Genus = Trifolium,
Displaying matches 1 - 27 of 27.
Distribution: Known from only a few scattered locations in Washington; Washington south to California, east to Arizona.
Habitat: Coastal bluffs to forest openings at middle elevations.
(= Trifolium arvense in Flora of the Pacific Northwest)
Erect, pubescent annual, the 1-several stems 1-4 dm. tall, freely-branched.
Distribution: Introduced chiefly west of the Cascades in Washington; British Columbia south to Oregon.
Habitat: Uncommon in waste places and roadsides.
(= Trifolium agrarium in Flora of the Pacific Northwest)
Pubescent to glabrous annual, with usually several erect or ascending stems 2-5 dm. tall.
Distribution: Scattered locations on both sides of the Cascades in Washington; Alaska to California, east to Montana and Wyoming; also occurring most of eastern North America.
Habitat: Roadsides, railways and waste places.
(= Trifolium bifidum var. decipiens in Flora of the Pacific Northwest)
(= Trifolium procumbens in Flora of the Pacific Northwest)
Pubescent to glabrous annual, with usually several procumbent to ascending stems 1-3 dm. tall.
Distribution: Distributed chiefly west of the Cascades in Washington; distributed widely throughout North America.
Habitat: Wastelands, roadsides, meadows, and other disturbed areas.
(= Trifolium ciliolatum in Flora of the Pacific Northwest)
Mostly glabrous annual with several decumbent to erect stems 1.5-5 dm. long.
Distribution: Southern Washington south to Baja California west of the Cascades and Sierra Nevada, at elevations of up to several thousand feet in the south.
Habitat: Wet meadows to rather dry, sandy soil.
(= Trifolium cyathiferum in Flora of the Pacific Northwest)
Glabrous annual, the stems 1-5 dm. long, ascending to erect.
Distribution: Occurring chiefly east of the Cascades in Washington; British Columbia south to California.
Habitat: Uncommon in wet meadows to fairly dry, sandy soil, at moderate elevations.
(= Trifolium depauperatum in Flora of the Pacific Northwest)
Pod 1-seeded, longer than the attached style.
Distribution: Central Oregon to southern California; sporadic and possibly always introduced in Washington and Vancouver Island, British Columbia.
Habitat: Open areas at low elevations.
(= Trifolium dubium in Flora of the Pacific Northwest)
Sparsely pubescent annual, the stems 1-several, 1-5 dm. long, prostrate or ascending to erect.
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Disturbed areas including forest openings, meadows, wastelots, roadsides, and lawns.
(= Trifolium eriocephalum in Flora of the Pacific Northwest)
Villous-pubescent perennial from a thick taproot with a branched crown, the 1-several stems 2-6 dm. tall.
Distribution: Cascades from southern Washington to Northern California, east to Nevada, Utah and Montana
Habitat: Moderate to mid-elevations in the mountains
(= Trifolium fragiferum in Flora of the Pacific Northwest)
Pubescent perennial from rhizomes, the stems 5-30 cm. long, decumbent to creeping and rooting at the nodes.
Distribution: Introduced and occasionally established in Washington, Oregon and Idaho; more common in eastern United States.
Habitat: Waste places, disturbed soil.
(= Trifolium hybridum in Flora of the Pacific Northwest)
Sparsely pubescent perennial, the stems several, ascending to erect, sometimes stolonous.
Distribution: Introduced in Western United States
Habitat: Near cultivated fields and roadsides
(= Trifolium incarnatum in Flora of the Pacific Northwest)
Rank-growing, villous-pubescent annual, the 1-several stems 2-8 dm. tall, erect and nearly simple.
Distribution: Introduced, occasionally established in western Washington and Oregon.
Habitat: Wasteland, pastures, disturbed soil.
(= Trifolium latifolium in Flora of the Pacific Northwest)
Rhizomatous perennial from a thick taproot, the several stems 1-4 dm. tall, moderately appressed-pubescent.
Distribution: Wallowa County, Oregon to Missoula, Montana.
Habitat: Moist meadows to rocky ridges.
(= Trifolium longipes in Flora of the Pacific Northwest)
Pubescent perennial from a taproot with a branched crown, the stems 5-30 cm. tall, decumbent and often trailing and stoloniferous.
Distribution: Common on both sides of the Cascades in Washington; British Columbia south to California, east to the Rocky Mountains.
Habitat: Meadows and valleys, lower mountains to subalpine slopes.
(= Trifolium macrocephalum in Flora of the Pacific Northwest)
Pubescent perennial from a thick root and rhizomes, the stems erect, 1-3 dm. tall.
Distribution: Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
Habitat: Shrub-steppe, sagebrush desert and ponderosa pine woodlands.
(= Trifolium microcephalum in Flora of the Pacific Northwest)
Villous annual, the stems 1-7 dm. long, prostrate to erect.
Distribution: Distributed widely throughout Washington; British Columbia to Baja California, east to Montana and Arizona.
Habitat: Moist meadows, sandy riverbanks and drier hillsides, coastal to mid-elevations in the mountains.
(= Trifolium microdon in Flora of the Pacific Northwest)
Pubescent annual, the stems 1-5 dm. long, decumbent to erect.
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California.
Habitat: In meadows or on rocky or sandy soil at low elevations.
(= Trifolium oliganthum in Flora of the Pacific Northwest)
Mostly glabrous annual, the 1-many stems 5-20 cm. long, decumbent to erect.
Distribution: West of the Cascades, from southwest British Columbia to California.
Habitat: Meadowland to dry, rocky soil at low elevations.
(= Trifolium pratense in Flora of the Pacific Northwest)
Soft-hairy, short-lived perennial from a taproot, the several stems 3-10 dm. tall.
Distribution: Introduced throughout the United States; common forage crop in the Pacific Northwest
Habitat: Escaped from cultivation; found along mountain trails where horses have been used
(= Trifolium repens in Flora of the Pacific Northwest)
Mostly glabrous perennial, the stems 1-6 dm. long, creeping and stolonous to erect.
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Established in a variety of native habitats, such as mountain meadows
(= Trifolium subterraneum in Flora of the Pacific Northwest)
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to California; southeastern U.S.
Habitat: Pastures, prairies, roadsides and other open, disturbed areas at low elevations.
(= Trifolium thompsonii in Flora of the Pacific Northwest)
Gray-villous perennial from a taproot, the several stems erect, 2-7 dm. tall.
Distribution: Swakane Canyon, Chelan County, Washington, north to Entiat Valley, and in Douglas County opposite Swakane Canyon.
Habitat: Common on dry, grassy hillsides just below the ponderosa pine woodlands
(= Trifolium variegatum in Flora of the Pacific Northwest)
Glabrous annual, the 1-several stems 1-6 dm. long, prostrate to erect.
Distribution: Widely distributed throughout much of Washington; Alaska south to California, east towards the Rocky Mountains.
Habitat: Dry, sandy soil to moist meadows.
Distribution: Occurring in a few locations in lowland western Washington; Washington south to California; also in the south-central and southeastern U.S.
Habitat: Disturbed areas in including wastelots, roadsides, and fields.
(= Trifolium tridentatum in Flora of the Pacific Northwest)
Glabrous annual, the stems 1-7 dm. long, spreading to erect.
Distribution: West side of the Cascades and east along the Columbia River in Washington; British Columbia south to California.
Habitat: Grassy hillsides, balds, prairies and meadows at low to moderate elevations.
(= Trifolium wormskjoldii in Flora of the Pacific Northwest)
Glabrous, tap-rooted perennial, decumbent-based and often rhizomatous, stems 1-8 dm. long.
Distribution: Alaska to California, east to Montana and New Mexico; more common west of the Cascades in Washington
Habitat: Costal dunes to moist meadows and stream banks at low to moderate elevations in the mountains
