Vascular Plants

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

Browse by common name:
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Common names beginning with C:
517 common names
Show only taxa with photos
Display as:
Index to common names:
cabbage, cactus, calliopsis, camas, camelthorn, campion, Canadian, cancerwort, candle, candyflower, candystick, candytuft, cap, carelessweed, carpetweed, carrot, cascara, cat's eye, cat's-ear, cat's-eye, cat-tail, catchfly, catchweed, catnip, cats-ear, cattail, ceanothus, cedar, celandine, celery, centaury, cerastium, chaenactis, chaffweed, chain-tree, chamomile, Charlie, charlock, checker-mallow, checkerbloom, cheeseweed, cherry, cherry-laurel, chervil, chess, chestnut, chick-pea, chickweed, chicory, Chinese, chinquapin, chives, chokeberry, chokecherry, chucklusa, cinquefoil, clarkia, clary, Claytonia, claytonia, cleareye, cleavers, clematis, cliff-brake, cliff-fern, cliffbrake, clotbur, cloudberry, clover, clover-fern, club, club-rush, clubmoss, clubrush, coast, cobraplant, cock's-head, cocklebur, cockleburr, codlins-and-cream, coldenia, collinsia, collomia, coltsfoot, columbine, combleaf, combseed, come, comfrey, coneflower, coneplant, conyza, coolwort, coon's-tail, copperbush, coraldrops, coralroot, cordgrass, coreopsis, corn, corncockle, cornflower, corydalis, costmary, cotoneaster, cotton, cotton-grass, cottongrass, cottonrose, cottontop, cottonweed, cottonwood, cous, cow-parsnip, cow-poison, cowcockle, crabapple, crabgrass, cranberry, crane's-bill, cranes-bill, cranesbill, crazyweed, creeper, creeping-glow-wort, creeping-Jenny, creeping-snowberry, cress, crinklemat, crocus, cross, crossflower, crowberry, crowfoot, crown, crown vetch, crumbweed, crupina, cryptantha, cuckooflower, cucumber, cudweed, cuneaire, cup, currant, cut-leaf, cyclamen, cypress
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
Flowers: May-August
Deer cabbage (Nephrophyllidium crista-galli)
Origin: Native
Skunk cabbage (Lysichiton americanus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to northern Idaho and western Montana.
Habitat: Marshes, swamps, and forested wetlands from sea level to middle elevations in the mountains.
Origin: Native
Flowers: March-July
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
Flowers: May-August
Wild cabbage (Caulanthus lasiophyllus)
Distribution: Reported from Washington; Washington to Baja California, Mexico, east to Utah, Arizona, and New Mexico.
Habitat: Sandy banks, gravelly or rocky areas, often where disturbed.
Origin: Native
Flowers: April-June
Yellow skunk cabbage (Lysichiton americanus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to northern Idaho and western Montana.
Habitat: Marshes, swamps, and forested wetlands from sea level to middle elevations in the mountains.
Origin: Native
Flowers: March-July
Dark-spine ball cactus (Pediocactus nigrispinus)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to southeastern Oregon, east to western Idaho.
Habitat: Lowland to montane sagebrush desert, grasslands, and coniferous forests.
Origin: Native
Flowers: April-July
Snowball cactus (Pediocactus nigrispinus)
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to southeastern Oregon, east to western Idaho.
Habitat: Lowland to montane sagebrush desert, grasslands, and coniferous forests.
Origin: Native
Flowers: April-July
Calliopsis (Coreopsis tinctoria)
Distribution: Occurring chiefly east of the Cascades crest and along the lower Columbia River in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Open and disturbed areas at low to mid elevations where seasonally moist.
Origin: Native
Flowers: June-August
Common camas (Camassia quamash)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Open, moist areas, often where dry by late spring, from lowlands to mid-elevations in the mountains.
Origin: Native
Flowers: April-June
Cusick's camas (Camassia cusickii)
Distribution: Disjunct in Klickitat County in Washington; Northeastern Oregon and adjacent western Idaho.
Habitat: Moist slopes and seeps, often montane.
Origin: Native
Flowers: May-July
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
Flowers: June-August
Great camas (Camassia leichtlinii)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Habitat: Meadows, prairies, balds, and hillsides where moist, at least in spring.
Origin: Native
Flowers: April-May
Camelthorn (Alhagi maurorum)
Distribution: Occurring east of the Cascades crest in Washington; Washington, Idaho, and California east to Colorado and Texas.
Habitat: Disturbed areas in arid lands at low to moderate elevations.
Origin: Introduced from Asia
Flowers: June-August
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
Flowers: June-August
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
Flowers: June-August
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
Flowers: June - August
Rose campion (Lychnis 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
Flowers: June-August
White campion (Silene latifolia)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, pastures, irrigation ditches, forest edge, thickets, wastelots, and other disturbed open areas, often where moist.
Origin: Introduced from Europe
Flowers: May-August
Canadian (Elodea canadensis)
Distribution: Throughout most of the United States
Habitat: Common in slow-moving, often alkaline water, in the Pacific Northwest
Origin: Native
Flowers: July - September
Sharpleaf cancerwort (Kickxia elatine)
Origin: Introduced
Bog candle (Platanthera dilatata)
Distribution: Widely distributed through the mountainous and forested areas of Washington; Alaska south to California, east to the Rocky Mountains; also in northeastern in North America.
Habitat: Wet meadows, forest openings, and streambanks from low elevations to the subalpine.
Origin: Native
Flowers: June-September
Candyflower (Claytonia sibirica)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana and northeastern Oregon and southeastern Idaho.
Habitat: Moist, usually shady places, lowlands to mid-elevations in the mountains.
Origin: Native
Flowers: March-September
Spreading candyflower (Montia diffusa)
Distribution: Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to Marin County, California.
Habitat: Moist woods at low elevation.
Origin: Native
Flowers: April-July
Candystick (Allotropa virgata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, and Nevada.
Habitat: Deep humus of coniferous forests at low to middle elevations.
Origin: Native
Flowers: May-August
Wild candytuft (Noccaea fendleri)
Distribution: Occurring in the mountains throughout Washington; British Columbia south to California, east to Montana and New Mexico.
Habitat: Common in open, rocky areas at mid-elevations in the mountains.
Origin: Native
Flowers: May-August
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
Flowers: March-May
Carelessweed (Cyclachaena xanthiifolia)
Distribution: Ocurring east of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Bottomlands and other moist, open, often disturbed areas.
Origin: Introduced from south-central Canada and the central U.S.
Flowers: August-October
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
Flowers: June-October
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
Flowers: June-October
American wild carrot (Daucus pusillus)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southwestern British Columbia to California, east across the southern U.S. to the Atlantic Coast.
Habitat: Grassy balds, headlands, rocky outcroppings, and other to seasonally moist open areas at low elevations.
Origin: Native
Flowers: May-July
Wild carrot (Daucus carota)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, meadows, lawns, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: June-September
Cascara (Frangula purshiana)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Forest understory and margins from low to moderate elevations in the mountains.
Origin: Native
Flowers: April-June
Pine woods cat's eye (Cryptantha simulans)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush desert and ponderosa pine forest openings, often where disturbed.
Origin: Native
Flowers: May-July
Sand dune cat's eye (Cryptantha fendleri)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Sand dunes and very sandy soil at low to middle elevations.
Origin: Native
Flowers: May-July
Hairy cat's-ear (Hypochaeris radicata)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, and further east across most of North America to the Atlantic Coast.
Habitat: Disturbed areas, grassy balds, prairies, grasslands, lawns, and roadsides.
Origin: Introduced from Europe
Flowers: May-October
Rough cat's-ear (Hypochaeris radicata)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, and further east across most of North America to the Atlantic Coast.
Habitat: Disturbed areas, grassy balds, prairies, grasslands, lawns, and roadsides.
Origin: Introduced from Europe
Flowers: May-October
Smooth cat's-ear (Hypochaeris glabra)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California, also from Texas to the northeastern U.S.
Habitat: Roadsides, rocky balds, meadows, wastelots, and other disturbed open areas at low elevations, often where sandy.
Origin: Introduced from Europe
Flowers: May-June
Basin cat's-eye (Cryptantha ambigua)
Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to western Montana, Wyoming, Utah, and Colorado.
Habitat: Dry, open places from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: June-July
Clearwater cat's-eye (Cryptantha intermedia)
Distribution: Occurring on both sides of the Cascades crest and east in the Columbia River Gorge in Washington; Washington to California, east to western Idaho and northwestern Nevada.
Habitat: Forest openings, open slopes, and remnant balds at low to middle elevations in the mountains.
Origin: Native
Flowers: May-September
Quill cat's-eye (Cryptantha affinis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forest openings at moderate elevations.
Origin: Native
Flowers: June-July
Weakstem cat's-eye (Cryptantha flaccida)
Distribution: Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; central Washington to southern California, east to Idaho, Nevada, and Utah.
Habitat: Dry, open slopes and flats at lower elevations.
Origin: Native
Flowers: May-June
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
Flowers: June-July
Narrow-leaf cat-tail (Typha angustifolia)
Distribution: Occurring on both sides of the Cascades crest in Washington; widespread in the eastern half of North America; Eurasia.
Habitat: Shallow, quiet to slow-moving water.
Origin: Introduced from Europe and/or eastern North America
Flowers: June-July
Southern cat-tail (Typha domingensis)
Origin: Introduced
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
Flowers: June-August
Conoid catchfly (Silene conoidea)
Origin: Introduced from Europe
Flowers: May - July
Evening catchfly (Silene latifolia)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, pastures, irrigation ditches, forest edge, thickets, wastelots, and other disturbed open areas, often where moist.
Origin: Introduced from Europe
Flowers: May-August
Forked catchfly (Silene dichotoma)
Origin: Introduced from Europe
Flowers: May - July
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
Flowers: May-August
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
Flowers: June - August
Oregon catchfly (Silene oregana)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains of Montana and Wyoming, and to northeastern Nevada.
Habitat: Forest openings and meadows from middle elevation to subalpine.
Origin: Native
Flowers: June-August
Palmer's catchfly (Silene bernardina)
Distribution: Occurring east of the Cascades crest in Yakima County, where disjunct; Lane County, Oregon to California, Nevada, and Mexico, east to western Idaho; disjunct in Yakima County, WA.
Habitat: Grassy slopes to ponderosa pine forest openings at middle elevations.
Origin: Native
Flowers: May-June
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
Flowers: June-August
Sand catchfly (Silene conica)
Origin: Introduced from Eurasia
Flowers: May - July
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
Flowers: May-August
Sweet William catchfly (Atocion armeria)
Distribution: Introduced as an ornmental and occasionally escaping throughout North America.
Habitat: Disturbed soil and wasteland.
Origin: Introduced
Flowers: June - July
Catchweed (Asperugo procumbens)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, fields, irrigation ditches, and other disturbed open areas where moist.
Origin: Introduced from Eurasia
Flowers: May-July
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
Flowers: June-September
Elegant cats-ear (Calochortus elegans)
Distribution: East of the Casades crest in Washington; Washington to Oregon and northern California, east to Idaho and Montana.
Habitat: Grassy hillsides and open coniferous forests, middle to high elvations in the mountains.
Origin: Native
Flowers: May-June
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
Flowers: June-July
Prostrate ceanothus (Ceanothus prostratus)
Distribution: Occurring east of the Cascades crest in south-central Washington; southern Washington to California, east to Idaho and western Nevada.
Habitat: Drier open woods, moderate to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Redstem ceanothus (Ceanothus sanguineus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to western Montana.
Habitat: Moist to dry open forest, slopes, and thickets, from low to middle elevations.
Origin: Native
Flowers: May-July
Alaskan yellow cedar (Callitropsis nootkatensis)
Distribution: Occurring in the Cascades and Olympic Mountains of Washington; Alaska to northern California.
Habitat: Moist areas, generally from moderate to high elevations in the mountains.
Origin: Native
Cones: May-July
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
Cones: Producing cones in April-May
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
Cones: Producing cones in April-May
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
Flowers: April-May
Celery (Apium graveolens)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to California, east to Idaho, Utah, and Nevada, east across the southern U.S. to eastern North America.
Habitat: Disturbed ground, usually where moist, where escaped from nearby cultivation.
Origin: Introduced from Europe
Flowers: June-August
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
Flowers: July - September
Branching centaury (Centaurium pulchellum)
Origin: Introduced
Common 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
Flowers: June-August
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
Flowers: June-July
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
Flowers: June-August
Lesser centaury (Centaurium pulchellum)
Origin: Introduced
Muhlenberg`s centaury (Zeltnera muehlenbergii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Nevada.
Habitat: Forest openings, wet areas at low to middle elevations.
Origin: Native
Flowers: June-August
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
Flowers: June-July
Starry cerastium (Cerastium arvense)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America, except for the south-central and southeastern U.S., to the Atlantic Coast.
Habitat: Open slopes and meadows, from coastal cliffs and balds to inland valleys, rocky hillsides, forest openings, and subalpine meadows.
Origin: Native
Flowers: April-August
Hoary chaenactis (Chaenactis douglasii)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Sagebrush desert flats and slopes, ponderosa pine forest openings, and meadows near the subalpine.
Origin: Native
Flowers: May-September
Chaffweed (Lysimachia minima)
Distribution: Chiefly east of the Cascades in Washington, though also found near the coast; throughout much of North America.
Habitat: Moist ground and vernal pools at low elevations.
Origin: Native
Flowers: May-June
Golden chain-tree (Laburnum anagyroidis)
Distribution: Occurring chiefly west of the Cascades crest at low elevations in Washington; British Columbia to California, east to Utah.
Habitat: Forest edge, wastelots, and other disturbed sites often in proximity to residential development where escaped from cultivation.
Origin: Introduced from Europe
Flowers: May-June
Austrian chamomile (Cota austriaca)
Distribution: Occurring east of the Cascades crest in Washington, where known from the Pullman area; not known from elsewhere in North America.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas.
Origin: Introduced
Flowers: July-August
Corn chamomile (Anthemis arvensis)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains in the U.S, widespread from the midwestern U.S. to eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas generally at low elevations.
Origin: Introduced from Europe
Flowers: June-August
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
Flowers: June-September
Field chamomile (Anthemis arvensis)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains in the U.S, widespread from the midwestern U.S. to eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas generally at low elevations.
Origin: Introduced from Europe
Flowers: June-August
Golden chamomile (Cota tinctoria)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across the central and northern regions of North America to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas.
Origin: Introduced
Flowers: July-September
Mayweed chamomile (Anthemis cotula)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed areas generally at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Stinking chamomile (Anthemis cotula)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed areas generally at low elevations.
Origin: Introduced from Europe
Flowers: May-October
Wild chamomile (Matricaria chamomilla)
Distribution: Widespread across the United States and southern Canada.
Habitat: Roadsides, dry waste sites.
Origin: Introduced
Flowers: Late April - June
Yellow chamomile (Cota tinctoria)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east across the central and northern regions of North America to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and other disturbed, open areas.
Origin: Introduced
Flowers: July-September
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
Flowers: April-June
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)
Flowers: May-June
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
Flowers: May-July
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
Flowers: June-July
Henderson's checker-mallow (Sidalcea hendersonii)
Distribution: Occurring west of the Cascades crest in the coastal counties in Washington; southwestern British Columbia to the Umpqua River area in Oregon.
Habitat: On or adjacent to tidelands, coastal marshes.
Origin: Native
Flowers: June-August
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
Flowers: May-July
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
Flowers: May-July
Oregon checker-mallow (Sidalcea oregana)
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to Wyoming.
Habitat: Sagebrush plains, meadows and ponderosa pine forests.
Origin: Native
Flowers: May-July
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
Flowers: April-June
Cheeseweed (Malva parviflora)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California, east to the Great Plains, also in southeastern and northeastern North America.
Habitat: Roadsides, forest edge, fields, ditches, wastelots, and other disturbed open areas.
Origin: Introduced from Eurpoe
Flowers: March-August
Bitter cherry (Prunus emarginata)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Thickets, rocky slopes, open forests, shorelines, and openings, from the lowlands to subalpine.
Origin: Native
Flowers: April-June
Black cherry (Prunus serotina)
Origin: Introduced
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
Flowers: May
Ground cherry (Physalis heterophylla)
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 eastern North America
Flowers: July - September
Mahaleb cherry (Prunus mahaleb)
Distribution: Introduced species used as budding stock for cherries, sometimes escaping.
Habitat: Disturbed soil.
Origin: Introduced
Flowers: May - June
Nanking cherry (Prunus tomentosa)
Origin: Introduced
Perfumed cherry (Prunus mahaleb)
Distribution: Introduced species used as budding stock for cherries, sometimes escaping.
Habitat: Disturbed soil.
Origin: Introduced
Flowers: May - June
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
Flowers: April-May
Rum cherry (Prunus serotina)
Origin: Introduced
Sour cherry (Prunus cerasus)
Origin: Introduced
Sweet cherry (Prunus avium)
Distribution: Occurring chiefly west of the Cascades crest in Washington, though distributed widely throughout the state; British Columbia to California, east to the Rocky Mountains, also in eastern North America.
Habitat: Forest edges, fields, wastelots, and other disturbed areas.
Origin: Introduced from Eurasia
Flowers: April-May
Yoshino cherry (Prunus yedoensis)
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: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across much of the United States and parts of Canada to the Atlantic Coast.
Habitat: Roadsides, forest edges, wastelots, and other disturbed areas where often seasonally moist.
Origin: Introduced from Eurasia
Flowers: April-July
Rough chervil (Chaerophyllum temulum)
Distribution: Occurring west of the Cascades crest in the lowlands in Washington; southwestern British Columbia to northwestern Oregon, also in eastern North America.
Habitat: Forest edge and understory, shady roadsides, and other disturbed areas where shady and seasonally moist.
Origin: Introduced from Europe
Flowers: April-June
Wild chervil (Anthriscus sylvestris)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho, also in eastern North America and Greenland.
Habitat: Roadsides, fields, forest edge, wastelots, and other disturbed areas where seasonally moist.
Origin: Introduced from Eurasia
Flowers: May-August
Soft chess (Bromus hordeaceus)
Distribution: Common introduction from Alaska south to Baja California, east to Idaho and Montana.
Habitat: Waste ground, roadsides, dry hillsides.
Origin: Introduced
Flowers: May - July
European chestnut (Castanea sativa)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; also occurring in scattered states in eastern North America.
Habitat: Disturbed forest, thickets, and forest openings at low elevations, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: April-June
Spanish chestnut (Castanea sativa)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; also occurring in scattered states in eastern North America.
Habitat: Disturbed forest, thickets, and forest openings at low elevations, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: April-June
Sweet chestnut (Castanea sativa)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; also occurring in scattered states in eastern North America.
Habitat: Disturbed forest, thickets, and forest openings at low elevations, where escaping from cultivation.
Origin: Introduced from Europe
Flowers: April-June
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
Flowers: June-July
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
Flowers: July-August
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
Flowers: February-October
Dry chickweed (Cerastium dichotomum)
Distribution: Washington to California.
Habitat: Disturbed areas, especially along roadsides.
Origin: Introduced from southern Europe
Flowers: April-June
Dwarf chickweed (Cerastium pumilum)
Distribution: Introduced at scattered locations in Washngton.
Habitat: Dry, sandy or gravelly places, roadsides.
Origin: Introduced from Europe
Flowers: April - May
Field chickweed (Cerastium arvense)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America, except for the south-central and southeastern U.S., to the Atlantic Coast.
Habitat: Open slopes and meadows, from coastal cliffs and balds to inland valleys, rocky hillsides, forest openings, and subalpine meadows.
Origin: Native
Flowers: April-August
Giant chickweed (Myosoton aquaticum)
Distribution: In Washington known only from the southeast corner; British Columbia to Oregon, east to Idaho and Montana; also in central and eastern North America.
Habitat: Stream banks, woods, marshes and wet meadows.
Origin: Introduced from Europe
Flowers: June-October
Gray chickweed (Cerastium brachypetalum)
Origin: Introduced
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)
Distribution: Occurring east of the Cascades crest in central Washington, where disjunct; southeastern Oregon to southern Idaho and southwestern Montana; disjunct in central Washington.
Habitat: Grassy or disturbed areas, often where seasonally wet.
Origin: Native
Flowers: April-June
Upright chickweed (Moenchia erecta)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California, also in scattered locations in other parts of the central and southern U.S.
Habitat: Open, disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: April-May
Water chickweed (Montia fontana)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho, eastward across northern Canada to eastern North America.
Habitat: Wet places, including meadows, fields, lawns, and vernally moist sites, sometimes aquatic and floating, low to moderate elevations.
Origin: Native
Flowers: March-June
Water chickweed (Myosoton aquaticum)
Distribution: In Washington known only from the southeast corner; British Columbia to Oregon, east to Idaho and Montana; also in central and eastern North America.
Habitat: Stream banks, woods, marshes and wet meadows.
Origin: Introduced from Europe
Flowers: June-October
Chicory (Cichorium intybus)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas at low to middle elevations.
Origin: Introduced from Europe
Flowers: July-October
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
Flowers: May-July
Giant chinquapin (Chrysolepis chrysophylla)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Mason County, Washington to California.
Habitat: Dry, open to wooded areas, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Golden chinquapin (Chrysolepis chrysophylla)
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; Mason County, Washington to California.
Habitat: Dry, open to wooded areas, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: April-June
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: Both native and introduced populations
Flowers: April - August
Wild chives (Allium vineale)
Distribution: Scattered localities throughout Washington.
Habitat: Disturbed areas.
Origin: Introduced from Europe
Flowers: June - August
Black chokeberry (Aronia melanocarpa)
Origin: Introduced
Common chokecherry (Prunus virginiana)
Distribution: Alaska, Canada and much of the United States
Habitat: Foothills and lowlands, more common in drier areas
Origin: Native
Flowers: May - Early July
Western chokecherry (Prunus virginiana)
Distribution: Alaska, Canada and much of the United States
Habitat: Foothills and lowlands, more common in drier areas
Origin: Native
Flowers: May - Early July
White chokecherry (Prunus virginiana)
Distribution: Alaska, Canada and much of the United States
Habitat: Foothills and lowlands, more common in drier areas
Origin: Native
Flowers: May - Early July
Chucklusa (Lomatium canbyi)
Distribution: Occurring east of the Cascades crest in Washington chiefly in the Columbia River Basin. central Washington to northeastern Nevada, east to southwestern Idaho.
Habitat: Scablands and sagebrush steppe in rather deep soil.
Origin: Native
Flowers: March-April
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
Flowers: May-August
Blueleaf cinquefoil (Potentilla glaucophylla)
Distribution: Occurring in the mountains on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist subalpine and alpine meadows, and along stream banks in high mountain forests.
Origin: Native
Flowers: June-August
Brewer's cinquefoil (Potentilla breweri)
Distribution: Occurring east of the Cascades crest from central Washington south; central Washington to California, east to Nevada.
Habitat: Moist meadows and stream banks to open slopes, mid- to high elevations.
Origin: Native
Flowers: June-August
Brook cinquefoil (Potentilla rivalis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to central North America, and further east to the northeastern U.S.
Habitat: Damp soil, especially along rivers and around lakes, ponds, and swamps at low elevations.
Origin: Native
Flowers: May-September
Bushy cinquefoil (Potentilla supina)
Distribution: In scattered locations in Washington, mostly east of the Cascades; British Columbia south to Texas, east to northeastern U.S.
Habitat: Sandy stream banks, lake shores, and moist flats.
Origin: Native
Flowers: June-July
Different-leaved cinquefoil (Potentilla glaucophylla)
Distribution: Occurring in the mountains on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist subalpine and alpine meadows, and along stream banks in high mountain forests.
Origin: Native
Flowers: June-August
Diverse-leaved cinquefoil (Potentilla glaucophylla)
Distribution: Occurring in the mountains on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist subalpine and alpine meadows, and along stream banks in high mountain forests.
Origin: Native
Flowers: June-August
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
Flowers: July - August
English cinquefoil (Potentilla anglica)
Origin: Introduced
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
Flowers: June-August
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
Flowers: June-August
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
Flowers: June - July
Jepson's cinquefoil (Potentilla jepsonii)
Origin: Native
Marsh cinquefoil (Comarum palustre)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across the northern portion of North America to the Atlantic Coast.
Habitat: Bogs, wet meadows and lake margins, sea level to subalpine.
Origin: Native
Flowers: June-August
Newberry's cinquefoil (Potentilla newberryi)
Distribution: Known historically (1898) from the Columbia River Gorge in Washington, now likely extirpated; central Oregon to California, east to northwestern Nevada.
Origin: Native
Flowers: April-May
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
Flowers: July-September
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
Flowers: May-August
Pennsylvania cinquefoil (Potentilla pensylvanica)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains, and further east across the northern U.S. and Canada to the Atlantic Coast; also in Eurasia.
Habitat: Damp alpine meadows, rocky slopes, ridges, and talus.
Origin: Native
Flowers: June-August
River cinquefoil (Potentilla rivalis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to central North America, and further east to the northeastern U.S.
Habitat: Damp soil, especially along rivers and around lakes, ponds, and swamps at low elevations.
Origin: Native
Flowers: May-September
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
Flowers: May-August
Shrubby cinquefoil (Dasiphora fruticosa)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Open areas from low elevations to alpine slopes.
Origin: Native
Flowers: May-August
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
Flowers: June - July
Silverweed cinquefoil (Potentilla anserina)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Distributed widely across much of North America except south-central and southeastern U.S.
Habitat: Wet, alkaline areas from coast to arid inlands.
Origin: Native
Flowers: April-August
Snow cinquefoil (Potentilla nivea)
Distribution: Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, east to the southern Rocky Mountains to Colorado, further east to eastern North America.
Habitat: Arctic tundra and gravel bars to alpine slopes and meadows.
Origin: Native
Flowers: June August
Sticky cinquefoil (Drymocallis glandulosa)
Distribution: In Washington from the coast to mid elevations in the mountains; south to California and east to Montana.
Habitat: Open, mesic areas from coastal meadows to forest openings.
Origin: Native
Flowers: June-August
Subarctic cinquefoil (Potentilla hyparctica)
Distribution: Known only from west of the Cascades crest in Whatcom County in Washington; Alaska to Washington, also south to south-central Montana and Wyoming; circumboreal.
Habitat: Alpine rocky slopes, talus, heath, turf, and snowmelt meadows, often acidic.
Origin: Native
Flowers: June-August
Sulphur cinquefoil (Potentilla recta)
Distribution: Widely distributed throughout Washington; widely distributed throughout most of North America.
Habitat: Roadsides, trails, disturbed ground.
Origin: Introduced
Flowers: June-July
Vari-leaved cinquefoil (Potentilla glaucophylla)
Distribution: Occurring in the mountains on both sides of the Cascades crest and in the Olympic Mountains in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist subalpine and alpine meadows, and along stream banks in high mountain forests.
Origin: Native
Flowers: June-August
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
Flowers: July-September
Wood cinquefoil (Potentilla anglica)
Origin: Introduced
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
Flowers: May-July
Twiggy clarkia (Clarkia viminea)
Distribution: Known historically (1893) from west of the Cascades crest in Clark County of southwestern Washington; southwestern Washington to California.
Habitat: Grassy or rocky slopes and flats.
Origin: Native
Yellow clarkia (Clarkia amoena)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia south to California.
Habitat: Dry, open to wooded areas, at low elevations.
Origin: Native
Flowers: May-July
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
Flowers: June-August
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
Flowers: June-August
Lake Washington claytonia (Claytonia washingtoniana)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon.
Habitat: Coastal bluffs and coniferous forests at low elevations, typically where moist.
Origin: Native
Flowers: January-June
Pale claytonia (Claytonia exigua)
Distribution: Southern B.C. to California, east to eastern Washington and Oregon, part of Nevada.
Habitat: Open areas on rock, clayey soils, or sand.
Origin: Native
Flowers: March - July
Sand claytonia (Claytonia arenicola)
Distribution: Occurring east of the Cascades crest along the eastern border of Washington and in the Columbia River Gorge; Washington to Oregon, east to Idaho and western Montana.
Habitat: Mossy and rocky places, from sagebrush desert to ponderosa pine forest openings.
Origin: Native
Flowers: March-June
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
Flowers: June-August
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
Flowers: April-June
Columbia clematis (Clematis occidentalis)
Distribution: East of the Cascades in Washington; British Columbia south to Oregon, east to Saskatchewan and Wyoming.
Habitat: Often in deep, fine soils in shady forest, also in cliffs and other rocky sites in open woods and thickets, at moderate to high elevations in the mountains.
Origin: Native
Flowers: May-July
Douglas's clematis (Clematis hirsutissima)
Distribution: Occurring in only a few counties in central and eastern Washington; Washington south to Oregon, east to Montana, south to Arizona and New Mexico.
Habitat: Meadows, grasslands, and forest openings.
Origin: Native
Flowers: May-June
Evergreen clematis (Clematis vitalba)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to Oregon, also in scattered locations in eastern North America.
Habitat: Forest edge, hillsides, parks, wastelots, and other disturbed sites.
Origin: Introduced; native to Europe and Africa
Flowers: June-September
Oriental clematis (Clematis orientalis)
Distribution: Known from Yakima County in Washington; also known from the Columbia River Gorge area in Oregon, and other scattered locations in southwestern North America.
Habitat: Disturbed open areas at low elevations.
Origin: Introduced
Flowers: June-July
Rock clematis (Clematis occidentalis)
Distribution: East of the Cascades in Washington; British Columbia south to Oregon, east to Saskatchewan and Wyoming.
Habitat: Often in deep, fine soils in shady forest, also in cliffs and other rocky sites in open woods and thickets, at moderate to high elevations in the mountains.
Origin: Native
Flowers: May-July
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
Flowers: June-September
Gastony's cliff-brake (Pellaea gastonyi)
Origin: Native
Smooth cliff-brake (Pellaea glabella)
Origin: Native
Cliff-fern (Woodsia scopulina)
Distribution: Alaska to California, chiefly east of the Cascade summits in Washington and Oregon
Habitat: Rock crevices, ledges and talus slopes in the mountains, and in less arid parts of the lowlands.
Origin: Native
Oregon cliff-fern (Woodsia oregana)
Distribution: Alaska to California, chiefly east of the Cascade summits in Washington and Oregon
Habitat: Rock crevices, ledges and talus slopes in the mountains, and in less arid parts of the lowlands.
Origin: Native
Brewer's cliffbrake (Pellaea breweri)
Distribution: In the Cascades and Olympic Mountains in WA; southern British Columbia to California, east to western Montana, Utah, and Colorado.
Habitat: Talus slopes, cliff crevices and other rocky places, foothills to timberline.
Origin: Native
Spores: June-September
Sierran cliffbrake (Pellaea brachyptera)
Habitat: Dry, rocky slopes from lowlands to montane.
Origin: Native
Spores: May-July
Spiny clotbur (Xanthium spinosum)
Origin: Introduced from South America (although treated as native in CA by Jeps. Man.)
Flowers: July - October
Cloudberry (Rubus chamaemorus)
Origin: Native
Alsike clover (Trifolium hybridum)
Distribution: Occurring on both sides of the Cascades crest throughout much of Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: April-September
Arrow-leaf clover (Trifolium vesiculosum)
Distribution: Occurring in a few locations west of the Cascades crest in lowland western Washington; Washington to California; also in the south-central and southeastern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: May-July
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
Flowers: April-June
Bowl clover (Trifolium cyathiferum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to western Montana and Nevada.
Habitat: Wet meadows and seeps to fairly dry, sandy soil, at moderate elevations.
Origin: Native
Flowers: May-July
Branched clover (Trifolium dichotomum)
Distribution: Occurring west of the Cascades crest in the San Juan Islands in Washington; southern Vancouver Island, Gulf Islands, and San Juan Islands, otherwise Willamette Valley, Oregon to California.
Habitat: Open forest, sandy embankments, and grassy balds on islands.
Origin: Native
Flowers: April-June
Burrowing clover (Trifolium subterraneum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in the southeastern U.S.
Habitat: Pastures, prairies, roadsides, lawns, fields, and other open disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: April-June
Clustered clover (Trifolium glomeratum)
Distribution: Occurring west of the Cascades crest in the Puget Trough lowlands; southwestern British Columbia to California.
Habitat: Roadsides, lawns, and other disturbed sites often with dry, gravelly, compacted soil.
Origin: Introduced from Europe
Flowers: April-June
Cow clover (Trifolium wormskioldii)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho, Colorado, and New Mexico.
Habitat: Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains.
Origin: Native
Flowers: May-September
Crimson clover (Trifolium incarnatum)
Distribution: Occurring west of the Cascades crest in the Puget Trough lowlands; British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, wastelots, and other disturbed open areas.
Origin: Introduced from Europe
Flowers: April-June
Cup clover (Trifolium cyathiferum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to western Montana and Nevada.
Habitat: Wet meadows and seeps to fairly dry, sandy soil, at moderate elevations.
Origin: Native
Flowers: May-July
Douglas's clover (Trifolium douglasii)
Distribution: Occurring east of the Cascades crest in eastern and southeastern Washington; eastern Washington to east-central Oregon, east to eastern Idaho.
Habitat: Moist to wet areas in including open meadows, forested wetlands, and streambanks.
Origin: Native
Flowers: June-July
Dutch clover (Trifolium repens)
Distribution: Widely distributed throughout Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, lawns, meadows, wastelots, trailsides, and other disturbed open areas from low elevations to the subalpine.
Origin: Introduced from Europe
Flowers: April-September
Few-flowered clover (Trifolium oliganthum)
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California.
Habitat: Balds, grasslands, and prairies at low elevations, often where dry and rocky.
Origin: Native
Flowers: April-June
Field clover (Trifolium campestre)
Distribution: Occurring chiefly west of the Cascades in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Wastelots, roadsides, fields, meadows, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-August
Foothill clover (Trifolium ciliolatum)
Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to California.
Habitat: Wet meadows to rather dry, sandy soil.
Origin: Native
Flowers: April-June
Golden clover (Trifolium aureum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, fields, lawns, railways, wastelots, and other disturbed open sites.
Origin: Introduced
Flowers: June-September
Greater hop clover (Trifolium aureum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, fields, lawns, railways, wastelots, and other disturbed open sites.
Origin: Introduced
Flowers: June-September
Hop clover (Medicago lupulina)
Distribution: Widely distributed throughout Washington; widely distributed throughout much of North America.
Habitat: Roadsides, fields, lawns, wastelots, and other disturbed areas, often on sandy or gravelly soil.
Origin: Introduced from Eurasia
Flowers: April-August
Hop clover (Trifolium campestre)
Distribution: Occurring chiefly west of the Cascades in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Wastelots, roadsides, fields, meadows, and other disturbed areas.
Origin: Introduced from Europe
Flowers: May-August
Knotted clover (Trifolium striatum)
Distribution: Occurring in lowlands west of the Cascades crest in Washington; Washington to California, also in eastern North America.
Habitat: Disturbed, open areas at low elevation.
Origin: Introduced from Europe
Flowers: April-June
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
Flowers: April-June
Least hop clover (Trifolium dubium)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America to the Atlantic Coast.
Habitat: Forest openings, roadsides, fields, lawns, wastelots, and other disturbed sites.
Origin: Introduced from Europe
Flowers: April-September
Long-stalked clover (Trifolium longipes)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Meadows and valleys, lower mountains to subalpine slopes.
Origin: Native
Flowers: May-August
Nodding clover (Trifolium cernuum)
Distribution: Known from the Olympic Peninsula in Washington; Washington to California.
Habitat: Roadsides, lawns, fields, and other disturbed open areas at low elevations.
Origin: Introduced
Flowers: April-May
Notch-leaf clover (Trifolium bifidum)
Distribution: Occurring in Klickitat County in Washington; south-central Washington to California.
Habitat: Open woodlands and grassy slopes.
Origin: Native
Flowers: April-June
Pinole clover (Trifolium bifidum)
Distribution: Occurring in Klickitat County in Washington; south-central Washington to California.
Habitat: Open woodlands and grassy slopes.
Origin: Native
Flowers: April-June
Plumed clover (Trifolium plumosum)
Distribution: Occurring in the southeastern region in Washington; southeastern Washington to northeastern Oregon, east to adjacent Idaho.
Habitat: Dry hillsides, meadowlands, and forest openings.
Origin: Native
Flowers: May-August
Poverty clover (Trifolium depauperatum)
Distribution: Occurring west of the Cascades crest in northwestern Washington; also in Gulf Islands and Vancouver Islands in British Columbia, otherwise southwestern Oregon to southern California.
Habitat: Coastal bluffs and vernally moist areas.
Origin: Native
Flowers: April-June
Rabbitfoot clover (Trifolium arvense)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana, further eastward across the northern U.S. and southern Great Plains and Canada to eastern North America.
Habitat: Roadsides, fields, wastelots, and other disturbed open areas.
Origin: Introduced
Flowers: May-July
Rancheria clover (Trifolium albopurpureum)
Distribution: Known from only a few scattered locations in Klickitat County in Washington; south-central Washington to California, east to Arizona.
Habitat: Cliffs, balds, and forest openings at low to moderate elevations.
Origin: Native
Flowers: May-June
Red clover (Trifolium pratense)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Escaped from cultivation; found along mountain trails where horses have been used
Origin: Introduced from Europe
Flowers: June-August
Reversed clover (Trifolium resupinatum)
Distribution: Occurring east of the Cascades crest in eastern Washington; eastern Washington to California, also in eastern North America.
Habitat: Roadsides, wastelots, and disturbed open areas.
Origin: Introduced from Eurasia
Flowers: May-June
Rose clover (Trifolium hirtum)
Distribution: Occurring in the Columbia River Gorge in Washington; Washington to California, also in the southeastern U.S.
Habitat: Roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Salt marsh clover (Trifolium wormskioldii)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho, Colorado, and New Mexico.
Habitat: Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains.
Origin: Native
Flowers: May-September
Sand clover (Trifolium willdenovii)
Distribution: Occurring west of the Cascades crest and east along the Columbia River in Washington; British Columbia to California.
Habitat: Grassy hillsides, balds, prairies, and meadows at low to moderate elevations.
Origin: Native
Flowers: April-July
Slender clover (Trifolium gracilentum)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California, where native, and east to Arizona.
Habitat: Grassy slopes, fields, and roadsides.
Origin: Introduced from California
Flowers: April-June
Small-head clover (Trifolium microcephalum)
Distribution: Distributed widely throughout Washington; British Columbia to Baja California, east to the Rocky Mountains.
Habitat: Moist meadows, sandy riverbanks and drier hillsides, coastal to mid-elevations in the mountains.
Origin: Native
Flowers: April-June
Strawberry clover (Trifolium fragiferum)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, fields, lawns, wastelots and other disturbed places.
Origin: Introduced from Europe
Flowers: April-July
Subterranean clover (Trifolium subterraneum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in the southeastern U.S.
Habitat: Pastures, prairies, roadsides, lawns, fields, and other open disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: April-June
Suckling clover (Trifolium dubium)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America to the Atlantic Coast.
Habitat: Forest openings, roadsides, fields, lawns, wastelots, and other disturbed sites.
Origin: Introduced from Europe
Flowers: April-September
Suffocated clover (Trifolium suffocatum)
Distribution: Occurring west of the Cascades crest in Washington; Washington and in California
Habitat: Roadsides, fields, wastelots, lawns, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Teasel clover (Trifolium retusum)
Distribution: Occurring west of the Cascades crest in the Puget Trough region in Washington; also occurring in southern Oregon and northern California.
Habitat: Roadsides, fields, meadows, lawns, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from Europe
Flowers: April-June
Thimble clover (Trifolium microdon)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California; also in South America.
Habitat: In meadows or on rocky or sandy soil at low elevations.
Origin: Native
Flowers: April-June
Thompson's clover (Trifolium thompsonii)
Distribution: Endemic to Chelan and Douglas counties in Washington.
Habitat: Common on dry, grassy hillsides just below the ponderosa pine woodlands.
Origin: Native
Flowers: May-June
Tomcat clover (Trifolium willdenovii)
Distribution: Occurring west of the Cascades crest and east along the Columbia River in Washington; British Columbia to California.
Habitat: Grassy hillsides, balds, prairies, and meadows at low to moderate elevations.
Origin: Native
Flowers: April-July
Tree clover (Trifolium ciliolatum)
Distribution: Occurring east of the Cascades crest in south-central Washington; south-central Washington to California.
Habitat: Wet meadows to rather dry, sandy soil.
Origin: Native
Flowers: April-June
Twin clover (Trifolium latifolium)
Distribution: Occurring east of the Cascades crest in far eastern and southeastern Washington; eastern Washington to northeastern Oregon, east to western Montana.
Habitat: Moist meadows to rocky ridges.
Origin: Native
Flowers: June-August
Valparaiso clover (Trifolium microdon)
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California; also in South America.
Habitat: In meadows or on rocky or sandy soil at low elevations.
Origin: Native
Flowers: April-June
White clover (Trifolium repens)
Distribution: Widely distributed throughout Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, lawns, meadows, wastelots, trailsides, and other disturbed open areas from low elevations to the subalpine.
Origin: Introduced from Europe
Flowers: April-September
White-tip clover (Trifolium variegatum)
Distribution: Widely distributed throughout much of Washington; Alaska south to California, east to Montana, Wyoming, Utah, and Arizona.
Habitat: Dry, sandy soil to moist meadows.
Origin: Native
Flowers: April-July
Woolly-head clover (Trifolium eriocephalum)
Distribution: Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California, east to Montana, Utah, and Nevada.
Habitat: Meadows and forest openings at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Yellow clover (Trifolium aureum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming; also occurring in most of eastern North America.
Habitat: Roadsides, fields, lawns, railways, wastelots, and other disturbed open sites.
Origin: Introduced
Flowers: June-September
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
Spores: Spores produced April-October
Devil's club (Oplopanax horridus)
Distribution: Widely distributed throughout the forested areas on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Alberta and Montana, also in the Great Lakes region.
Habitat: Moist woods at mid-elevations, especially along streams.
Origin: Native
Flowers: May-July
Triangular club-rush (Schoenoplectus triqueter)
Distribution: Occurring west of the Cascades crest in Washington in the lower Columbia River; southwestern Washington to adjacent northwestern Oregon.
Habitat: Freshwater intertidal zone.
Origin: Introduced from Eurasia
Flowers: July-September
Alaskan clubmoss (Diphasiastrum 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: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana, also in central and eastern North America; circumboreal
Habitat: Moist coniferous woods and swamps.
Origin: Native
Spores: Produces spores April-October
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)
Distribution: Occurring west of the Cascades crest in Washington; Alaska to northwest Oregon, east to Idaho and western Montana; also in eastern Asia.
Habitat: Moist, brushy talus slopes, edges of coniferous forests, or mossy rocks, from middle elevations to the subalpine.
Origin: Native
Hybrid clubmoss (Diphasiastrum alpinum × Diphasiastrum 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 (Spinulum 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
One-cone clubmoss (Lycopodium lagopus)
Distribution: Occurring in the North Cascades in Washington; Alaska to northern Washington, western Montana, the Great Lakes region, and northeastern North America.
Habitat: Moist, open areas, montane to subalpine.
Origin: Native
Prickly tree clubmoss (Dendrolycopodium 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)
Distribution: Occurring in the North Cascades in Washington; Alaska to northern Washington, western Montana, the Great Lakes region, and northeastern North America.
Habitat: Moist, open areas, montane to subalpine.
Origin: Native
Sitka clubmoss (Diphasiastrum 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 (Spinulum 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
Flowers: May-August
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
Flowers: June - August
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
Flowers: June - August
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
Flowers: July - August
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
Flowers: July - August
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
Flowers: July - August
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
Flowers: June - August
Cock's-head (Astragalus agrestis)
Distribution: Occurring east of the Cascades crest in Washington; Yukon Territory to California, east across North America to Canada\'s Atlantic Coast.
Habitat: Moist spots in sagebrush plains, and mountain meadows to alpine slopes.
Origin: Native
Flowers: June-August
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
Flowers: April-October
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
Flowers: April-October
Spiny cockleburr (Xanthium spinosum)
Origin: Introduced from South America (although treated as native in CA by Jeps. Man.)
Flowers: July - October
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
Flowers: June-August
Coldenia (Tiquilia nuttallii)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Utah.
Habitat: Sagebrush plains.
Origin: Native
Flowers: May-August
Collinsia (Collinsia parviflora)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California and Colorado, east to Ontario and Michigan.
Habitat: Lowlands to alpine meadows in vernally (springtime) moist areas.
Origin: Native
Flowers: March-July
Few-flowered collinsia (Collinsia sparsiflora)
Distribution: Chiefly along the Columbia River Gorge in Washington; Washington south to northern Oregon, east to western Idaho.
Habitat: Open slopes and swales.
Origin: Native
Flowers: March-April
Rattan collinsia (Collinsia rattanii)
Distribution: Occurring east of the Cascades crest in Washington along the Columbia River Gorge; Washington south to the John Day valley in Oregon.
Habitat: Open woods at low elevations.
Origin: Native
Flowers: April-June
Alpine collomia (Collomia debilis)
Distribution: Occurring in the Olympic and Cascade Mountains of Washington; Washington south to Oregon, east to Idaho.
Habitat: Shifting talus slopes at high elevations in the mountains.
Origin: Native
Flowers: June-August
Bristle-flowered collomia (Collomia macrocalyx)
Distribution: Occurring east of the Cascades crest in Kittitas and Yakima counties in Washington; central Washington and also in north-central Oregon.
Habitat: Sagebrush desert.
Origin: Native
Flowers: May-June
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
Flowers: June-July
Large-flowered collomia (Collomia grandiflora)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming, and Colorado.
Habitat: Dry, open to lightly wooded areas, lowlands to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Larsen's alpine collomia (Collomia larsenii)
Distribution: Occurring in the Olympic and Cascade Mountains in Washington; Washington to California.
Habitat: Rocky, often moist slopes at high elevations in the mountains.
Origin: Native
Flowers: June-August
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
Flowers: May-August
Talus collomia (Collomia larsenii)
Distribution: Occurring in the Olympic and Cascade Mountains in Washington; Washington to California.
Habitat: Rocky, often moist slopes at high elevations in the mountains.
Origin: Native
Flowers: June-August
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
Flowers: June-August
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
Flowers: June-August
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
Flowers: March-May
Japanese coltsfoot (Petasites japonicus)
Distribution: Sparingly introduced in Washington
Habitat: Escaped from cultivation
Origin: Introduced
Sweet coltsfoot (Petasites frigidus)
Distribution: Occurring in forested and mountainous areas throughout Washington; Alaska to California, east across the northern half of North America to the Atlantic Coast; circumboreal.
Habitat: Meadows, swamps, and other wet places, from low elevations to the alpine.
Origin: Native
Flowers: March-August
European Columbine (Aquilegia vulgaris)
Distribution: Introduced as a garden flower, occasionally escaping.
Habitat: Disturbed soil near gardens.
Origin: Introduced
Flowers: May-July
Red columbine (Aquilegia formosa)
Distribution: Widely distributed on both sides of the Cascades crest throughout Washington; Alaska to California, coastal and inland to Alberta and Wyoming.
Habitat: Open woods, from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: May-August
Sitka columbine (Aquilegia formosa)
Distribution: Widely distributed on both sides of the Cascades crest throughout Washington; Alaska to California, coastal and inland to Alberta and Wyoming.
Habitat: Open woods, from the lowlands to moderate elevations in the mountains.
Origin: Native
Flowers: May-August
Yellow columbine (Aquilegia flavescens)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to the Rocky Mountains.
Habitat: Moist mountain meadows and talus to alpine slopes
Origin: Native
Flowers: June-August
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
Flowers: April-May
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
Flowers: May-June
Shortleaf combseed (Pectocarya penicillata)
Distribution: Occurring east of the Cascades crest in Washington; 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
Flowers: April-June
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
Flowers: June-August
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
Flowers: May-August
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
Flowers: May - July
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
Flowers: May - July
Green-headed coneflower (Rudbeckia laciniata)
Distribution: Montana and southern Idaho, east to Quebec, then south to Florida.
Habitat: Streambanks and other moist places.
Origin: Introduced from farther east in United States
Flowers: July - September
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
Flowers: June-August
Showy coneflower (Rudbeckia alpicola)
Distribution: Endemic to the Wenatchee Mountains east of the Cascades crest in Washington.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
Tall coneflower (Rudbeckia laciniata)
Distribution: Montana and southern Idaho, east to Quebec, then south to Florida.
Habitat: Streambanks and other moist places.
Origin: Introduced from farther east in United States
Flowers: July - September
Washington showy coneflower (Rudbeckia alpicola)
Distribution: Endemic to the Wenatchee Mountains east of the Cascades crest in Washington.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
Wenatchee Mountain showy coneflower (Rudbeckia alpicola)
Distribution: Endemic to the Wenatchee Mountains east of the Cascades crest in Washington.
Habitat: Thickets, bogs, and along streams in the mountains.
Origin: Native
Flowers: June-August
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
Flowers: June-August
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
Flowers: June-August
South American conyza (Conyza bonariensis)
Distribution: Occurring west of the Cascades crest in lowland western Washington; Washington to California, eastward in the southern U.S. to the Atlantic Coast.
Habitat: Roadsides, fields, wastelots, and disturbed open areas at low elevations.
Origin: Introduced from South America
Flowers: June-August
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
Flowers: May-June
Oregon coolwort (Sullivantia oregana)
Distribution: Columbia River Gorge and lower Willamatte Valley, Oregon.
Habitat: On moist cliffs, especially near waterfalls.
Origin: Native
Flowers: Late May - August
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
Flowers: June - September
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
Flowers: June-July
Red coraldrops (Veronica rubra)
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho and Montana.
Habitat: Open slopes and dry meadows in the lowlands and foothills.
Origin: Native
Flowers: April-May
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
Flowers: June-August
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
Flowers: June-August
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
Flowers: May-August
Spotted coralroot (Corallorhiza maculata)
Distribution: Widely distributed throughout Washington; British Columbia east to Newfoundland, south to California and North Carolina.
Habitat: Moist to rather dry woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-August
Striped coralroot (Corallorhiza striata)
Distribution: Occurring on both sides of the Cascades in Washington; British Columbia south to California, east across the northern half of North America to the Atlantic coast.
Habitat: Moist humus in shady coniferous and deciduous forests, low to mid-elevations.
Origin: Native
Flowers: April-August
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
Flowers: May-August
Alkali cordgrass (Spartina gracilis)
Origin: Native
Flowers: June - July
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
Flowers: June - July
Prairie cordgrass (Spartina pectinata)
Distribution: Eastern Washington and Oregon, east to Newfoundland and North Carolina.
Habitat: Ditches, ponds, and fresh-water marshes.
Origin: Native
Flowers: June - July
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
Flowers: August - September
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
Flowers: August - September
Townsend's cordgrass (Spartina ×townsendii)
Origin: Introduced from Europe
Columbia coreopsis (Coreopsis tinctoria)
Distribution: Occurring chiefly east of the Cascades crest and along the lower Columbia River in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Open and disturbed areas at low to mid elevations where seasonally moist.
Origin: Native
Flowers: June-August
Corn (Zea mays)
Origin: Introduced
Sand corn (Toxicoscordion paniculatum)
Distribution: Occurring east of the Cascades crest in Washington; north-central Washington to California, east to the Rocky Mountains.
Habitat: Grassy slopes, sagebrush desert, and ponderosa or lodgepole pine forest openings.
Origin: Native
Flowers: April-July
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
Flowers: June-July
Garden cornflower (Centaurea cyanus)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, meadows, wastelots, and other disturbed open areas at low elevations.
Origin: Introduced from the Mediterranean region
Flowers: May-October
Mountain cornflower (Centaurea montana)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, Idaho, and Utah, also from Great Lakes region to northeastern North America.
Habitat: Roadsides, fields, ditches, shores, wastelots, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: May-August
Golden corydalis (Corydalis aurea)
Distribution: Occurring chiefly east of the Cascades in Washington; widely distributed throughout much of North America except southeastern U.S.
Habitat: In varied habitats, from moist to dry and well-drained soil.
Origin: Native
Flowers: May-August
Marsh corydalis (Corydalis aquae-gelidae)
Distribution: In the Cascades in Clackamas and Multnomah Counties, Oregon
Habitat: Wet places of shaded forests.
Origin: Native
Flowers: June - August
Yellow corydalis (Corydalis lutea)
Origin: Introduced
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
Flowers: August - September
Bearberry cotoneaster (Cotoneaster dammeri)
Origin: Introduced from China
Bullate cotoneaster (Cotoneaster rehderi)
Distribution: Occurring west of the Cascades crest in lowland western Washington; Alaska to Washington.
Habitat: Thickets, open clearings, forests, and shores typically at low elevations.
Origin: Introduced from China
Flowers: May-Jun; fruiting Sep-Dec.
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
Flowers: May-June
Gamble's cotoneaster (Cotoneaster gamblei)
Origin: Introduced
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
Flowers: May-July
Maire's cotoneaster (Cotoneaster mairei)
Origin: Introduced
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
Flowers: May-July
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
Flowers: May-June
Puckered-leaf cotoneaster (Cotoneaster rehderi)
Distribution: Occurring west of the Cascades crest in lowland western Washington; Alaska to Washington.
Habitat: Thickets, open clearings, forests, and shores typically at low elevations.
Origin: Introduced from China
Flowers: May-Jun; fruiting Sep-Dec.
Purple-flowering cotoneaster (Cotoneaster atropurpureus)
Origin: Introduced
Rock cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Flowers: May-June
Rockspray cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Flowers: May-June
Shiny cotoneaster (Cotoneaster lucidus)
Origin: Introduced from Siberia and Mongolia
Simon's cotoneaster (Cotoneaster simonsii)
Origin: Introduced from the Himalayas
Spreading cotoneaster (Cotoneaster divaricatus)
Origin: Introduced from China
Stern's cotoneaster (Cotoneaster sternianus)
Origin: Introduced
Taiping cotoneaster (Cotoneaster villosulus)
Origin: Introduced
Tengyueh cotoneaster (Cotoneaster tengyuehensis)
Origin: Introduced from China
Truncate-leaved cotoneaster (Cotoneaster mairei)
Origin: Introduced
Wall cotoneaster (Cotoneaster horizontalis)
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Oregon; also in Ontario, Canada.
Habitat: Fields, forest openings, and disturbed areas typically at low elevations.
Origin: Introduced from China
Flowers: May-June
Willow-leaved cotoneaster (Cotoneaster salicifolius)
Origin: Introduced from China
Cotton (Gossypium hirsutum)
Origin: Introduced
Chamisso's cotton-grass (Eriophorum chamissonis)
Distribution: Occurring west of the Cascades crest and in the northeastern corner of Washington; Alaska to Oregon, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Habitat: Swamps and other wet places from along the coast to middle elevations in the mountains.
Origin: Native
Flowers: May-August
Many-spiked cotton-grass (Eriophorum angustifolium)
Distribution: Circumboreal at high latitudes, extending south into Oregon, Colorado and New York.
Habitat: Cold swamps and bogs at moderate to high elevations in the mountains.
Origin: Native
Flowers: July - August
Russet cottongrass (Eriophorum chamissonis)
Distribution: Occurring west of the Cascades crest and in the northeastern corner of Washington; Alaska to Oregon, east to the Rocky Mountains, northern Great Plains, and Great Lakes region.
Habitat: Swamps and other wet places from along the coast to middle elevations in the mountains.
Origin: Native
Flowers: May-August
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
Flowers: May - August
Tassel cottongrass (Eriophorum viridicarinatum)
Origin: Native
Flowers: June - July
Tawny cottongrass (Eriophorum virginicum)
Origin: Introduced
Field cottonrose (Filago arvensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.
Habitat: Dry, open waste land and overgrazed ranges.
Origin: Introduced
Flowers: July-September
Little cottonrose (Logfia minima)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to Oregon, also in eastern North America.
Habitat: Heaths, sandy soils, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: June-Sept.
Cottontop (Micropus californicus)
Distribution: Occurring east of the Cascades crest in south-central Washington; Washington to California.
Habitat: Dry, open areas at low to moderate elevations.
Origin: Native
Flowers: April-May
Daggerleaf cottonweed (Logfia gallica)
Origin: Introduced
Black cottonwood (Populus nigra)
Origin: Introduced
Black cottonwood (Populus trichocarpa)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta and Wyoming.
Habitat: Streambanks, riparian zones, river corridors, and moist woods, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Eastern cottonwood (Populus deltoides)
Origin: Introduced
Narrow-leaved cottonwood (Populus angustifolia)
Origin: Native
Cous (Lomatium cous)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to northeast Nevada, east to Montana and Wyoming.
Habitat: Dry, open, often rocky places often with sagebrush; common at low elevations, occasionally found at higher elevations.
Origin: Native
Flowers: April-July
American cow-parsnip (Heracleum maximum)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America except in the southeastern U.S.
Habitat: Moist areas, including meadows and forest edge from low to middle elevations.
Origin: Native
Flowers: June-August
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
Flowers: April-May
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
Flowers: May-August
Flowering tea crabapple (Malus hupehensis)
Origin: Introduced
Japanese crabapple (Malus toringo)
Origin: Introduced
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
Flowers: April-May
Pearleaf crabapple (Malus prunifolia)
Origin: Introduced
Plumleaf crabapple (Malus prunifolia)
Origin: Introduced
Siberian crabapple (Malus baccata)
Origin: Introduced
Siebold crabapple (Malus toringo)
Origin: Introduced
Tea crabapple (Malus hupehensis)
Origin: Introduced
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
Flowers: April-May
Hairy crabgrass (Digitaria sanguinalis)
Distribution: A weed in most of the United States.
Habitat: Lawns, gardens, and wasteland.
Origin: Introduced from Eurasia
Flowers: July - October
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
Flowers: July - September
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 northeastern United States
Flowers: May - June
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
Flowers: May-July
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 northeastern United States
Flowers: May - June
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
Flowers: May-July
Crane's-bill (Geranium ×oxonianum)
Distribution: Occurring west of the Cascades crest in lowland western Washington; Washington to northwestern Oregon.
Habitat: Disturbed forest understory or edge at low elevations.
Origin: Introduced from Europe
Flowers: May-June
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
Flowers: March-July
Dalmatian crane's-bill (Geranium dalmaticum)
Origin: Introduced
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
Flowers: June-August
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
Flowers: May-August
Purple crane's-bill (Geranium purpureum)
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California.
Habitat: Roadsides, fields, lawns, wastelots, and other disturbed open areas at low elevation.
Origin: Introduced from Europe
Flowers: May-June
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
Flowers: May-August
Spanish crane's-bill (Geranium ibericum)
Origin: Introduced
Sticky purple crane's-bill (Geranium viscosissimum)
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains..
Habitat: Moist meadows and slopes, and forest openings, from the foothills to the middle elevations.
Origin: Native
Flowers: May-July
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
Flowers: June-August
Shining cranes-bill (Geranium lucidum)
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Disturbed areas such as roadsides and ditches, usually where moist, at low elevations.
Origin: Introduced from Europe
Flowers: Apr-June
Hedgerow cranesbill (Geranium pyrenaicum)
Origin: Introduced
Boreal crazyweed (Oxytropis borealis)
Distribution: Occurring in the Olympic Mountains in Washington; Alaska to California, east to Rocky Mountains, also in eastern Canada.
Habitat: Subalpine and alpine areas.
Origin: Native
Flowers: June-August
Pendent-pod crazyweed (Oxytropis deflexa)
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to California, east to the Rocky Mountains, and east across Canada to the Atlantic Coast.
Habitat: Montane forest openings and meadows to the subalpine and alpine.
Origin: Native
Flowers: June-August
Bearded creeper (Crupina vulgaris)
Distribution: Occurring east of the Cascades crest in Washington; central and southeastern Washington to California, east to adjacent Idaho; also in eastern North America.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: April-July
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
Flowers: June-August
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
Flowers: June-August
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
Flowers: May-June
Belle Isle cress (Barbarea verna)
Origin: Introduced from Eurasia
Flowers: April - July
Columbia yellowcress cress (Rorippa columbiae)
Distribution: In the south-central counties of Washington; Washington south to California.
Habitat: Moist, sandy soil.
Origin: Native
Flowers: May-August
Cress (Rorippa columbiae)
Distribution: In the south-central counties of Washington; Washington south to California.
Habitat: Moist, sandy soil.
Origin: Native
Flowers: May-August
Field cress (Lepidium campestre)
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, meadows, river and stream banks, wastelots, and other distrubed open, often dry soils.
Origin: Introduced from Eurasia
Flowers: May-July
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
Flowers: April-June
Lyreleaved cress (Arabidopsis kamchatica)
Distribution: Occurring only in northwestern Washington; Alaska to Washington, east to Northwest Territory and Sasketchewan.
Habitat: Subalpine and alpine scree and talus slopes.
Origin: Native
Flowers: July-September
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
Flowers: March-May
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
Flowers: April-May
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
Flowers: May-August
Autumn crocus (Colchicum autumnale)
Distribution: Known from Pierce County in Washington; not reported for elsewhere in North America.
Habitat: Lowland grassy meadows, escaping or persisting from cultivation.
Origin: Introduced
Flowers: July-September
Early crocus (Crocus tommasinianus)
Origin: Introduced from southeast 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
Flowers: March-June
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
Flowers: May-July
Celery-leaved crowfoot (Ranunculus sceleratus)
Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.
Habitat: Moist meadows and boggy shoreland to semi-aquatic and often brackish areas.
Origin: Native
Flowers: May-September
Water crowfoot (Ranunculus aquatilis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana and Wyoming.
Habitat: In sluggish streams, ponds, lakes, and mudflats at low to moderate elevations.
Origin: Native
Flowers: May-August
White water crowfoot (Ranunculus aquatilis)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana and Wyoming.
Habitat: In sluggish streams, ponds, lakes, and mudflats at low to moderate elevations.
Origin: Native
Flowers: May-August
King's crown (Rhodiola integrifolia)
Distribution: In the Cascades and northeastern corner of Washington; Alaska to south to California, east to Colorado.
Habitat: Cliffs, talus and ridges, subalpine to alpine, generally where moist in early summer.
Origin: Native
Flowers: June-August
Crown vetch (Securigera varia)
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east across North America.
Habitat: Roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Eurasia
Flowers: June-August
Small crumbweed (Dysphania pumilio)
Distribution: Occurring along the southern border of Washington; southern British Columbia to California and northern Nevada, east to Idaho; scattered in eastern half of U.S.
Habitat: Sandy or gravelly soils, streambanks, waste areas, and other disturbed sites.
Origin: Introduced from Australia
Flowers: July-September
Crupina (Crupina vulgaris)
Distribution: Occurring east of the Cascades crest in Washington; central and southeastern Washington to California, east to adjacent Idaho; also in eastern North America.
Habitat: Roadsides, fields, ditches, wastelots, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: April-July
Beaked cryptantha (Cryptantha rostellata)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to California.
Habitat: Sagebrush desert, open slopes and hillsides, typically where dry, at low elevations.
Origin: Native
Flowers: April-June
Common cryptantha (Cryptantha affinis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forest openings at moderate elevations.
Origin: Native
Flowers: June-July
Common cryptantha (Cryptantha intermedia)
Distribution: Occurring on both sides of the Cascades crest and east in the Columbia River Gorge in Washington; Washington to California, east to western Idaho and northwestern Nevada.
Habitat: Forest openings, open slopes, and remnant balds at low to middle elevations in the mountains.
Origin: Native
Flowers: May-September
Cushion cryptantha (Greeneocharis 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
Flowers: April - July
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
Flowers: May - July
Fendler's cryptantha (Cryptantha fendleri)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Sand dunes and very sandy soil at low to middle elevations.
Origin: Native
Flowers: May-July
Flaccid cryptantha (Cryptantha flaccida)
Distribution: Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; central Washington to southern California, east to Idaho, Nevada, and Utah.
Habitat: Dry, open slopes and flats at lower elevations.
Origin: Native
Flowers: May-June
Large-flowered cryptantha (Cryptantha grandiflora)
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to northeastern Oregon, east to Salmon River area in western Idaho.
Habitat: Grasslands, open conifer forest, scree slopes, and volcanic-based substrates.
Origin: Native
Flowers: May-July
Matted cryptantha (Greeneocharis 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
Flowers: April - July
Narrow-stem cryptantha (Cryptantha gracilis)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California east to Idaho, Wyoming, Colorado, and New Mexico.
Habitat: Sagebrush desert and grassy slopes at low elevations to ponderosa pine forest openings at middle elevations.
Origin: Native
Flowers: May-July
Obscure cryptantha (Cryptantha ambigua)
Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to western Montana, Wyoming, Utah, and Colorado.
Habitat: Dry, open places from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: June-July
Pine woods cryptantha (Cryptantha simulans)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush desert and ponderosa pine forest openings, often where disturbed.
Origin: Native
Flowers: May-July
Slender cryptantha (Cryptantha affinis)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and South Dakota.
Habitat: Open areas from sagebrush to coniferous forest openings at moderate elevations.
Origin: Native
Flowers: June-July
Slender cryptantha (Cryptantha gracilis)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California east to Idaho, Wyoming, Colorado, and New Mexico.
Habitat: Sagebrush desert and grassy slopes at low elevations to ponderosa pine forest openings at middle elevations.
Origin: Native
Flowers: May-July
Snake River cryptantha (Oreocarya 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
Flowers: May-July
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
Flowers: May-July
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
Flowers: May-August
Wilke's cryptantha (Cryptantha ambigua)
Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to western Montana, Wyoming, Utah, and Colorado.
Habitat: Dry, open places from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: June-July
Wingnut cryptantha (Cryptantha pterocarya)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho, Colorado and Texas.
Habitat: Dry, open, often sandy areas of sagebrush and grasslands.
Origin: Native
Flowers: April-June
Cuckooflower (Cardamine pratensis)
Distribution: Currently known only from King County in Washington; southwestern British Columbia to Oregon; more commonly found in northeastern North America.
Habitat: Disturbed areas including lawns and forest edges of urban and suburban areas.
Origin: Introduced
Flowers: April-May
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
Flowers: July-September
California cudweed (Pseudognaphalium californicum)
Origin: Native
Flowers: June - July
Cotton batting cudweed (Pseudognaphalium stramineum)
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to the Great Plains of the U.S.; also in scattered states along the Atlantic Coast.
Habitat: Open, usually moist places, often in disturbed soil.
Origin: Native
Flowers: June-October
Cudweed (Filago arvensis)
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.
Habitat: Dry, open waste land and overgrazed ranges.
Origin: Introduced
Flowers: July-September
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
Flowers: May-October
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
Flowers: July-October
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
Flowers: May-October
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
Flowers: June-September
Small cudweed (Logfia minima)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to Oregon, also in eastern North America.
Habitat: Heaths, sandy soils, and other disturbed, open areas.
Origin: Introduced from Europe
Flowers: June-Sept.
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
Flowers: May-October
Sticky cudweed (Pseudognaphalium macounii)
Origin: Native
Weedy cudweed (Pseudognaphalium luteoalbum)
Distribution: Locally introduced, chiefly west of the Cascades.
Habitat: Disturbed waste ground.
Origin: Introduced
Flowers: June - October
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
Flowers: May-October
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
Flowers: June-August
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
Flowers: May-July
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
Flowers: June-August
American red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to the northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Moist woods and rocky slopes at middle to high elevations in the mountains.
Origin: Native
Flowers: April-June
Blood currant (Ribes sanguineum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Origin: Native
Flowers: March-June
California black currant (Ribes bracteosum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California.
Habitat: Moist to wet woods, from low to middle elevations.
Origin: Native
Flowers: May-June
Cultivated black currant (Ribes nigrum)
Origin: Introduced
Golden currant (Ribes aureum)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to across most of North America to the Atlantic Coast.
Habitat: Sagebrush desert where seasonally moist to ponderosa pine forest openings at middle elevations.
Origin: Native
Flowers: April-May
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
Flowers: May-July
Hudson Bay currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Canadian Great Plains, Great Lakes region, and eastern Canada.
Habitat: Stream banks, moist woods and meadow margins at middle elevations in the mountains.
Origin: Native
Flowers: May-July
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
Flowers: June-August
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
Flowers: May-July
Northern black currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Canadian Great Plains, Great Lakes region, and eastern Canada.
Habitat: Stream banks, moist woods and meadow margins at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Northern red currant (Ribes rubrum)
Origin: Introduced
Flowers: April - May
Red currant (Ribes sanguineum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Origin: Native
Flowers: March-June
Red flowering currant (Ribes sanguineum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California.
Origin: Native
Flowers: March-June
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
Flowers: May-July
Stink currant (Ribes bracteosum)
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California.
Habitat: Moist to wet woods, from low to middle elevations.
Origin: Native
Flowers: May-June
Swamp currant (Ribes lacustre)
Distribution: Occurring in forested and mountainous areas on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America.
Habitat: Moist forests and stream banks to forestd slopes and subalpine ridges.
Origin: Native
Flowers: April-July
Swamp red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to the northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Moist woods and rocky slopes at middle to high elevations in the mountains.
Origin: Native
Flowers: April-June
Trailing black currant (Ribes laxiflorum)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Wet coastal woods from low to middle elevations in the mountains.
Origin: Native
Flowers: April-July
Wax currant (Ribes cereum)
Distribution: Widespread east of the Cascades crest in Washington; British Columbia to California, east to the Great Plains.
Habitat: Shrub-steppe and sagebrush desert to sub-alpine ridges.
Origin: Native
Flowers: April-June
Western black currant (Ribes hudsonianum)
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Canadian Great Plains, Great Lakes region, and eastern Canada.
Habitat: Stream banks, moist woods and meadow margins at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Wild red currant (Ribes triste)
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to the northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Moist woods and rocky slopes at middle to high elevations in the mountains.
Origin: Native
Flowers: April-June
Winaha currant (Ribes wolfii)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent Oregon and Idaho, south and east to the southern Rocky Mountains.
Habitat: Moist forests and meadows, montane to subalpine.
Origin: Native
Flowers: May-July
Wolf's currant (Ribes wolfii)
Distribution: Occurring east of the Cascades crest in the southeastern counties in Washington; southeastern Washington to adjacent Oregon and Idaho, south and east to the southern Rocky Mountains.
Habitat: Moist forests and meadows, montane to subalpine.
Origin: Native
Flowers: May-July
Columbia cut-leaf (Hymenopappus filifolius)
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to the Great Plains of Canada and the U.S.
Habitat: Dry, often sandy places in the foothills and plains.
Origin: Native
Flowers: May-July
Ivy-leaf cyclamen (Cyclamen hederifolium)
Origin: Introduced
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
Flowers: July-September
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
Flowers: July-September