Vascular Plants

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Scientific names beginning with U:
6 genera
22 species, 4 subspecies and varieties
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Ulex europaeuscommon gorse
Distribution: Occurring west of the Cascades crest in Washington; British Columbia south to California; also in the eastern U.S.
Habitat: Disturbed areas at low elevation, often near or along roadsides.
Ulmus americanaAmerican elm
Distribution: Occurring on both sides of the Cascades crest in Washington; native to eastern and central North America, though escaped from cultivation elsewhere.
Habitat: Woodlands, pastures, old fields at low to moderate elevations.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus procerafield elm
Distribution: Occurring chiefly west of the Cascades crest in Washington, but also known from Kittitas County. Known from states scattered in southwestern, central, and northeastern U.S.
Habitat: Riparian areas, often where disturbed.
Ulmus pumilaSiberian elm
Distribution: Occurring chiefly east of the Cascades crest in Washington; introduced over much of the North America, where commonly escaping and naturalizing.
Habitat: Roadsides, fence rows, waste areas.
Umbellularia californicaCalifornia bay
Uropappus lindleyilinearleaf microseris, silver puffs, Lindley's false silverpuffs
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to California, east to Idaho, south to Texas.
Habitat: Open hillsides, forest openings, from low to mid-elevations.
Urtica dioica
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: In deep, rich soil or near moisture, sagebrush deserts, shady lowlands and mountain slopes, sea level to subalpine.
ssp. dioica – stinging nettle
ssp. gracilis – stinging nettle
ssp. holosericea – stinging nettle
Urtica urensburning nettle
Distribution: Introduced sparsely in western Washington; distributed throughout much of North America except parts of the Midwest and Intermountain West.
Habitat: Moist, disturbed soil.
Utricularia cornutahorned bladderwort
Utricularia gibbahumped bladderwort, swollen-spurred bladderwort
Distribution: Known from west of the Cascades in Washington; British Columbia south to California; central and eastern North America.
Habitat: Emergent aquatic in lakes and ponds.
Utricularia inflataswollen bladderwort
Distribution: Known from west of the Cascades in Washington; Gulf Coast and southeastern U.S.
Habitat: Emergent aquatic in lakes and ponds.
Utricularia intermediaflat-leaved bladderwort, mountain bladderwort
Distribution: Chiefly west of the Cascades in Washington; circumboreal; widely distributed throughout North America except in Central Plains, Gulf Coast, and Southeast.
Habitat: Shallow, standing or slowly mooving water.
Utricularia minorlesser bladderwort
Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Atlantic Coast north of Virginia.
Habitat: Shallow, standing or slowly moving water.
Utricularia ×ochroleucadwarf bladderwort
Distribution: Known only from Klickitat County in Washington, but likely occurring elsewhere; Alaska to California, east across northern half of North America to Greenland; Eurasia.
Habitat: Ponds and lakes in shallow to somewhat deeper waters.
Utricularia vulgaris
Distribution: Widely distributed throughout Washington; widely distributed throughout North America; circumboreal
Habitat: Lakes, ponds, swamps, and slow-moving streams.
ssp. macrorhiza – bladderwort, common bladderwort, greater bladderwort