Rosaceae
Rose Family
41 genera
151 species
40 subspecies and varieties
151 species
40 subspecies and varieties
Show only taxa with photos
Order by:
Scientific name
Common name
Display as:
Index to genera:
Agrimonia, Amelanchier, Aphanes, Aronia, Aruncus, Cercocarpus, Chaenomeles, Comarum, Cotoneaster, Crataegus, Dasiphora, Dryas, Drymocallis, Duchesnea, Filipendula, Fragaria, Geum, Holodiscus, Horkelia, Ivesia, Luetkea, Malus, Mespilus, Oemleria, Petrophytum, Photinia, Physocarpus, Potentilla, Poteridium, Poterium, Prunus, Purshia, Pyracantha, Pyrus, Rosa, Rubus, Sanguisorba, Sibbaldia, Sorbaria, Sorbus, SpiraeaAgrimonia gryposepala – tall hairy agrimony, tall hairy grooveburr
Distribution: Reported from Washington but currently no specimens exist; British Columbia to California, east to the Rocky Mountains.
Habitat: Edges, openings, draws, thickets, and open forest.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Reported from Washington but currently no specimens exist; British Columbia to California, east to the Rocky Mountains.
Habitat: Edges, openings, draws, thickets, and open forest.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Amelanchier alnifolia – saskatoon, serviceberry
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and Great Plains.
Habitat: Open woods, canyons and hillsides, sea level to subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and Great Plains.
Habitat: Open woods, canyons and hillsides, sea level to subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Amelanchier utahensis – Utah serviceberry
Distribution: Occurring east of the Cascades crest in Washington; Washington to Baja California, east to the Rocky Mountains and Texas.
Habitat: Rimrock, valleys, gullies and hillsides, from sagebrush desert to mid-elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to Baja California, east to the Rocky Mountains and Texas.
Habitat: Rimrock, valleys, gullies and hillsides, from sagebrush desert to mid-elevations in the mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Aphanes arvensis – western lady's-mantle, field parsley-piert
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, reported in Idaho, also along Atlantic Coast in the U.S.
Habitat: Ledges, often limy, sandy shores, hot springs, and other disturbed open ground at low elevations.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, reported in Idaho, also along Atlantic Coast in the U.S.
Habitat: Ledges, often limy, sandy shores, hot springs, and other disturbed open ground at low elevations.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Annual
Aphanes australis – small-fruited parsley-piert
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to northwestern Oregon, also in southeastern U.S.
Habitat: Openings, shores, lawns, and other disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to northwestern Oregon, also in southeastern U.S.
Habitat: Openings, shores, lawns, and other disturbed areas at low elevations.
Origin: Introduced from Europe
Flowers: March-May
Growth Duration: Perennial
Aphanes occidentalis – western parsley-piert
Distribution: Occurring west of the Cascades crest in lowland western Washington and east in the Columbia River Gorge; southern British Columbia to California.
Habitat: Vernally damp grasslands, balds, fields, ledges, rocky slopes, open forest, shores, and beaches at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Distribution: Occurring west of the Cascades crest in lowland western Washington and east in the Columbia River Gorge; southern British Columbia to California.
Habitat: Vernally damp grasslands, balds, fields, ledges, rocky slopes, open forest, shores, and beaches at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Annual
Aruncus dioicus – sylvan goatsbeard
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Alberta, also in the eastern half of North America.
Habitat: Moist forest and forest edge from low elevations to the subalpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Alberta, also in the eastern half of North America.
Habitat: Moist forest and forest edge from low elevations to the subalpine.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• var. acuminatus – Sylvan goatsbeard
Cercocarpus ledifolius – mountain mahogany
Distribution: Occurring east of the Cascades crest in southeastern Washington (population in Chelan County was planted); southeastern Washington to California, east to the Rocky Mountains.
Habitat: Dry areas, from foothills to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington (population in Chelan County was planted); southeastern Washington to California, east to the Rocky Mountains.
Habitat: Dry areas, from foothills to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• var. intermontanus – birchleaf mountain-mahogany
• var. ledifolius – mountain mahogany
Comarum palustre – marsh cinquefoil, purple marshlocks
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Cotoneaster dammeri – bearberry cotoneaster
Origin: Introduced from China
Growth Duration: Perennial
Origin: Introduced from China
Growth Duration: Perennial
Cotoneaster dielsianus – Diel's cotoneaster
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwest British Columbia to southwest Oregon.
Habitat: Thickets, open forest, rocky slopes, meadows, and grasslands at low elevations.
Origin: Introduced from China
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwest British Columbia to southwest Oregon.
Habitat: Thickets, open forest, rocky slopes, meadows, and grasslands at low elevations.
Origin: Introduced from China
Flowers: May-July
Growth Duration: Perennial
Cotoneaster divaricatus – spreading cotoneaster
Origin: Introduced from China
Growth Duration: Perennial
Origin: Introduced from China
Growth Duration: Perennial
Cotoneaster franchetii – franchet's cotoneaster, orange cotoneaster
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Lowland forest edges, grassy balds, and disturbed areas.
Origin: Introduced from China
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Lowland forest edges, grassy balds, and disturbed areas.
Origin: Introduced from China
Flowers: May-June
Growth Duration: Perennial
Cotoneaster horizontalis – rock cotoneaster, rockspray cotoneaster, wall cotoneaster
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Cotoneaster lacteus – late cotoneaster, milk-flower cotoneaster
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Disturbed areas, thickets, and forest margins.
Origin: Introduced from China
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to California.
Habitat: Disturbed areas, thickets, and forest margins.
Origin: Introduced from China
Flowers: May-July
Growth Duration: Perennial
Cotoneaster lucidus – shiny cotoneaster
Origin: Introduced from Siberia and Mongolia
Growth Duration: Perennial
Origin: Introduced from Siberia and Mongolia
Growth Duration: Perennial
Cotoneaster rehderi – bullate cotoneaster, puckered-leaf cotoneaster
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.
Growth Duration: Perennial
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.
Growth Duration: Perennial
Cotoneaster salicifolius – willow-leaved cotoneaster
Origin: Introduced from China
Growth Duration: Perennial
Origin: Introduced from China
Growth Duration: Perennial
Cotoneaster simonsii – Himalayan cotoneaster, Simon's cotoneaster
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to central California.
Habitat: Thickets, forest openings, shorelines, balds, parks, and grasslands.
Origin: Introduced from southeast Asia
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to central California.
Habitat: Thickets, forest openings, shorelines, balds, parks, and grasslands.
Origin: Introduced from southeast Asia
Flowers: May-July
Growth Duration: Perennial
Cotoneaster tengyuehensis – Tengyueh cotoneaster
Origin: Introduced from China
Growth Duration: Perennial
Origin: Introduced from China
Growth Duration: Perennial
Crataegus castlegarensis – Castlegar hawthorn
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to Idaho, Montana, and Utah.
Habitat: Grasslands, riparian zones, thickets, openings, and seeps.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to California, east to Idaho, Montana, and Utah.
Habitat: Grasslands, riparian zones, thickets, openings, and seeps.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Crataegus chrysocarpa – fireberry hawthorn
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Thickets, dry slopes, shrub-steppe, riparian zones, forest openings.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Thickets, dry slopes, shrub-steppe, riparian zones, forest openings.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Crataegus ×cogswellii – Oregon hybrid hawthorn
Distribution: Occurring west of the Cascades crest in Washington; western Washington to the Willamette Valley in Oregon.
Habitat: Wet prairie, thickets, and shores, generally occurring near where both parent species occur.
Origin: Introduced
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; western Washington to the Willamette Valley in Oregon.
Habitat: Wet prairie, thickets, and shores, generally occurring near where both parent species occur.
Origin: Introduced
Flowers: May-July
Growth Duration: Perennial
Crataegus douglasii – black hawthorn, Douglas's hawthorn
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Saskatchewan, Idaho and Montana, also in the Great Lakes region.
Habitat: Thickets, open forests, forest edges, and riparian zones, from lowlands to middle elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Saskatchewan, Idaho and Montana, also in the Great Lakes region.
Habitat: Thickets, open forests, forest edges, and riparian zones, from lowlands to middle elevations.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Crataegus gaylussacia – huckleberry hawthorn, Suksdorf's hawthorn
Distribution: Occurring on both sides of the Cascades crest in Washington; disjunct in southeast Alaska, otherwise southern British Columbia to California, east to Montana.
Habitat: Thickets, grasslands, riparian zones, shores, and meadows, from lowl to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; disjunct in southeast Alaska, otherwise southern British Columbia to California, east to Montana.
Habitat: Thickets, grasslands, riparian zones, shores, and meadows, from lowl to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Crataegus laevigata – midland hawthorn, woodland hawthorn
Distribution: Known only from the San Juan Islands in Washington.
Origin: Introduced from northern Europe
Growth Duration: Perennial
Distribution: Known only from the San Juan Islands in Washington.
Origin: Introduced from northern Europe
Growth Duration: Perennial
Crataegus macracantha – large-thorned hawthorn, western large-thorned hawthorn
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to northeastern Oregon, east to the Rocky Mountains, and further east across the U.S. and Canada to the Atlantic Coast.
Habitat: Thickets, riparian zones, and pastures.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; southern British Columbia to northeastern Oregon, east to the Rocky Mountains, and further east across the U.S. and Canada to the Atlantic Coast.
Habitat: Thickets, riparian zones, and pastures.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Crataegus monogyna – English hawthorn, one-seed hawthorn
Distribution: Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to California, east to Montana, also in the Great Lakes region and eastern North America.
Habitat: Roadsides, fields, pastures, meadows, thickets, and forest edge and understory at low elevations, often associated with disturbance. Seeds readily dispersed by birds.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to California, east to Montana, also in the Great Lakes region and eastern North America.
Habitat: Roadsides, fields, pastures, meadows, thickets, and forest edge and understory at low elevations, often associated with disturbance. Seeds readily dispersed by birds.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
• var. monogyna – common hawthorn, English hawthorn, one-seeded hawthorn
Crataegus okanaganensis – Okanagan hawthorn
Distribution: Occurring east of the Cascades crest in Washington in northern Washington; southern British Columbia to northern Washington, east to northern Idaho.
Habitat: Mesic thickets, riparian zones, and shorelines.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington in northern Washington; southern British Columbia to northern Washington, east to northern Idaho.
Habitat: Mesic thickets, riparian zones, and shorelines.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Crataegus okennonii – O'Kennon's hawthorn
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana.
Habitat: Thickets, riparian zones, and grasslands.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana.
Habitat: Thickets, riparian zones, and grasslands.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Crataegus phaenopyrum – Washington thorn
Distribution: Occurring west of the Cascades crest in lowland western Washington; Washington to Oregon, and also in eastern North America where native.
Habitat: Grasslands, shores, and damp thickets.
Origin: Introduced from eastern North America
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; Washington to Oregon, and also in eastern North America where native.
Habitat: Grasslands, shores, and damp thickets.
Origin: Introduced from eastern North America
Flowers: May-July
Growth Duration: Perennial
Crataegus phippsii – Phipps's hawthorn
Distribution: Occurring east of the Cascades crest in north-central Washington; southern British Columbia to northern Washington, also in Montana but not known from Idaho.
Habitat: Floodplains, open forests, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in north-central Washington; southern British Columbia to northern Washington, also in Montana but not known from Idaho.
Habitat: Floodplains, open forests, and thickets.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Crataegus tenuior – slender red hawthorn
Distribution: Occurring east of the Cascades crest in north-central Washington; south-central British Columbia to north-central Washington.
Habitat: Grasslands, thickets, and forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in north-central Washington; south-central British Columbia to north-central Washington.
Habitat: Grasslands, thickets, and forest openings.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Dasiphora fruticosa – shrubby cinquefoil
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east 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
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east 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
Growth Duration: Perennial
Dryas drummondii – yellow mountain-avens
Distribution: Known from only a small number of scattered locations on both sides of the Cascades crest in Washington; Alaska to the North Cascades and Selkirk Mountains of Washington, the Wallowa Mountains of Oregon, and the Rocky Mountains of Montana; east across Canada to the Atlantic Coast.
Habitat: High elevations, often above timberline, but down to lower elevations along streams
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Known from only a small number of scattered locations on both sides of the Cascades crest in Washington; Alaska to the North Cascades and Selkirk Mountains of Washington, the Wallowa Mountains of Oregon, and the Rocky Mountains of Montana; east across Canada to the Atlantic Coast.
Habitat: High elevations, often above timberline, but down to lower elevations along streams
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Dryas hookeriana – white dryas, Hooker's mountain-avens, white mountain-avens
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to Washington, northeast Oregon, and in the Rockies from Northwest Territory to Montana, Idaho, Utah, Wyoming and Colorado.
Habitat: Open, rocky areas, middle to high elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to Washington, northeast Oregon, and in the Rockies from Northwest Territory to Montana, Idaho, Utah, Wyoming and Colorado.
Habitat: Open, rocky areas, middle to high elevations in the mountains.
Origin: Native
Flowers: June-September
Growth Duration: Perennial
Drymocallis arguta – cordilleran drymocallis
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, Nevada, and Arizona, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Dry to vernally moist meadows, grasslands, shrub-steppe, open forest, and rocky slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, Nevada, and Arizona, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Dry to vernally moist meadows, grasslands, shrub-steppe, open forest, and rocky slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Drymocallis glandulosa – sticky cinquefoil
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and Arizona.
Habitat: Open, mesic areas from coastal meadows to forest openings, to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and Arizona.
Habitat: Open, mesic areas from coastal meadows to forest openings, to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• ssp. glabrata – Idaho wood beauty
• ssp. glandulosa – gland cinquefoil, sticky cinquefoil
• ssp. pseudorupestris – cliff drymocallis
Duchesnea indica – Indian-strawberry, mock-stawberry
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to Oregon; also in eastern North America.
Habitat: Disturbed forest and forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Asia
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to Oregon; also in eastern North America.
Habitat: Disturbed forest and forest edge at low elevations, where escaping from cultivation.
Origin: Introduced from Asia
Flowers: May-June
Growth Duration: Perennial
• var. indica – Indian strawberry, mock strawberry
Filipendula occidentalis – queen-of-the-forest
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington and adjacent northwestern Oregon.
Habitat: Damp mossy river rocks, near high water line, wet rocky slopes.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington and adjacent northwestern Oregon.
Habitat: Damp mossy river rocks, near high water line, wet rocky slopes.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Fragaria chiloensis – beach strawberry, coastal strawberry
Distribution: Occurring west of the Cascades crest in the coastal counties of Washington; Alaska to California.
Habitat: Sand dunes, strand, headlands, and other open coastal habitats.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in the coastal counties of Washington; Alaska to California.
Habitat: Sand dunes, strand, headlands, and other open coastal habitats.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• ssp. pacifica – beach strawberry, coastal strawberry
Fragaria vesca – woodland strawberry
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Moist woods, stream banks and sandy meadows, low to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Moist woods, stream banks and sandy meadows, low to middle elevations in the mountains.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• ssp. californica – woodland strawberry
Fragaria virginiana – blueleaf strawberry, mountain strawberry
Distribution: Occurring chiefly east of the Cascades crest in Washington except in sagebrush areas; Alaska to California, east to the Atlantic Coast.
Habitat: Open woods to gravelly meadows in the plains and lower mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington except in sagebrush areas; Alaska to California, east to the Atlantic Coast.
Habitat: Open woods to gravelly meadows in the plains and lower mountains.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
• ssp. glauca – blueleaf strawberry, broadpetal strawberry, wild strawberry
Geum aleppicum – yellow avens
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east across Canada and the U.S., except the south-central and southeast regions, to the Atlantic Coast.
Habitat: Shores, streams, damp thickets, damp forests, wet meadows, and peatlands.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east across Canada and the U.S., except the south-central and southeast regions, to the Atlantic Coast.
Habitat: Shores, streams, damp thickets, damp forests, wet meadows, and peatlands.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Geum macrophyllum – bigleaf avens, large-leaved avens
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to Baja California, east to the Great Plains and east across Canada to the Atlantic Coast.
Habitat: Common in moist woods and meadows from sea level to subalpine.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to Baja California, east to the Great Plains and east across Canada to the Atlantic Coast.
Habitat: Common in moist woods and meadows from sea level to subalpine.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Geum rivale – purple avens, water avens
Distribution: Occurring east of the Cascades crest in the northeastern counties in Washington British Columbia to northeastern Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region and northeastern North America; circumboreal.
Habitat: Stream banks, lake shores, bogs and wet meadows from middle elevations to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in the northeastern counties in Washington British Columbia to northeastern Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region and northeastern North America; circumboreal.
Habitat: Stream banks, lake shores, bogs and wet meadows from middle elevations to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Geum rossii – Ross's avens
Distribution: Occurring east of the Cascades crest in the Wenatchee Mountains in Washington; Alaska to California, east to the Rocky Mountains, and eastward across northern Canada to Greenland; also in Far East Russia.
Habitat: Arctic tundra, high gravelly meadows and scree slopes.
Origin: Native
Flowers: June- August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in the Wenatchee Mountains in Washington; Alaska to California, east to the Rocky Mountains, and eastward across northern Canada to Greenland; also in Far East Russia.
Habitat: Arctic tundra, high gravelly meadows and scree slopes.
Origin: Native
Flowers: June- August
Growth Duration: Perennial
Geum triflorum – prairie smoke, old-man's whiskers
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the northern Great Plains, and Great Lakes regions.
Habitat: Prairies, balds, and moister places in the sagebrush plains, from the foothills to subalpine ridges.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the northern Great Plains, and Great Lakes regions.
Habitat: Prairies, balds, and moister places in the sagebrush plains, from the foothills to subalpine ridges.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Geum urbanum – herb-bennet
Distribution: In scattered locations on both sides of the Cascades crest in Washington; Washington to Oregon, east to Idaho and Utah.
Habitat: Disturbed areas in including, roadsides, wastelots, and fields.
Origin: Introduced from Eurasia
Flowers: May-September
Growth Duration: Perennial
Distribution: In scattered locations on both sides of the Cascades crest in Washington; Washington to Oregon, east to Idaho and Utah.
Habitat: Disturbed areas in including, roadsides, wastelots, and fields.
Origin: Introduced from Eurasia
Flowers: May-September
Growth Duration: Perennial
Holodiscus discolor – creambush ocean-spray, hillside ocean-spray
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Gravelly soil in open, dry to moist woods, coastal bluffs to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Gravelly soil in open, dry to moist woods, coastal bluffs to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• var. discolor – ocean-spray
Luetkea pectinata – luetkea, partridgefoot
Distribution: Occurring in the Olympic and Cascades mountains in Washington; Alaska to California, east to Northwest Territory, Alberta, Idaho, and Montana.
Habitat: Usually on sandy soil in moist or shady places, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Olympic and Cascades mountains in Washington; Alaska to California, east to Northwest Territory, Alberta, Idaho, and Montana.
Habitat: Usually on sandy soil in moist or shady places, subalpine to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Malus baccata – Siberian crabapple
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to southern Washington.
Habitat: Mesic thickets and riparian zones.
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to southern Washington.
Habitat: Mesic thickets and riparian zones.
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Perennial
Malus ×dawsoniana – Dawson apple
Distribution: Occurring west of the Cascades crest in Washington; Washington to Oregon.
Habitat: Fields, thickets, open damp forests, sea bluffs, roadsides, wastelots, and abandoned homesteads.
Origin: Escaping from cultivation
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to Oregon.
Habitat: Fields, thickets, open damp forests, sea bluffs, roadsides, wastelots, and abandoned homesteads.
Origin: Escaping from cultivation
Flowers: April-May
Growth Duration: Perennial
Malus domestica – cultivated apple, orchard apple
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Mesic thickets and riparian zones.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Mesic thickets and riparian zones.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Malus fusca – Oregon crabapple, western crabapple
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California.
Habitat: Moist woods, swamps and open canyons from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California.
Habitat: Moist woods, swamps and open canyons from sea level to moderate elevations in the mountains.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Malus hupehensis – flowering tea crabapple
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to southwestern Washington, also in Illinois.
Habitat: Seasonally damp thickets, open forest.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to southwestern Washington, also in Illinois.
Habitat: Seasonally damp thickets, open forest.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Malus prunifolia – pearleaf crabapple, plumleaf crabapple
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to northern Oregon, also in the Great Lakes region and northeastern North America.
Habitat: Damp thickets, forest edges, and riparian zones.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Washington to northern Oregon, also in the Great Lakes region and northeastern North America.
Habitat: Damp thickets, forest edges, and riparian zones.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Oemleria cerasiformis – oso-berry, Indian plum
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Moist to dry, open forest, forest edge, and stream bank thickets at low elevation.
Origin: Native
Flowers: February-April
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California.
Habitat: Moist to dry, open forest, forest edge, and stream bank thickets at low elevation.
Origin: Native
Flowers: February-April
Growth Duration: Perennial
Petrophytum caespitosum – Rocky Mountain rockmat
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Montana, Idaho, New Mexico, Texas, and South Dakota.
Habitat: Dry, limy or granite cliffs, ledges, talus, and rocky slopes, lowland to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Montana, Idaho, New Mexico, Texas, and South Dakota.
Habitat: Dry, limy or granite cliffs, ledges, talus, and rocky slopes, lowland to alpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• ssp. caespitosum – Rocky Mountain rockmat
Petrophytum cinerascens – Chelan rockmat
Distribution: Occurring east of the Cascades crest, where endemic to the Columbia River region of central Washington.
Habitat: Basaltic cliffs.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where endemic to the Columbia River region of central Washington.
Habitat: Basaltic cliffs.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Petrophytum hendersonii – Olympic Mountain rockmat
Distribution: Occurring west of the Cascades crest, where endemic to the Olympic Mountains.
Habitat: Rocky cliffs and talus slopes at middle to high elevations.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest, where endemic to the Olympic Mountains.
Habitat: Rocky cliffs and talus slopes at middle to high elevations.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Photinia davidiana – Chinese redtip, stranvaesia
Distribution: Occurring west of the Cascades crest in lowland western Washington.
Habitat: Thickets, open forests, shores, rarely epiphytic
Origin: Introduced from China
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington.
Habitat: Thickets, open forests, shores, rarely epiphytic
Origin: Introduced from China
Flowers: April-June
Growth Duration: Perennial
• var. davidiana – Chinese redtip, stranvaesia
Physocarpus capitatus – Pacific ninebark
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho.
Habitat: Moist woods and swamps in the lower mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho.
Habitat: Moist woods and swamps in the lower mountains.
Origin: Native
Flowers: May-June
Growth Duration: Perennial
Physocarpus malvaceus – mallow ninebark, mallow-leaf ninebark
Distribution: Occurring east of the Cascades crest in eastern Washington; British Columbia to Oregon and Nevada, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Canyons and hillsides, grasslands, ponderosa pine and Douglas-fir forest openings and edge.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in eastern Washington; British Columbia to Oregon and Nevada, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Canyons and hillsides, grasslands, ponderosa pine and Douglas-fir forest openings and edge.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Potentilla anserina – silverweed cinquefoil, common silverweed
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, Great Lakes region, and northeastern North America.
Habitat: Wet, alkaline areas from coast to arid inlands.
Origin: Native
Flowers: April-October
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, Great Lakes region, and northeastern North America.
Habitat: Wet, alkaline areas from coast to arid inlands.
Origin: Native
Flowers: April-October
Growth Duration: Perennial
• ssp. anserina – silvery cinquefoil, common silverweed
• ssp. pacifica – Pacific silverweed
Potentilla argentea – hoary cinquefoil, silver cinquefoil
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Sandy or gravely soil, typically where disturbed.
Origin: Introduced from Eurasia
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Sandy or gravely soil, typically where disturbed.
Origin: Introduced from Eurasia
Flowers: June-July
Growth Duration: Perennial
Potentilla biennis – biennial cinquefoil
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Disturbed areas, typically where moist to wet.
Origin: Native
Flowers: May-August
Growth Duration: Annual, Biennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Disturbed areas, typically where moist to wet.
Origin: Native
Flowers: May-August
Growth Duration: Annual, Biennial
Potentilla breweri – Brewer's cinquefoil
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 at middle to high elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
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 at middle to high elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Potentilla douglasii
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho, Nevada, and Wyoming.
Habitat: Damp meadows to open forest and rocky slopes at middle elevations in the mountains.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho, Nevada, and Wyoming.
Habitat: Damp meadows to open forest and rocky slopes at middle elevations in the mountains.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
• var. capitata – horkelia
• var. douglasii – Douglas's cinquefoil
Potentilla drummondii – Drummond's cinquefoil
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana.
Habitat: Forest openings, meadows and high ridges, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Idaho, and Montana.
Habitat: Forest openings, meadows and high ridges, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Potentilla flabellifolia – fan-leaf cinquefoil, fringe-leaf cinquefoil, fan-foil
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 from middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
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 from middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Potentilla glaucophylla – blueleaf cinquefoil, different-leaved cinquefoil, diverse-leaved cinquefoil, vari-leaved cinquefoil
Distribution: Occurring 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
Growth Duration: Perennial
Distribution: Occurring 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
Growth Duration: Perennial
Potentilla gordonii – gordon's ivesia, alpine mousetail
Distribution: Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest from central Washington south; central Washington to California, east to Montana, Wyoming, and Colorado.
Habitat: Rocky slopes, grassland, sagebrush, forest openings, and subalpine to alpines ridges.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Potentilla gracilis – slender cinquefoil
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern Canada.
Habitat: Varied habitats; moderately saline soil, grasslands, moist areas in shrub-steppe, forested mountains and subalpine meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern Canada.
Habitat: Varied habitats; moderately saline soil, grasslands, moist areas in shrub-steppe, forested mountains and subalpine meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• var. brunnescens – glandular cinquefoil
• var. flabelliformis – comb-leaf cinquefoil, Elmer's cinquefoil, Idaho cinquefoil
• var. gracilis – Hall's cinquefoil, slender cinquefoil, wooly cinquefoil
• var. pulcherrima – beautiful cinquefoil
Potentilla hyparctica – subarctic cinquefoil
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
Growth Duration: Perennial
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
Growth Duration: Perennial
• ssp. elatior – subarctic cinquefoil
Potentilla newberryi – Newberry's cinquefoil
Distribution: Known historically (1898) from the Columbia River Gorge in Washington, now likely extirpated; central Oregon to California, east to northwestern Nevada.
Habitat: Vernal pools, shores, and mudflats.
Origin: Native
Flowers: April-May
Growth Duration: Annual, Biennial, Perennial
Distribution: Known historically (1898) from the Columbia River Gorge in Washington, now likely extirpated; central Oregon to California, east to northwestern Nevada.
Habitat: Vernal pools, shores, and mudflats.
Origin: Native
Flowers: April-May
Growth Duration: Annual, Biennial, Perennial
Potentilla nivea – snow cinquefoil
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Potentilla norvegica – Norwegian cinquefoil, rough cinquefoil
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Usually in moist soil, often along irrigation ditches or in waste places.
Origin: Native
Flowers: May-August
Growth Duration: Annual, Biennial, Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Usually in moist soil, often along irrigation ditches or in waste places.
Origin: Native
Flowers: May-August
Growth Duration: Annual, Biennial, Perennial
Potentilla pensylvanica – Pennsylvania cinquefoil
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
Growth Duration: Perennial
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
Growth Duration: Perennial
• var. ovium – Jepson's cinquefoil
Potentilla recta – sulphur cinquefoil
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, but not in Yukon Territory, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, trails, and disturbed ground.
Origin: Introduced
Flowers: June-August
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, but not in Yukon Territory, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, trails, and disturbed ground.
Origin: Introduced
Flowers: June-August
Growth Duration: Perennial
Potentilla rivalis – brook cinquefoil, river cinquefoil
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
Growth Duration: Annual, Biennial
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
Growth Duration: Annual, Biennial
Potentilla supina – bushy cinquefoil
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, Great Plains, and east across Canada and the midwestern U.S. to northeastern North America.
Habitat: Sandy stream banks, lake shores, and moist flats.
Origin: Native
Flowers: June-July
Growth Duration: Annual, Biennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, Great Plains, and east across Canada and the midwestern U.S. to northeastern North America.
Habitat: Sandy stream banks, lake shores, and moist flats.
Origin: Native
Flowers: June-July
Growth Duration: Annual, Biennial
• ssp. paradoxa – bushy cinquefoil
Potentilla tweedyi – Tweedy's mousetail
Distribution: Occurring east of the Cascades crest in Washington; Washington to Idaho and Montana.
Habitat: Dry, open to wooded areas, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to Idaho and Montana.
Habitat: Dry, open to wooded areas, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Potentilla villosa – northern cinquefoil, villous cinquefoil
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Poteridium annuum – annual burnet, prairie burnet
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to northern California, east to the Rocky Mountains, also in eastern North America.
Origin: Native
Growth Duration: Annual
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to northern California, east to the Rocky Mountains, also in eastern North America.
Origin: Native
Growth Duration: Annual
Poterium sanguisorba – fodder burnet, small burnet
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, shores, pastures, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
Habitat: Roadsides, shores, pastures, wastelots, and other disturbed open areas.
Origin: Introduced from Eurasia and North Africa
Flowers: June-August
Growth Duration: Perennial
• var. polygamum – burnet bloodwort, fodder burnet, small burnet
Prunus americana – American plum, wild plum
Distribution: Occurring east of the Cascades crest in southcentral and southeastern Washington; Washington to Oregon, east to the Rocky Mountains, and further east across North America to the Atlantic Coast.
Habitat: Along watercourses, and on open or wooded, moist or dry areas from the plains into the lower mountains.
Origin: Native and introduced from further east of Washington
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in southcentral and southeastern Washington; Washington to Oregon, east to the Rocky Mountains, and further east across North America to the Atlantic Coast.
Habitat: Along watercourses, and on open or wooded, moist or dry areas from the plains into the lower mountains.
Origin: Native and introduced from further east of Washington
Flowers: April-May
Growth Duration: Perennial
Prunus armeniaca – apricot
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains, and in scattered areas eastward to the Atlantic Coast.
Habitat: Sagebrush desert, ledges, gravel or clay slopes, thickets, and shorelines
Origin: Introduced from China
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains, and in scattered areas eastward to the Atlantic Coast.
Habitat: Sagebrush desert, ledges, gravel or clay slopes, thickets, and shorelines
Origin: Introduced from China
Flowers: March-May
Growth Duration: Perennial
Prunus avium – sweet cherry
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Prunus cerasifera – cherry plum, Flowering plum
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington, but also in southeastern Washington; British Columbia to California, east to Idaho; also in northeastern North America.
Habitat: Open, disturbed areas typically at low elevations.
Origin: Introduced
Flowers: March-April
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington, but also in southeastern Washington; British Columbia to California, east to Idaho; also in northeastern North America.
Habitat: Open, disturbed areas typically at low elevations.
Origin: Introduced
Flowers: March-April
Growth Duration: Perennial
Prunus cerasus – sour cherry
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana, also east from the Great Plains to the midwestern U.S. and northeastern North America.
Habitat: Roadsides, thickets, forest edge, and fields.
Origin: Introduced from Eurasia
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana, also east from the Great Plains to the midwestern U.S. and northeastern North America.
Habitat: Roadsides, thickets, forest edge, and fields.
Origin: Introduced from Eurasia
Flowers: March-May
Growth Duration: Perennial
Prunus domestica – cultivated plum
Distribution: Occurring chiefly west of the Cascades crest in Washington; Washington to California, east to Idaho and Utah; in scattered locations of central and northeastern U.S.
Habitat: Fields, roadsides, forest openings, abandoned homesteads, and other disturbed areas.
Origin: Introduced from Eurasia
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Washington to California, east to Idaho and Utah; in scattered locations of central and northeastern U.S.
Habitat: Fields, roadsides, forest openings, abandoned homesteads, and other disturbed areas.
Origin: Introduced from Eurasia
Flowers: March-May
Growth Duration: Perennial
Prunus dulcis – almond
Distribution: Occurring in scattered locations east of the Cascades crest and in the Columbia River Gorge in Washington; Washington, Idaho, and California.
Habitat: Disturbed areas, mostly along riparian zones and rocky slopes.
Origin: Introduced from western Asia and northern Africa
Flowers: March-May
Growth Duration: Perennial
Distribution: Occurring in scattered locations east of the Cascades crest and in the Columbia River Gorge in Washington; Washington, Idaho, and California.
Habitat: Disturbed areas, mostly along riparian zones and rocky slopes.
Origin: Introduced from western Asia and northern Africa
Flowers: March-May
Growth Duration: Perennial
Prunus emarginata – bitter cherry
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
Growth Duration: Perennial
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
Growth Duration: Perennial
Prunus laurocerasus – laurel cherry, cherry-laurel, English laurel
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Fields, forest edge, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Prunus lusitanica – Portugal laurel
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Thickets, forested slopes, grasslands, and shorelines.
Origin: Introduced from Europe
Flowers: April-June
Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to California.
Habitat: Thickets, forested slopes, grasslands, and shorelines.
Origin: Introduced from Europe
Flowers: April-June
Prunus mahaleb – mahaleb cherry, perfumed cherry
Distribution: Ocurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and also in the eastern United States.
Origin: Introduced from Eurasia
Flowers: May - June
Growth Duration: Perennial
Distribution: Ocurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and also in the eastern United States.
Origin: Introduced from Eurasia
Flowers: May - June
Growth Duration: Perennial
Prunus padus – European bird cherry
Distribution: Occurring west of the Cascades crest in Washington; southern Alaska, southwestern British Columbia to northwestern Washington, Montana, and eastern North America.
Habitat: Ornamental, occasionally escapes
Origin: Introduced from Eurasia and northern Africa
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southern Alaska, southwestern British Columbia to northwestern Washington, Montana, and eastern North America.
Habitat: Ornamental, occasionally escapes
Origin: Introduced from Eurasia and northern Africa
Flowers: April-June
Growth Duration: Perennial
Prunus persica – peach
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to California, east to Idaho; also in eastern North America.
Habitat: Thickets, shores, and disturbed ground.
Origin: Introduced from eastern Asia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to California, east to Idaho; also in eastern North America.
Habitat: Thickets, shores, and disturbed ground.
Origin: Introduced from eastern Asia
Flowers: April-June
Growth Duration: Perennial
Prunus ×pugetensis – Puget Sound cherry
Distribution: Occurring chiefly west of the Cascades crest in Washington; Southwestern British Columbia to northwestern Oregon, east in the Columbia River Gorge and in Chelan County, WA.
Habitat: Low elevations in forests or forest edges, or disturbed areas, typically where both parent species are present.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Southwestern British Columbia to northwestern Oregon, east in the Columbia River Gorge and in Chelan County, WA.
Habitat: Low elevations in forests or forest edges, or disturbed areas, typically where both parent species are present.
Origin: Native
Flowers: April-May
Growth Duration: Perennial
Prunus spinosa – blackthorn
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to southern Oregon, east to Idaho.
Habitat: Moist draws, thickets, hillsides, roadsides, and railroads.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to southern Oregon, east to Idaho.
Habitat: Moist draws, thickets, hillsides, roadsides, and railroads.
Origin: Introduced from Eurasia and northern Africa
Flowers: April-May
Growth Duration: Perennial
Prunus tomentosa – Nanking cherry
Distribution: Occurring east of the Cascades crest in central Washington; also in Utah, and from northern Great Plains east to northeastern North America.
Habitat: Thickets and hedgerows.
Origin: Introduced from Asia
Flowers: April-May
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in central Washington; also in Utah, and from northern Great Plains east to northeastern North America.
Habitat: Thickets and hedgerows.
Origin: Introduced from Asia
Flowers: April-May
Growth Duration: Perennial
Prunus virginiana – common chokecherry, western chokecherry, white chokecherry
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Thickets, open forest, shorelines, rocky slopes, and roadsides.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Thickets, open forest, shorelines, rocky slopes, and roadsides.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Prunus yedoensis – Yoshino cherry
Distribution: Occurring west of the Cascades crest in lowland western Washington; also occurring in central California.
Habitat: Thickets and shorelines, often where disturbed.
Origin: Introduced from Japan
Flowers: March-April
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; also occurring in central California.
Habitat: Thickets and shorelines, often where disturbed.
Origin: Introduced from Japan
Flowers: March-April
Growth Duration: Perennial
Purshia tridentata – antelope-brush, bitterbrush
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Nebraska.
Habitat: Sagebrush desert and shrub-steppe to ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Widely distributed east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Nebraska.
Habitat: Sagebrush desert and shrub-steppe to ponderosa pine forests.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
• var. tridentata – anteleope-brush, bitterbrush
Pyracantha coccinea – firethorn, scarlet firethorn
Distribution: O Occurring in scattered locations across Washington; British Columbia south to California, east to the Atlantic Coast along the southern half of the U.S.
Habitat: Disturbed areas, wastelots, and forest margins often near towns and cities where escaped from cultivation.
Origin: Introduced from western Asia
Flowers: May-June
Growth Duration: Perennial
Distribution: O Occurring in scattered locations across Washington; British Columbia south to California, east to the Atlantic Coast along the southern half of the U.S.
Habitat: Disturbed areas, wastelots, and forest margins often near towns and cities where escaped from cultivation.
Origin: Introduced from western Asia
Flowers: May-June
Growth Duration: Perennial
Pyracantha fortuneana – Chinese firethorn
Distribution: Occurring west of the Cascades crest in lowland western Washington; southern British Columbia to California and Arizona, also in the southern and southeastern U.S.
Habitat: Disturbed, open areas where escaped from cultivation through bird-dispersal.
Origin: Introduced from China
Flowers: January-May
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington; southern British Columbia to California and Arizona, also in the southern and southeastern U.S.
Habitat: Disturbed, open areas where escaped from cultivation through bird-dispersal.
Origin: Introduced from China
Flowers: January-May
Growth Duration: Perennial
Pyrus communis – common pear
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Utah and New Mexico; also from southcentral U.S. east and northeast to the Atlantic Coast.
Habitat: Grasslands, thickets, shorelines, and forest openings;
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Utah and New Mexico; also from southcentral U.S. east and northeast to the Atlantic Coast.
Habitat: Grasslands, thickets, shorelines, and forest openings;
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Perennial
Rosa canina – dog rose
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and Arizona; also from Great Plains east to the Atlantic Coast.
Habitat: Roadsides, thickets, forest edge, and other distrubed areas..
Origin: Introduced
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Idaho, Utah, and Arizona; also from Great Plains east to the Atlantic Coast.
Habitat: Roadsides, thickets, forest edge, and other distrubed areas..
Origin: Introduced
Flowers: May-June
Growth Duration: Perennial
Rosa gymnocarpa – bald-hip rose
Distribution: Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; British Columbia to California, east to Montana.
Habitat: Dry to moist woods, forest edge, and thickets, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; British Columbia to California, east to Montana.
Habitat: Dry to moist woods, forest edge, and thickets, from sea level to middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Rosa multiflora – multiflora rose, rambler rose
Distribution: Occurring on both sides of the Cascades crest in Washinton; British Columbia to California; east to the southern Rocky Mountains, Great Plains, and eastern North America where widespread.
Habitat: Roadsides, fields, highway and utility right of ways, forest edge, and other often moist, disturbed areas where escaping from cultivation.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washinton; British Columbia to California; east to the southern Rocky Mountains, Great Plains, and eastern North America where widespread.
Habitat: Roadsides, fields, highway and utility right of ways, forest edge, and other often moist, disturbed areas where escaping from cultivation.
Origin: Introduced from Asia
Flowers: April-June
Growth Duration: Perennial
Rosa nutkana – Nootka rose
Distribution: Widely distributed throughout Washington on both sides of the Cascades crest; Alaska to California, east to the Rocky Mountains.
Habitat: Thickets, shores, forest edges, riparian zones, rocky slopes from low elevations to the montane.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Widely distributed throughout Washington on both sides of the Cascades crest; Alaska to California, east to the Rocky Mountains.
Habitat: Thickets, shores, forest edges, riparian zones, rocky slopes from low elevations to the montane.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• ssp. macdougalii – bristly Nootka rose
• ssp. nutkana – Nootka rose
Rosa pisocarpa – clustered rose, peafruit rose
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; southern British Columbia to California.
Habitat: Thickets, stream banks, and swampy places at lower elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Rosa rubiginosa – sweetbrier rose, small-flowered sweetbrier
Distribution: Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; southern British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado, further east from the Great Plains to the Atlantic Coast.
Habitat: Roadsides, thickets, shorelines, pastures, and other disturbed, open areas.
Origin: Introduced Eurasia and northern Africa
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; southern British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado, further east from the Great Plains to the Atlantic Coast.
Habitat: Roadsides, thickets, shorelines, pastures, and other disturbed, open areas.
Origin: Introduced Eurasia and northern Africa
Flowers: June-July
Growth Duration: Perennial
Rosa rugosa – rugosa rose
Distribution: Occurring west of the Cascades crest in coastal marine habitats; Alaska to Oregon; also in the north-central and northeastern areas of North America.
Habitat: Edge of saltwater beaches, roadsides, forest edge, fields, and other disturbed areas.
Origin: Introduced from Asia
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in coastal marine habitats; Alaska to Oregon; also in the north-central and northeastern areas of North America.
Habitat: Edge of saltwater beaches, roadsides, forest edge, fields, and other disturbed areas.
Origin: Introduced from Asia
Flowers: June-August
Growth Duration: Perennial
Rosa woodsii – pearhip rose
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains and Great Lakes region.
Habitat: Valleys and hillsides at low elevations to forest openings at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Great Plains and Great Lakes region.
Habitat: Valleys and hillsides at low elevations to forest openings at middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Rubus allegheniensis – Allegheny blackberry, common blackberry
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to Washington and California (but apparently not Oregon), east to Idaho; also from the central Great Plains to eastern North America.
Habitat: Damp thickets, peatlands, and forest openings.
Origin: Introduced from central and eastern North America
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to Washington and California (but apparently not Oregon), east to Idaho; also from the central Great Plains to eastern North America.
Habitat: Damp thickets, peatlands, and forest openings.
Origin: Introduced from central and eastern North America
Flowers: June-July
Growth Duration: Perennial
Rubus arcticus – nagoonberry
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to Oregon, east to the Rocky Mountains, and east across Canada to the Great Lakes Region and the northern Atlantic Coast.
Habitat: Montane meadows, bogs, and woodlands to alpine tundra.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in north-central Washington; Alaska to Oregon, east to the Rocky Mountains, and east across Canada to the Great Lakes Region and the northern Atlantic Coast.
Habitat: Montane meadows, bogs, and woodlands to alpine tundra.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Rubus bifrons – Himalayan blackberry
Distribution: Occurrng on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, southern Great Plains, and eastern North America.
Habitat: Disturbed areas, riparian zones, and forest edges at low elevations.
Origin: Introduced from Eurasia
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurrng on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, southern Great Plains, and eastern North America.
Habitat: Disturbed areas, riparian zones, and forest edges at low elevations.
Origin: Introduced from Eurasia
Flowers: May-August
Growth Duration: Perennial
Rubus idaeus – red raspberry
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Wet or dry woodland to open and often rocky mountain slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Wet or dry woodland to open and often rocky mountain slopes.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• ssp. idaeus – red raspberry
• ssp. strigosus – grayleaf red raspberry
Rubus laciniatus – cut-leaf blackberry, evergreen blackberry
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado.
Habitat: Roadsides, forest understory and edge, thickets, and other disturbed areas, mostly at low elevations.
Origin: Introduced from Europe
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado.
Habitat: Roadsides, forest understory and edge, thickets, and other disturbed areas, mostly at low elevations.
Origin: Introduced from Europe
Flowers: June-August
Growth Duration: Perennial
Rubus lasiococcus – roughfruit berry, dwarf bramble, hairy-fruit smooth dewberry
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Moist to dry woods, lowlands to subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California.
Habitat: Moist to dry woods, lowlands to subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Rubus leucodermis – blackcap raspberry, dark raspberry, whitebark raspberry
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to southern California, east to the Rocky Mountains.
Habitat: Thickets, forest edge and openings, fields, and hillsides from low to middle elevations.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to southern California, east to the Rocky Mountains.
Habitat: Thickets, forest edge and openings, fields, and hillsides from low to middle elevations.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Rubus nigerrimus – dark raspberry, northwest raspberry
Distribution: Occurring east of the Cascades crest, where endemic along the Snake River in Whitman County, Washington;
Habitat: Moist hillsides, usually along streams.
Origin: Native
Flowers: May - June
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest, where endemic along the Snake River in Whitman County, Washington;
Habitat: Moist hillsides, usually along streams.
Origin: Native
Flowers: May - June
Growth Duration: Perennial
Rubus nivalis – snow dwarf bramble, snow dewberry
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to southwest Oregon, also in west-central Idaho.
Habitat: Open to deeply shaded, usually moist areas in the mountains at middle elevations.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to southwest Oregon, also in west-central Idaho.
Habitat: Open to deeply shaded, usually moist areas in the mountains at middle elevations.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Rubus parviflorus – thimbleberry
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, the Rocky Mountains, and Great Lakes region.
Habitat: Forest openings and edge, thickets, meadows, and riparian corridors from sea level to the subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, the Rocky Mountains, and Great Lakes region.
Habitat: Forest openings and edge, thickets, meadows, and riparian corridors from sea level to the subalpine.
Origin: Native
Flowers: April-July
Growth Duration: Perennial
Rubus pedatus – strawberry bramble, strawberry-leaf raspberry
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Alberta, Idaho, and Montana.
Habitat: Moist areas, open banks to dense forests, near sea level to timberline
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Alberta, Idaho, and Montana.
Habitat: Moist areas, open banks to dense forests, near sea level to timberline
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Rubus pensilvanicus – Pennsylvania blackberry
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California also occurring in western Idaho; otherwise in central and eastern North America, where native.
Habitat: Damp slopes, dry forests, and thickets.
Origin: Introduced
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California also occurring in western Idaho; otherwise in central and eastern North America, where native.
Habitat: Damp slopes, dry forests, and thickets.
Origin: Introduced
Flowers: May-July
Growth Duration: Perennial
Rubus pubescens – dwarf red blackberry, dwarf red blackberry raspberry, red raspberry
Distribution: Occurring east of the Cascades crest in northern Washington; Alaska to Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Stream banks and moist woods to clearings where moderately dry, middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in northern Washington; Alaska to Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
Habitat: Stream banks and moist woods to clearings where moderately dry, middle elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Rubus spectabilis – salmonberry
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, disjunct in northern Idaho.
Habitat: Lowland moist woods and swamps to middle elevations in the mountains.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, disjunct in northern Idaho.
Habitat: Lowland moist woods and swamps to middle elevations in the mountains.
Origin: Native
Flowers: March-June
Growth Duration: Perennial
Rubus ulmifolius – elm-leaf blackberry
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California and Nevada; also in New Jersey.
Habitat: Fields, thickets, forest edge, and other disturbed areas.
Origin: Introduced Europe and northern Africa
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; southwestern British Columbia to California and Nevada; also in New Jersey.
Habitat: Fields, thickets, forest edge, and other disturbed areas.
Origin: Introduced Europe and northern Africa
Flowers: May-July
Growth Duration: Perennial
Rubus ursinus – Pacific blackberry, trailing blackberry, dewberry, Douglasberry
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana.
Habitat: Open to fairly dense woodlands, thickets, and balds, sea level to middle elevations in the mountains; common in logged areas.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana.
Habitat: Open to fairly dense woodlands, thickets, and balds, sea level to middle elevations in the mountains; common in logged areas.
Origin: Native
Flowers: April-August
Growth Duration: Perennial
Rubus vestitus – European blackberry
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to Oregon, also reported from Idaho.
Habitat: Roadsides and waste ground.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to Oregon, also reported from Idaho.
Habitat: Roadsides and waste ground.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial
Sanguisorba menziesii – Menzies' burnet, small-head burnet
Distribution: Occurring west of the Cascades crest on the Olympic Peninsula in Washington; Alaska to Washington.
Habitat: Peatlands, wet meadows, shores, generally at middle elevations.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest on the Olympic Peninsula in Washington; Alaska to Washington.
Habitat: Peatlands, wet meadows, shores, generally at middle elevations.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Sanguisorba officinalis – garden burnet, great burnet
Distribution: Occurring west of the Cascades crest on the Olympic Peninsula in Washington; Alaska to California; introduced in eastern North America; circumboreal.
Habitat: Peatlands, wet meadows, marshes, shorelines, and wet forests from the lowlands to subalpine.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest on the Olympic Peninsula in Washington; Alaska to California; introduced in eastern North America; circumboreal.
Habitat: Peatlands, wet meadows, marshes, shorelines, and wet forests from the lowlands to subalpine.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Sanguisorba stipulata – Sitka burnet
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Idaho.
Habitat: Wet places at middle elevations in the mountains.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Oregon, east to Idaho.
Habitat: Wet places at middle elevations in the mountains.
Origin: Native
Flowers: July-August
Growth Duration: Perennial
Sibbaldia procumbens – creeping-glow-wort, creeping sibbaldia
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, and east across most of Canda to the Atlantic Coasl.
Habitat: Open, dry to moist subalpine and alpine slopes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, and east across most of Canda to the Atlantic Coasl.
Habitat: Open, dry to moist subalpine and alpine slopes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Sorbus aucuparia – European mountain-ash
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to the Atlantic Coast.
Habitat: Forest edge, thickets, shorelines, and other generally moist areas where often disturbed.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to Oregon, east to the Atlantic Coast.
Habitat: Forest edge, thickets, shorelines, and other generally moist areas where often disturbed.
Origin: Introduced from Europe
Flowers: May-June
Growth Duration: Perennial
Sorbus hybrida – Swedish mountain-ash, Swedish service-tree
Distribution: Occurring west of the Cascades crest in lowland western Washington.
Habitat: Shoreline ledges and thickets at low elevations.
Origin: Introduced
Flowers: May-June
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in lowland western Washington.
Habitat: Shoreline ledges and thickets at low elevations.
Origin: Introduced
Flowers: May-June
Growth Duration: Perennial
Sorbus scopulina – Greene's mountain ash, Cascade mountain-ash, western mountain-ash
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Open areas, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Open areas, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August
Growth Duration: Perennial
Sorbus sitchensis – Sitka mountain-ash
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to northern California, east to Alberta, Idaho, and Montana.
Habitat: Forest openings at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to northern California, east to Alberta, Idaho, and Montana.
Habitat: Forest openings at mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• var. grayi – Sitka mountain-ash
• var. sitchensis – Sitka mountain-ash
Spiraea douglasii – Douglas's spiraea, hardhack steeplebush
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana and Colorado.
Habitat: Swamps, lake margins and damp meadows, from sea level to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana and Colorado.
Habitat: Swamps, lake margins and damp meadows, from sea level to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
• var. douglasii – Douglas's spiraea
• var. menziesii – Menzies's spiraea
Spiraea ×hitchcockii – Hitchcock's spiraea
Distribution: Occurring in the Cascades in Washington; northern Washington to Oregon.
Habitat: Forest openings at low to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring in the Cascades in Washington; northern Washington to Oregon.
Habitat: Forest openings at low to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Spiraea lucida – shiny-leaf spiraea, shinyleaf spiraea
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Saskatchewan and Wyoming.
Habitat: Stream banks and open to wooded areas, sea level to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Saskatchewan and Wyoming.
Habitat: Stream banks and open to wooded areas, sea level to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Spiraea ×pyramidata – pyramid spiraea
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho and Montana.
Habitat: Somewhat dry forest openings, from the lowlands to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho and Montana.
Habitat: Somewhat dry forest openings, from the lowlands to the subalpine.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Spiraea splendens – rosy spiraea, subalpine spiraea
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Idaho, Montana, and Wyoming.
Habitat: Moist forest openings and rocky slopes, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada, east to Alberta, Idaho, Montana, and Wyoming.
Habitat: Moist forest openings and rocky slopes, middle to high elevations in the mountains.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
