington south to east-central Oregon, east to eastern Idaho; disjunct in sw Oregon.
Habitat: Moist to wet areas in including open meadows, forested wetlands, and streambanks.
Origin: Native
Dutch clover (Trifolium repens)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Established in a variety of native habitats, such as mountain meadows
Origin: Introduced
Few-flowerered clover (Trifolium oliganthum)
Distribution: West of the Cascades, from southwest British Columbia to California.
Habitat: Meadowland to dry, rocky soil at low elevations.
Origin: Native
Foothill clover (Trifolium ciliolatum)
Distribution: Southern Washington south to Baja California west of the Cascades and Sierra Nevada, at elevations of up to several thousand feet in the south.
Habitat: Wet meadows to rather dry, sandy soil.
Origin: Native
Golden clover (Trifolium aureum)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, railways and waste places.
Origin: Introduced
Greater hop clover (Trifolium aureum)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, railways and waste places.
Origin: Introduced
Hop clover (Medicago lupulina)
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Waste places and sandy or gravelly soil.
Origin: Introduced
Hop clover (Trifolium campestre)
Distribution: Distributed chiefly west of the Cascades in Washington; distributed widely throughout North America.
Habitat: Wastelands, roadsides, meadows, and other disturbed areas.
Origin: Introduced
Knotted clover (Trifolium striatum)
Large-head clover (Trifolium macrocephalum)
Distribution: Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
Habitat: Shrub-steppe, sagebrush desert and ponderosa pine woodlands.
Origin: Native
Least hop clover (Trifolium dubium)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including forest openings, meadows, wastelots, roadsides, and lawns.
Origin: Introduced
Nodding clover (Trifolium cernuum)
Notch-leaf clover (Trifolium bifidum)
Origin: Native
Pinole clover (Trifolium bifidum)
Origin: Native
Rabbit-foot clover (Trifolium arvense)
Distribution: Introduced chiefly west of the Cascades in Washington; British Columbia south to Oregon.
Habitat: Uncommon in waste places and roadsides.
Origin: Introduced
Rancheria clover (Trifolium albopurpureum)
Distribution: Known from only a few scattered locations in Washington; Washington south to California, east to Arizona.
Habitat: Coastal bluffs to forest openings at middle elevations.
Origin: Native
Rancheria clover (Trifolium albopurpureum)
Distribution: Known from only a few scattered locations in Washington; Washington south to California, east to Arizona.
Habitat: Coastal bluffs to forest openings at middle elevations.
Origin: Native
Red clover (Trifolium pratense)
Distribution: Introduced throughout the United States; common forage crop in the Pacific Northwest
Habitat: Escaped from cultivation; found along mountain trails where horses have been used
Origin: Introduced
Reversed clover (Trifolium resupinatum)
Origin: Native
Rose clover (Trifolium hirtum)
Origin: Introduced
Salt marsh clover (Trifolium wormskioldii)
Distribution: Alaska to California, east to Montana and New Mexico; more common west of the Cascades in Washington
Habitat: Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains
Origin: Native
Sand clover; tomcat clover (Trifolium willdenovii)
Distribution: West side of the Cascades and east along the Columbia River in Washington; British Columbia south to California.
Habitat: Grassy hillsides, balds, prairies and meadows at low to moderate elevations.
Origin: Native
Small flowered yellow sweet clover (Melilotus indicus)
Distribution: Sparingly introduced in western Washington and Oregon, more common in California.
Habitat: Waste ground, disturbed soil.
Origin: Introduced
Small-head clover (Trifolium microcephalum)
Distribution: Distributed widely throughout Washington; British Columbia to Baja California, east to Montana and Arizona.
Habitat: Moist meadows, sandy riverbanks and drier hillsides, coastal to mid-elevations in the mountains.
Origin: Native
Springbank clover (Trifolium willdenovii)
Distribution: West side of the Cascades and east along the Columbia River in Washington; British Columbia south to California.
Habitat: Grassy hillsides, balds, prairies and meadows at low to moderate elevations.
Origin: Native
Strawberry clover (Trifolium fragiferum)
Distribution: Introduced and occasionally established in Washington, Oregon and Idaho; more common in eastern United States.
Habitat: Waste places, disturbed soil.
Origin: Introduced
Suckling clover (Trifolium dubium)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including forest openings, meadows, wastelots, roadsides, and lawns.
Origin: Introduced
Suffocated clover (Trifolium suffocatum)
Origin: Introduced
Teasel clover (Trifolium retusum)
Origin: Introduced
Thimble clover (Trifolium microdon)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California.
Habitat: In meadows or on rocky or sandy soil at low elevations.
Origin: Native
Thompson's clover (Trifolium thompsonii)
Distribution: Swakane Canyon, Chelan County, Washington, north to Entiat Valley, and in Douglas County opposite Swakane Canyon.
Habitat: Common on dry, grassy hillsides just below the ponderosa pine woodlands
Origin: Native
Tree clover (Trifolium ciliolatum)
Distribution: Southern Washington south to Baja California west of the Cascades and Sierra Nevada, at elevations of up to several thousand feet in the south.
Habitat: Wet meadows to rather dry, sandy soil.
Origin: Native
Twin clover (Trifolium latifolium)
Distribution: Wallowa County, Oregon to Missoula, Montana.
Habitat: Moist meadows to rocky ridges.
Origin: Native
Valparaiso clover (Trifolium microdon)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California.
Habitat: In meadows or on rocky or sandy soil at low elevations.
Origin: Native
White clover (Trifolium repens)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Established in a variety of native habitats, such as mountain meadows
Origin: Introduced
White-tip clover (Trifolium variegatum)
Distribution: Widely distributed throughout much of Washington; Alaska south to California, east towards the Rocky Mountains.
Habitat: Dry, sandy soil to moist meadows.
Origin: Native
Yellow clover (Trifolium aureum)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska south to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, railways and waste places.
Origin: Introduced
Hairy clover-fern (Marsilea vestita)
Distribution: Both sides of the Cascades in Washington; British Columbia south to California, east to Minnesota and Louisiana.
Habitat: Ponds, vernal pools, floodplains.
Origin: Native
Devil's club (Oplopanax horridus)
Distribution: Widely distributed throughout the forested areas of Washington; Alaska south to Oregon, east to Ontario.
Habitat: Moist woods at mid-elevations, especially along streams.
Origin: Native
Alaskan clubmoss (Lycopodium sitchense)
Distribution: Alaska to Oregon, east to Idaho and Montana, and across central Canada to northeastern U.S. and eastern Canada; also in eastern Asia from Japan north.
Habitat: Subalpine-alpine meadows and open rocky areas at mid-to high elevations in the mountains; occasionally in conifer forest or under brush.
Origin: Native
Bog clubmoss (Lycopodiella inundata)
Distribution: Occurring west of the Cascades crest in Washington; Alaska south to California; in scattered locations in north central Canada; from Minnesota and Ontarioa east to the Atlantic Coast.
Habitat: Wet areas, pond and lakeshores from low to middle elevations in the mountains.
Origin: Native
Common clubmoss (Lycopodium clavatum)
Distribution: Both sides of the Cascades in Washington; British Columbia south to California in western North America; circumboreal.
Habitat: Moist coniferous woods and swamps.
Origin: Native
Douglas' spikemoss clubmoss (Selaginella douglasii)
Distribution: Abundant in the Columbia River Gorge, especially on the Oregon side, west along the river to Portland, OR, and Cowlitz County, WA; also along the Clearwater River in Idaho.
Habitat: Cliffs, banks and tree trunks in humid regions at low elevations
Origin: Native
Fir clubmoss (Huperzia miyoshiana)
Origin: Native
Hybrid clubmoss (Lycopodium alpinum × Lycopodium sitchense)
Distribution: Known from British Columbia south to Oregon and east to Montana, also in Greenland and Newfoundland.
Habitat: Upper montane coniferous forest and brushy areas, and subalpine and alpine meadows. In Washington, has been found in subalpine-alpine heath meadows and on shaded mossy mineral soil below conifers on high montane roadcuts.
Origin: Native
Interrupted clubmoss (Lycopodium annotinum)
Distribution: Alaska to Oregon, east to Montana and south in the Rockies to New Mexico; across Canada and in eastern United States from Maine to Virginia
Habitat: Moist forests, bog edges and rocky areas, lowlands to subalpine
Origin: Native
Lesser clubmoss (Selaginella douglasii)
Distribution: Abundant in the Columbia River Gorge, especially on the Oregon side, west along the river to Portland, OR, and Cowlitz County, WA; also along the Clearwater River in Idaho.
Habitat: Cliffs, banks and tree trunks in humid regions at low elevations
Origin: Native
Marsh clubmoss (Lycopodiella inundata)
Distribution: Occurring west of the Cascades crest in Washington; Alaska south to California; in scattered locations in north central Canada; from Minnesota and Ontarioa east to the Atlantic Coast.
Habitat: Wet areas, pond and lakeshores from low to middle elevations in the mountains.
Origin: Native
Northern bog clubmoss (Lycopodiella inundata)
Distribution: Occurring west of the Cascades crest in Washington; Alaska south to California; in scattered locations in north central Canada; from Minnesota and Ontarioa east to the Atlantic Coast.
Habitat: Wet areas, pond and lakeshores from low to middle elevations in the mountains.
Origin: Native
Pacific clubmoss (Huperzia continentalis)
Distribution: In the Olympics and Cascades mountains in Washington; primarily Alaska to Washington, east to Montana; also in Wyoming and Colorado, scattered across northern Canada and on Greenland.
Habitat: Subalpine and alpine meadows, heath, and rocky slopes. Usually at high elevations.
Origin: Native
Prickly tree clubmoss (Lycopodium dendroideum)
Distribution: Widespread across boreal forests of North America, south to northern Washington, Idaho, Montana, Colorado, and NE U.S. Also found in Asia. In Washington, known from scattered locations in the west Cascades and in Pend Oreille county.
Habitat: Woodlands and open brushy areas. In Washington, found mostly among rock or talus with thick moss or duff layers, often under brush or on edges of forest. At mid elevations in the mountains.
Origin: Native
Ptarmigan clubmoss (Lycopodium lagopus)
Origin: Native
Sitka clubmoss (Lycopodium sitchense)
Distribution: Alaska to Oregon, east to Idaho and Montana, and across central Canada to northeastern U.S. and eastern Canada; also in eastern Asia from Japan north.
Habitat: Subalpine-alpine meadows and open rocky areas at mid-to high elevations in the mountains; occasionally in conifer forest or under brush.
Origin: Native
Stiff clubmoss (Lycopodium annotinum)
Distribution: Alaska to Oregon, east to Montana and south in the Rockies to New Mexico; across Canada and in eastern United States from Maine to Virginia
Habitat: Moist forests, bog edges and rocky areas, lowlands to subalpine
Origin: Native
Western clubmoss (Huperzia occidentalis)
Distribution: Coastal ranges from SE Alaska and SW Yukon south to Oregon; also in SE British Columbia, northern Idaho, and northwest Montana. Not found outside North America. In Washington, found from the west side of the Cascades west to the coast.
Habitat: In shaded conifer forest, usually where moist such as along streams and in depressions; rooted on decaying logs, duff, or soil. Low to mid elevations.
Origin: Native
Chairmaker's clubrush (Schoenoplectus pungens)
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread throughout North America.
Habitat: Marshes and wet, low ground; tolerent of alkali.
Origin: Native
Low clubrush (Isolepis cernua)
Distribution: Coastal from Southern British Columbia south to northern Mexico.
Habitat: Usually in brackish to saline water of marshes, beaches, and shores.
Origin: Native
Low lateral clubrush (Isolepis cernua)
Distribution: Coastal from Southern British Columbia south to northern Mexico.
Habitat: Usually in brackish to saline water of marshes, beaches, and shores.
Origin: Native
Swaying clubrush (Schoenoplectus subterminalis)
Distribution: Chiefly west of the Cascades, southern Alaska to southern Oregon; also in northern Idaho, northwest Montana, and eastern United States.
Habitat: Quiet, shallow water 2-8 dm. deep,
Origin: Native
Tufted clubrush (Trichophorum cespitosum)
Distribution: Circumboreal, extending south in North America chiefly west of the Cascades to central Oregon; also in North Carolina, Utah and Idaho.
Habitat: Sphagnum bogs, marshes, and other very wet places.
Origin: Native
Water clubrush (Schoenoplectus subterminalis)
Distribution: Chiefly west of the Cascades, southern Alaska to southern Oregon; also in northern Idaho, northwest Montana, and eastern United States.
Habitat: Quiet, shallow water 2-8 dm. deep,
Origin: Native
Coast (Polypodium scouleri)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south along the coast to California.
Habitat: Cliffs and rocky outcroppings along the coast.
Origin: Native
Cobraplant (Darlingtonia californica)
Distribution: Introduced at Summer Lake in Washington; Lane County, Oregon to northwest California.
Habitat: Bogs along coast, along streams, often on serpentine
Origin: Introduced
Cock's-head (Astragalus agrestis)
Distribution: Occurring east of the Cascades crest in Washington; widely distributed in the western, central, and northeastern regions of North America.
Habitat: Moist spots in sagebrush plains, and mountain meadows to alpine slopes.
Origin: Native
Canada cocklebur (Xanthium strumarium)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout most of North America.
Habitat: Fields, waste places, flood lanes and lake beaches.
Origin: Native
Common cocklebur (Xanthium strumarium)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout most of North America.
Habitat: Fields, waste places, flood lanes and lake beaches.
Origin: Native
Spiny cockleburr (Xanthium spinosum)
Origin: Introduced from South America (although treated as native in CA by Jeps. Man.)
Codlins-and-cream (Epilobium hirsutum)
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
Coldenia (Tiquilia nuttallii)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Utah.
Habitat: Sagebrush plains.
Origin: Native
Rattan collinsia (Collinsia rattanii)
Distribution: West of the Cascades in southern Washington, through the Columbia River Gorge to the John Day valley in Oregon.
Habitat: Open woods at low elevations.
Origin: Native
Rattan collinsia (Collinsia rattanii)
Distribution: West of the Cascades in southern Washington, through the Columbia River Gorge to the John Day valley in Oregon.
Habitat: Open woods at low elevations.
Origin: Native
Bristle-flowered collomia (Collomia macrocalyx)
Origin: Native
Diffuse collomia (Collomia tenella)
Distribution: Mostly east of the Cascades in Washington; British Columbia south to Nevada, east to Idaho, Utah and Wyoming.
Habitat: Dry, open places from the plains to moderate elevations in the mountains.
Origin: Native
Large-flowered collomia (Collomia grandiflora)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Wyoming.
Habitat: Rather dry, open to lightly wooded areas, lowlands to moderate elevations in the mountains.
Origin: Native
Larsen's alpine collomia (Collomia larsenii)
Distribution: Occurring in the Olympic and Cascade Mountains in Washington; Washington south to California.
Habitat: Rocky, often moist slopes at high elevations in the mountains.
Origin: Native
Narrow-leaf collomia (Collomia linearis)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to California, east to Ontario and New Mexico.
Habitat: Dry to somewhat moist, open or lightly shaded areas in the lowlands to moderate elevations in the mountains.
Origin: Native
Talus collomia (Collomia larsenii)
Distribution: Occurring in the Olympic and Cascade Mountains in Washington; Washington south to California.
Habitat: Rocky, often moist slopes at high elevations in the mountains.
Origin: Native
Varied-leaf collomia (Collomia heterophylla)
Distribution: Occurring mostly west of the Cascades in Washington; British Columbia south to California, east to Idaho.
Habitat: Woods, forest openings and stream banks, low to moderate elevations in the mountains.
Origin: Native
Yellow-staining collomia (Collomia tinctoria)
Distribution: Occurring east of the Cascades in Washington; Washington south to California, east to central Idaho and southeast Oregon.
Habitat: Dry, open places in the foothills to moderate or mid-elevations in the mountains.
Origin: Native
Coltsfoot (Tussilago farfara)
Distribution: In scattered locations in western Washington; widespread in eastern North America.
Habitat: Waste ground, disturbed forest understory, and near areas of garden cultivation.
Origin: Introduced from Eurasia
Hybrid coltsfoot (Petasites ×vitifolius)
Origin: Native
Wenatchee coltsfoot (Petasites ×vitifolius)
Origin: Native
European columbine (Aquilegia vulgaris)
Distribution: Introduced as a garden flower, occasionally escaping.
Habitat: Disturbed soil near gardens.
Origin: Introduced
Yellow columbine (Aquilegia flavescens)
Distribution: East of the Cascades, British Columbia to Kittitas County, Washington, east to Alberta, then south to Colorado; also, the Wallowa Mountains of Oregon
Habitat: Moist mountain meadows and talus to alpine slopes
Origin: Native
Combleaf (Polyctenium fremontii)
Distribution: Known only from Grant County in Washington; Washington south to California, east to Idaho and Nevada.
Habitat: Open areas in sagebrush-steppe.
Origin: Native
Bristly combseed (Pectocarya setosa)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Idaho, Utah, and New Mexico.
Habitat: Open areas in sagebrush-steppe habitat.
Origin: Native
Little combseed (Gruvelia pusilla)
Distribution: East of the Cascades crest in Chelan and Klickitat counties in Washington; Washington, south to California, introduced and disjunct in Chile.
Habitat: Dry, open places at lower elevations.
Origin: Native
Shortleaf combseed (Pectocarya penicillata)
Distribution: East of the Cascades, southern British Columbia to Baja California, east to Idaho and Utah.
Habitat: Dry, open areas, often in sandy soil and among sagebrush, at low elevations.
Origin: Native
Western chocolate come (Rudbeckia occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Moist openings in forests at moderate to mid-elevations in the mountains.
Origin: Native
Common comfrey (Symphytum officinale)
Distribution: Distributed west of the Cascades in Washington; widely distributed throughout North America except in extreme north and south states/provinces.
Habitat: Escaped from cultivation, often found in disturbed areas.
Origin: Introduced from Europe
Creeping comfrey (Symphytum grandiflorum)
Origin: Introduced from Caucasus
Hybrid comfrey (Symphytum ×uplandicum)
Origin: Introduced from Europe
Prickly comfrey (Symphytum asperum)
Distribution: Introduced and occasionally escaped from cultivation, scattered in the United States; chiefly west of the Cascades in Washington.
Habitat: Roadsides and other disturbed habitats.
Origin: Introduced from sw Asia
Rough comfrey (Symphytum asperum)
Distribution: Introduced and occasionally escaped from cultivation, scattered in the United States; chiefly west of the Cascades in Washington.
Habitat: Roadsides and other disturbed habitats.
Origin: Introduced from sw Asia
White comfrey (Symphytum orientale)
Origin: Introduced from sw Asia
California compassplant (Wyethia angustifolia)
Distribution: Occurring in southwestern Washington and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Meadows and moist, open hillsides at low elevations.
Origin: Native
Or showy coneflower (Rudbeckia alpicola)
Origin: Native
Prairie coneflower (Ratibida columnifera)
Distribution: Southeast British Columbia and Montana, east to Minnesota and south to Texas.
Habitat: Prairies, plains and waste ground.
Origin: Introduced in WA
Upright prairie coneflower (Ratibida columnifera)
Distribution: Southeast British Columbia and Montana, east to Minnesota and south to Texas.
Habitat: Prairies, plains and waste ground.
Origin: Introduced in WA
Western coneflower (Rudbeckia occidentalis)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington south to California, east to the Rocky Mountains.
Habitat: Moist openings in forests at moderate to mid-elevations in the mountains.
Origin: Native
Coneplant (Hemitomes congestum)
Distribution: West of the Cascades in Washington; Vancouver Island and mainland British Columbia south to Monterey County, California.
Habitat: Rich humus in damp coniferous forests at mid-elevations in the mountains.
Origin: Native
South American conyza (Conyza bonariensis)
Distribution: Introduced from Oregon through Arizona and Texas to Florida
Habitat: Occasionally escapes from cultivation
Origin: Introduced
Northern false coolwort (Bolandra oregana)
Distribution: Along the Columbia River Gorge and in southeastern Washington; Washington south to Oregon along the lower Columbia River Gorge, and along the Snake River and its tributaries in Oregon and Idaho.
Habitat: Moist, mossy rocks, usually near waterfalls.
Origin: Native
Oregon coolwort (Sullivantia oregana)
Distribution: Columbia River Gorge and lower Willamatte Valley, Oregon.
Habitat: On moist cliffs, especially near waterfalls.
Origin: Native
Coon's-tail (Ceratophyllum demersum)
Distribution: Throughout much of temperate North America
Habitat: Standing to slow-moving water, from the lowlands to mid-elevations in the mountains
Origin: Native
Copperbush (Elliottia pyroliflora)
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
Red coraldrops (Besseya rubra)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon, east to Idaho and Montana.
Habitat: Open slopes and dry meadows in the foothills and lowlands.
Origin: Native
Early coralroot (Corallorhiza trifida)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to the Atlantic Coast throughout the northern half of North America.
Habitat: Fairly deep, moist woods, montane to subalpine in the Pacific Northswest.
Origin: Native
Northern coralroot (Corallorhiza trifida)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to the Atlantic Coast throughout the northern half of North America.
Habitat: Fairly deep, moist woods, montane to subalpine in the Pacific Northswest.
Origin: Native
Pacific coralroot (Corallorhiza mertensiana)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to Montana and Wyoming.
Habitat: Usually in moist coniferous forests, low to mid-elevations in the mountains.
Origin: Native
Western coralroot (Corallorhiza mertensiana)
Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to Montana and Wyoming.
Habitat: Usually in moist coniferous forests, low to mid-elevations in the mountains.
Origin: Native
Alkali cordgrass (Spartina gracilis)
Origin: Native
Chilean cordgrass (Spartina densiflora)
Origin: Introduced from Chile
English cordgrass (Spartina anglica)
Origin: Introduced from Europe
Freshwater cordgrass (Spartina pectinata)
Distribution: Eastern Washington and Oregon, east to Newfoundland and North Carolina.
Habitat: Ditches, ponds, and fresh-water marshes.
Origin: Native
Prairie cordgrass (Spartina pectinata)
Distribution: Eastern Washington and Oregon, east to Newfoundland and North Carolina.
Habitat: Ditches, ponds, and fresh-water marshes.
Origin: Native
Saltmeadow cordgrass (Spartina patens)
Origin: Introduced from the Atlantic Coast of North America
Saltwater cordgrass (Spartina alterniflora)
Distribution: Introduced in Pacific County, Washington; common along the Atlantic and Gulf Coasts of the United States.
Habitat: Along the coast in brackish water.
Origin: Introduced from the Atlantic coast of North America
Smooth cordgrass (Spartina alterniflora)
Distribution: Introduced in Pacific County, Washington; common along the Atlantic and Gulf Coasts of the United States.
Habitat: Along the coast in brackish water.
Origin: Introduced from the Atlantic coast of North America
Townsend's cordgrass (Spartina ×townsendii)
Origin: Introduced from Europe
Columbia coreopsis (Coreopsis tinctoria)
Distribution: Occurring chiefly east of the Cascades crest in Washington; widely distributed throughout North America except at northernmost latitudes.
Habitat: Open and disturbed areas at low to mid elevations where seasonally moist.
Origin: Native
Sand corn (Toxicoscordion paniculatum)
Distribution: East of the Cascades crest in Washington; Washington south to California, east to Montana and Arizona.
Habitat: Common in sagebrush desert to ponderosa or lodgepole pine forests.
Origin: Native
Sand corn (Toxicoscordion paniculatum)
Distribution: East of the Cascades crest in Washington; Washington south to California, east to Montana and Arizona.
Habitat: Common in sagebrush desert to ponderosa or lodgepole pine forests.
Origin: Native
Cornbind (Fallopia convolvulus)
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Cultivated or waste ground.
Origin: Introduced
Common corncockle (Agrostemma githago)
Distribution: Introduced and well established in Washington; also occurring in Oregon, less common in Idaho and Montana.
Habitat: Roadsides and wasteland.
Origin: Introduced, European
Garden cornflower (Centaurea cyanus)
Distribution: Widespread introductions in the Pacific Northwest
Habitat: Readily established when escaped from cultivation
Origin: Introduced from the Mediterranean region
Mountain cornflower (Centaurea montana)
Distribution: In scattered locations throughout Washington, but more common west of the Cascades; British Columbia to Oregon, east to Montana and Utah; in upper midwestern and northeastern U.S. and Canada.
Habitat: Occasionally escapes from cultivation; open, disturbed areas in shrub-steppe, forests, and along roadsides.
Origin: Introduced from Europe
Keel-fruit cornsalad (Valerianella carinata)
Origin: Introduced from Europe
Marsh corydalis (Corydalis aquae-gelidae)
Distribution: In the Cascades in Clackamas and Multnomah Counties, Oregon
Habitat: Wet places of shaded forests.
Origin: Native
Costmary (Tanacetum balsamita)
Distribution: Introduced and escaped over much of the United States; not common in the Pacific Northwest.
Habitat: Roadsides and other waste places.
Origin: Introduced
Bearberry cotoneaster (Cotoneaster dammeri)
Origin: Introduced from China
Bullate cotoneaster (Cotoneaster rehderi)
Origin: Introduced from China.
Diel's cotoneaster (Cotoneaster dielsianus)
Origin: Introduced from China
Few-flowered cotoneaster (Cotoneaster nitens)
Origin: Introduced from China
Franchet's cotoneaster (Cotoneaster franchetii)
Distribution: Distributed west of the Cascades in Washington; Washington south to California
Habitat: Lowland forest edges, grassy balds, disturbed areas.
Origin: Introduced from China
Himalayan cotoneaster (Cotoneaster simonsii)
Origin: Introduced from the Himalayas
Late cotoneaster (Cotoneaster lacteus)
Distribution: Occurring in lowland western Washington; British Columbia to California.
Habitat: Disturbed areas, thickets, and forest margins.
Origin: Introduced from China
Milk-flower cotoneaster (Cotoneaster lacteus)
Distribution: Occurring in lowland western Washington; British Columbia to California.
Habitat: Disturbed areas, thickets, and forest margins.
Origin: Introduced from China
Orange cotoneaster (Cotoneaster franchetii)
Distribution: Distributed west of the Cascades in Washington; Washington south to California
Habitat: Lowland forest edges, grassy balds, disturbed areas.
Origin: Introduced from China
Puckered-leaf cotoneaster (Cotoneaster rehderi)
Origin: Introduced from China.
Rock cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest at low elevations in Washington; British Columbia south to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Rockspray cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest at low elevations in Washington; British Columbia south to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Shiny cotoneaster (Cotoneaster lucidus)
Origin: Introduced from Siberia & Mongolia
Simon's cotoneaster (Cotoneaster simonsii)
Origin: Introduced from the Himalayas
Spreading cotoneaster (Cotoneaster divaricatus)
Origin: Introduced from China
Tengyueh cotoneaster (Cotoneaster tengyuehensis)
Origin: Introduced from China
Tree cotoneaster (Cotoneaster gamblei)
Wall cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest at low elevations in Washington; British Columbia south to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Willow-leaved cotoneaster (Cotoneaster salicifolius)
Origin: Introduced from China
Chamisso's cotton-grass (Eriophorum chamissonis)
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
Russet cottongrass (Eriophorum chamissonis)
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
Slender cottongrass (Eriophorum gracile)
Distribution: Alaska, Canada and the northern half on the United States
Habitat: Wet places, mid- to high elevation in the mountains
Origin: Native
Tassel cottongrass (Eriophorum viridicarinatum)
Origin: Native
Tawny cottongrass (Eriophorum virginicum)
Origin: Introduced
Field cottonrose (Logfia arvensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.
Habitat: Dry, open waste land and overgrazed ranges.
Origin: Introduced
Little cottonrose (Logfia minima)
Distribution: Native to northern Europe
Habitat: Heaths, sandy areas
Origin: Introduced from Europe
Black cottonwood (Populus nigra)
Origin: Introduced
Black cottonwood (Populus trichocarpa)
Distribution: Occurring throughout Washington; Alaska to California, east to Alberta and Wyoming.
Habitat: Streambanks and moist woods, sea level to mid-elevations in the mountains.
Origin: Native
Black cottonwood (Populus trichocarpa)
Distribution: Occurring throughout Washington; Alaska to California, east to Alberta and Wyoming.
Habitat: Streambanks and moist woods, sea level to mid-elevations in the mountains.
Origin: Native
Cous (Lomatium cous)
Distribution: Southeast Washington and northeast Oregon,east through Idaho to Montana and Wyoming
Habitat: Dry, open, often rocky places often with sagebrush; common at low elevations, occasionally found much higher
Origin: Native
American cow-parsnip (Heracleum maximum)
Distribution: Widely distributed throughout Washington; occurring throughout North America except for southeastern and lower Midwest of U.S.
Habitat: Moist areas, low to mid-elevations.
Origin: Native
Cow-poison (Delphinium trolliifolium)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington south to California.
Habitat: Moist, shady woods at low to moderate elevations.
Origin: Native
Cowcockle (Vaccaria hispanica)
Distribution: Occurring in scattered locations across Washington; widely distributed throughout most of North America.
Habitat: Roadsides, railways and old fields.
Origin: Introduced from Europe
Oregon crabapple (Malus fusca)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist woods, swamps and open canyons from sea level to moderate elevations in the mountains.
Origin: Native
Western crabapple (Malus fusca)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist woods, swamps and open canyons from sea level to moderate elevations in the mountains.
Origin: Native
Hairy crabgrass (Digitaria sanguinalis)
Distribution: A weed in most of the United States.
Habitat: Lawns, gardens, and wasteland.
Origin: Introduced from Eurasia
Smooth crabgrass (Digitaria ischaemum)
Distribution: Most of southern Canada, and all of the United States except the extreme southeast and southwest.
Habitat: Lawns, roadsides and wastland, usually where moist.
Origin: Introduced from Eurasia
Cultivated cranberry (Vaccinium macrocarpon)
Distribution: In scattered locations in lowlands west of the Cascades crest; introduced British Columbia south to California; native eastern North
Origin: Introduced from NE US
High-bush cranberry (Viburnum edule)
Distribution: Widely distributed on both sides of the Cascades in Washington; Alaska south to Newfoundland, south to northern Oregon, Colorado and Pennsylvania.
Habitat: Moist woods and swamps.
Origin: Native
Large cranberry (Vaccinium macrocarpon)
Distribution: In scattered locations in lowlands west of the Cascades crest; introduced British Columbia south to California; native eastern North
Origin: Introduced from NE US
Small cranberry (Vaccinium oxycoccos)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska south to California, east to Idaho, across Canada; from the upper Midwest to the Atlantic coast.
Habitat: Usually in sphagnum bogs.
Origin: Native
Cut-leaf crane's-bill (Geranium dissectum)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California and Nevada; widely distributed in central and eastern North America.
Habitat: Disturbed ground and waste places.
Origin: Introduced from Europe
Long-stalk crane's-bill (Geranium columbinum)
Distribution: Chiefly west of the Cascades and along the Columbia River in Washington; occasional introduction in central and eastern United States.
Habitat: Waste places and disturbed ground.
Origin: Introduced from Europe
Montane crane's-bill (Geranium ibericum)
Origin: Introduced
Northern crane's-bill (Geranium bicknellii)
Distribution: Occurring on both sides of the Cascades in Washington; widely distributed throughout much of North America except along the southern U.S. boundary and lower Great Plains.
Habitat: Woodlands or open fields.
Origin: Native
Small-flower crane's-bill (Geranium pusillum)
Distribution: Occurring on both sides of the Cascades; widely distributed throughout North America except along southern border of U.S.
Habitat: Moist, waste places.
Origin: Introduced
Spanish crane's-bill (Geranium ibericum)
Origin: Introduced
Sticky purple crane's-bill (Geranium viscosissimum)
Distribution: East of the Cascades in Washington, British Columbia south to California, east to Colorado.
Habitat: Moderately dry areas, low to mid-elevations.
Origin: Native
White crane's-bill (Geranium richardsonii)
Distribution: East of the Cascades in Washington; British Columbia south to southern California and New Mexico.
Habitat: Mostly in partial shade, from the lowlands to well up in the mountains.
Origin: Native
Shining cranes-bill (Geranium lucidum)
Distribution: Western Washington; Washington south to California.
Habitat: Disturbed areas such as roadsides and ditches, usually where moist, at low elevations.
Origin: Introduced
Hedgerow cranesbill (Geranium pyrenaicum)
Origin: Introduced
Bearded creeper (Crupina vulgaris)
Distribution: Introduced in Idaho and Chelan County, Washington
Habitat: Weed or fields and roadsides
Origin: Introduced
Creeping-glow-wort (Sibbaldia procumbens)
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout western North America and northeastern North America; circumboreal.
Habitat: Open, dry to moist subalpine and alpine slopes.
Origin: Native
Creeping-Jenny (Lysimachia nummularia)
Distribution: Scattered locations west of the Cascades in Washington; British Columbia south to California and Nevada; occurring in central U.S and eastern North America.
Habitat: Moist, disturbed ground along lakes, ponds, roadsides and near gardens.
Origin: Introduced
Creeping-snowberry (Gaultheria hispidula)
Distribution: Occurring in northeast Washsington; British Columbia east to Labrador, south into northern Idaho.
Habitat: Sphagnum bogs and deep coniferous woods.
Origin: Native
Belle Isle cress (Barbarea verna)
Origin: Introduced from Eurasia
Columbia yellowcress cress (Rorippa columbiae)
Distribution: In the south-central counties of Washington; Washington south to California.
Habitat: Moist, sandy soil.
Origin: Native
Cress (Rorippa columbiae)
Distribution: In the south-central counties of Washington; Washington south to California.
Habitat: Moist, sandy soil.
Origin: Native
Field cress (Lepidium campestre)
Distribution: Distributed across Washington in scattered locations; distributed throughout much of North America.
Habitat: Dry, disturbed areas.
Origin: Introduced from Eurasia
Lava cress (Sisymbrium linifolium)
Distribution: East of the Cascades crest in Washington; British Columbia south to Arizona (not including California), east to the Rocky Mountains.
Habitat: Sagebrush-steppe communities, rock crevices.
Origin: Native
Lava cress (Sisymbrium linifolium)
Distribution: East of the Cascades crest in Washington; British Columbia south to Arizona (not including California), east to the Rocky Mountains.
Habitat: Sagebrush-steppe communities, rock crevices.
Origin: Native
Mouse-ear cress (Arabidopsis thaliana)
Distribution: Widely distributed througout Washington; widely distributed throughout North America.
Habitat: Disturbed areas, particularly near cities and towns.
Origin: Introduced from Eurasia
Shepherd's cress (Teesdalia nudicaulis)
Distribution: Introduced west of the Cascades in Washington; British Columbia south to California and in northeastern U.S.
Habitat: Sandy or gravelly soil at low elevations.
Origin: Introduced from Europe
Rosette crinklemat (Tiquilia nuttallii)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Utah.
Habitat: Sagebrush plains.
Origin: Native
Autumn crocus (Colchicum autumnale)
Distribution: not reported for elsewhere in North America.
Habitat: Lowland grassy meadows, escaping or persisting from cultivation.
Origin: Introduced
Early crocus (Crocus tommasinianus)
Origin: Introduced from SE Europe
Yellow crocus (Crocus ×stellaris)
Origin: Introduced (garden origin)
Herb of the cross (Verbena officinalis)
Origin: Introduced from Europe
Crossflower (Chorispora tenella)
Distribution: Chiefly east of the Cascades in Washington; widely distributed throughout much of western and central North America.
Habitat: Shrub-steppe habitat, both degraded and intact; disturbed areas, roadsides, and pastures.
Origin: Introduced from SW Asia
Crowberry (Empetrum nigrum)
Distribution: In the Cascades and Olympic Mountains of Washington; Alaska south to California.
Habitat: Exposed rocky bluffs, but also in peat bogs.
Origin: Native
Purple crown-vetch (Securigera varia)
Distribution: Occurring in scattered locations in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including wastelots, roadsides, and fields.
Origin: Introduced
Small crumbweed (Dysphania pumilio)
Distribution: Introduced over much of the United States.
Habitat: Sandy or gravelly soiles, waste areas.
Origin: Introduced from Australia
Crupina (Crupina vulgaris)
Distribution: Introduced in Idaho and Chelan County, Washington
Habitat: Weed or fields and roadsides
Origin: Introduced
Beaked cryptantha (Cryptantha rostellata)
Origin: Native
Common cryptantha (Cryptantha affinis)
Distribution: East of the Cascades in Washington; British Columbia south to California, east to Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forests at moderate elevations.
Origin: Native
Common cryptantha (Cryptantha intermedia)
Distribution: Washington to California, east to Idaho and Arizona
Habitat: Moderately dry, open slopes
Origin: Native
Cushion cryptantha (Cryptantha circumscissa)
Distribution: Chiefly east of the Cascades, central Washington to Baja California, east to Utah.
Habitat: Dry, open, usually sandy places in the lowlands.
Origin: Native
Desert cryptantha (Cryptantha scoparia)
Distribution: Common on the Snake River plains of Idaho, extending into adjacent Oregon, northeast Nevda and southwest Wyoming; adjunct to Yakima County, Washington, and adjacent counties.
Habitat: Dry, open slopes in the valleys, plains and foothills, common among sagebrush.
Origin: Native
Fendler's cryptantha (Cryptantha fendleri)
Origin: Native
Flaccid cryptantha (Cryptantha flaccida)
Distribution: Central and southeast Washington, south to southern California, and along the western border of Idaho.
Habitat: Dry, open slopes and flats at lower elevations.
Origin: Native
Gray cryptantha (Cryptantha leucophaea)
Distribution: Along the Columbia and lower Yakima rivers, from Wenatchee, Washington to the Dalles, Oregon.
Habitat: Dry, usually sandy places at low elevations.
Origin: Native
Large-flowered cryptantha (Cryptantha grandiflora)
Origin: Native
Matted cryptantha (Cryptantha circumscissa)
Distribution: Chiefly east of the Cascades, central Washington to Baja California, east to Utah.
Habitat: Dry, open, usually sandy places in the lowlands.
Origin: Native
Narrow-stem cryptantha (Cryptantha gracilis)
Origin: Native
Northern cryptantha (Cryptantha celosioides)
Distribution: Chiefly east of the Cascades, from southern British Colombia to Grant County, Oregon, east to North Dakota.
Habitat: Dry, open places in the valleys, plains and foothills, occasionally higher.
Origin: Native
Obscure cryptantha (Cryptantha ambigua)
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia, east to western Montana and south to California and Colorado.
Habitat: Dry, open places from the lowlands to moderate elevations in the mountains.
Origin: Native
Pinewoods cryptantha (Cryptantha simulans)
Origin: Native
Slender cryptantha (Cryptantha affinis)
Distribution: East of the Cascades in Washington; British Columbia south to California, east to Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forests at moderate elevations.
Origin: Native
Snake River cryptantha (Cryptantha spiculifera)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to Oregon and Nevada, east to Idaho, Montana, Wyoming, and Utah.
Habitat: Dry, open slopes and flats in the plains, valleys and foothills.
Origin: Native
Thompson's cryptantha (Cryptantha thompsonii)
Distribution: Serpentine soils in the Wenatchee Mountains and adjacent Cascades of Washington
Habitat: Moderate to mid-elevations in the mountains
Origin: Native
Torrey's cryptantha (Cryptantha torreyana)
Distribution: Widely distributed east of the Cascades in Washington; British Columbia to Oregon, east to Montana.
Habitat: Open areas, low to mid-elevations in the mountains.
Origin: Native
Watson's cryptantha (Cryptantha watsonii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open hillsides, sagebrush-steppe plains, and forest openings at low to middle elevations.
Origin: Native
Wilke's cryptantha (Cryptantha ambigua)
Distribution: Occurring on both sides of the Cascades in Washington; southern British Columbia, east to western Montana and south to California and Colorado.
Habitat: Dry, open places from the lowlands to moderate elevations in the mountains.
Origin: Native
Wingnut cryptantha (Cryptantha pterocarya)
Distribution: East of the Cascades in Washington; Washington south to California, east to Idaho, Colorado and Texas.
Habitat: Dry, open, often sandy areas of sagebrush and grasslands.
Origin: Native
Cuckooflower (Cardamine pratensis)
Distribution: Currently known only from King County in Washington; British Columbia south to Oregon; more commonly found in northeastern North America.
Habitat: Disturbed areas including lawns and forest edges of urban and suburban areas.
Origin: Introduced
Wild cucumber (Echinocystis lobata)
Distribution: Chiefly east of the Cascades in Washington; occurring throughout much of North America.
Habitat: Moist bottomlands and thickets.
Origin: Introduced
California cudweed (Pseudognaphalium californicum)
Origin: Native
Cotton batting cudweed (Pseudognaphalium stramineum)
Distribution: Widely distributed throughout much of Washington; British Columbia south to California, east to the Great Plains of the U.S.; New York south to South Carolina.
Habitat: Open, usually moist places, often on disturbed soil.
Origin: Native
Cotton batting cudweed (Pseudognaphalium stramineum)
Distribution: Widely distributed throughout much of Washington; British Columbia south to California, east to the Great Plains of the U.S.; New York south to South Carolina.
Habitat: Open, usually moist places, often on disturbed soil.
Origin: Native
Cudweed (Logfia arvensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.
Habitat: Dry, open waste land and overgrazed ranges.
Origin: Introduced
Lowland cudweed (Gnaphalium palustre)
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to the Great Plains.
Habitat: Open areas at low elevations where moist at least in spring.
Origin: Native
Marsh cudweed (Gnaphalium uliginosum)
Distribution: Widespread throughout Washington; Alaska south to Oregon, east across the central U.S. and Canada to the Atlantic Coast.
Habitat: Moist areas, streambanks and waste ground.
Origin: Introduced
Purple cudweed (Gamochaeta ustulata)
Distribution: Widespread west of the Cascades in Washington; British Columbia south to California.
Habitat: Usually in sandy soil, often in disturbed areas.
Origin: Native
Purple cudweed (Gamochaeta ustulata)
Distribution: Widespread west of the Cascades in Washington; British Columbia south to California.
Habitat: Usually in sandy soil, often in disturbed areas.
Origin: Native
Slender cudweed (Pseudognaphalium thermale)
Distribution: Occurring on both sides of the Cascades crest in Washingotn; British Columbia south to California, east to Montana and Utah.
Habitat: Dry, sandy banks and ditches, open woods of ponderosa pine and Douglas fir, and mixed deciduous forests.
Origin: Native
Small cudweed (Logfia minima)
Distribution: Native to northern Europe
Habitat: Heaths, sandy areas
Origin: Introduced from Europe
Spoon-leaf cudweed (Gamochaeta ustulata)
Distribution: Widespread west of the Cascades in Washington; British Columbia south to California.
Habitat: Usually in sandy soil, often in disturbed areas.
Origin: Native
Sticky cudweed (Pseudognaphalium macounii)
Origin: Native
Weedy cudweed (Pseudognaphalium luteoalbum)
Distribution: Locally introduced, chiefly west of the Cascades.
Habitat: Disturbed waste ground.
Origin: Introduced
Western marsh cudweed (Gnaphalium palustre)
Distribution: Widely distributed throughout Washington; British Columbia south to California, east to the Great Plains.
Habitat: Open areas at low elevations where moist at least in spring.
Origin: Native
Winded cudweed (Pseudognaphalium macounii)
Origin: Native
Sagittaria cuneaire (Sagittaria cuneata)
Distribution: East of the Cascades in Washington; British Columbia south to California, east to New York.
Habitat: Ponds, lake shores and ditches.
Origin: Native
Queen's cup (Clintonia uniflora)
Distribution: Occurring in forested areas throughout Washington; Alaska south to California, east to Montana.
Habitat: Moist coniferous forests, from the foothills to fairly high elevations in the mountains
Origin: Native
Alpine prickly currant (Ribes montigenum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Subalpine to alpine ridges, talus slopes and rock crevices.
Origin: Native
American red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and rocky slopes at mid- to high elevations in the mountains.
Origin: Native
California black currant (Ribes bracteosum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist to wet woods, low to mid-elevations.
Origin: Native
Cultivated black currant (Ribes nigrum)
Origin: Introduced
Hall's sticky currant (Ribes viscosissimum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open to timbered, moist to fairly dry slopes, moderate to high elevations.
Origin: Native
Hudson Bay currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east across Canada to the Atlantic Coast, and east in the U.S. to the Rocky Mountains and Great Lakes area.
Habitat: Stream banks, moist woods and meadow margins at mid-elevations in the mountains.
Origin: Native
Maple-leaf currant (Ribes acerifolium)
Distribution: Occurring in the Cascades, Olympic Mountains, and northeastern Washington; Southern British Columbia south to Oregon, east to Idaho.
Habitat: Stream banks, meadowland thickets, open ridges and rock slides, mid-elevations in the mountains to timberline.
Origin: Native
Mountain currant (Ribes viscosissimum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open to timbered, moist to fairly dry slopes, moderate to high elevations.
Origin: Native
Northern black currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east across Canada to the Atlantic Coast, and east in the U.S. to the Rocky Mountains and Great Lakes area.
Habitat: Stream banks, moist woods and meadow margins at mid-elevations in the mountains.
Origin: Native
Northern red currant (Ribes rubrum)
Origin: Introduced
Sticky currant (Ribes viscosissimum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open to timbered, moist to fairly dry slopes, moderate to high elevations.
Origin: Native
Sticky currant (Ribes viscosissimum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Open to timbered, moist to fairly dry slopes, moderate to high elevations.
Origin: Native
Stink currant (Ribes bracteosum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California.
Habitat: Moist to wet woods, low to mid-elevations.
Origin: Native
Swamp currant (Ribes lacustre)
Distribution: Widely distributed throughout much of Washington; Alaska south to California, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and streambanks to drier forest slopes at low to moderate elevations.
Origin: Native
Swamp red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and rocky slopes at mid- to high elevations in the mountains.
Origin: Native
Trailing black currant (Ribes laxiflorum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, east to the Rocky Mountains.
Habitat: Wet coastal woods to mid-elevations in the mountains.
Origin: Native
Western black currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to California, east across Canada to the Atlantic Coast, and east in the U.S. to the Rocky Mountains and Great Lakes area.
Habitat: Stream banks, moist woods and meadow margins at mid-elevations in the mountains.
Origin: Native
Wild red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to Oregon, east across the northern half of North America to the Atlantic Coast.
Habitat: Moist woods and rocky slopes at mid- to high elevations in the mountains.
Origin: Native
Winaha currant (Ribes wolfii)
Origin: Native
Wolf's currant (Ribes wolfii)
Origin: Native
Mock cypress (Bassia scoparia)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia
Mock cypress (Bassia scoparia)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia
Summer cypress (Bassia scoparia)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia
Summer cypress (Bassia scoparia)
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia to California, east across U.S. and Canada to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other dry, distrubed, open areas at low to middle elevations.
Origin: Introduced from eastern Europe and southestern Asia