Trifolium
clover, trefoil
Specimens
Photos
Origin: Native
Conservation Status: Not of concern
Description:
[none provided]
Accepted Name:
Trifolium
Synonyms & Misapplications:
(none provided)
Species in Trifolium:
- Trifolium albopurpureum – Rancheria clover Known from only a few scattered locations in Klickitat County in Washington; south-central Washington to California, east to Arizona.
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Trifolium arvense – rabbitfoot clover, hare's foot
Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana, further eastward across the northern U.S. and southern Great Plains and Canada to eastern North America. -
Trifolium aureum – golden clover, greater hop clover, yellow clover Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming; also occurring in most of eastern North America.
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Trifolium bifidum – notch-leaf clover, Pinole clover Occurring in Klickitat County in Washington; south-central Washington to California.
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var. decipiens – notchleaf clover, Pinole clover Occurring in Klickitat County in Washington; south-central Washington to California.
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Trifolium campestre – field clover, hop clover Occurring chiefly west of the Cascades in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
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Trifolium cernuum – nodding clover Known from the Olympic Peninsula in Washington; Washington to California.
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Trifolium ciliolatum – foothill clover, tree clover Occurring east of the Cascades crest in south-central Washington; south-central Washington to California.
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Trifolium cyathiferum – bowl clover, cup clover Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to western Montana and Nevada.
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Trifolium depauperatum – poverty clover Occurring west of the Cascades crest in northwestern Washington; also in Gulf Islands and Vancouver Islands in British Columbia, otherwise southwestern Oregon to southern California.
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var. depauperatum – poverty clover Occurring west of the Cascades crest in northwestern Washington; also in Gulf Islands and Vancouver Islands in British Columbia, otherwise southwestern Oregon to southern California.
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Trifolium dichotomum – branched clover Occurring west of the Cascades crest in the San Juan Islands in Washington; southern Vancouver Island, Gulf Islands, and San Juan Islands, otherwise Willamette Valley, Oregon to California.
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Trifolium douglasii – Douglas's clover Occurring east of the Cascades crest in eastern and southeastern Washington; eastern Washington to east-central Oregon, east to eastern Idaho.
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Trifolium dubium – least hop clover, suckling clover Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across much of North America to the Atlantic Coast.
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Trifolium eriocephalum – woolly-head clover Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California, east to Montana, Utah, and Nevada.
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var. arcuatum – woolly-head clover Occurring in Yakima County and the Blue Mountains in Washington; southern Washington to Oregon, east to western Montana.
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var. eriocephalum – woolly-head cloover Occurring on both sides of the Cascades crest in south-central Washington; south-central Washington to California.
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Trifolium fragiferum – strawberry clover Occurring in scattered locations on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Great Plains, also in eastern North America.
- Trifolium fucatum – bull clover, sour clover Known from a historic collection in Seatlle and best considered not part of the flora;
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Trifolium glomeratum – clustered clover Occurring west of the Cascades crest in the Puget Trough lowlands; southwestern British Columbia to California.
- Trifolium gracilentum – slender clover Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California, where native, and east to Arizona.
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Trifolium hirtum – rose clover Occurring in the Columbia River Gorge in Washington; Washington to California, also in the southeastern U.S.
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Trifolium hybridum – alsike clover Occurring on both sides of the Cascades crest throughout much of Washington; Alaska to California, east across most of North America to the Atlantic Coast.
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Trifolium incarnatum – crimson clover Occurring west of the Cascades crest in the Puget Trough lowlands; British Columbia to California, east across much of North America to the Atlantic Coast.
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Trifolium latifolium – twin clover Occurring east of the Cascades crest in far eastern and southeastern Washington; eastern Washington to northeastern Oregon, east to western Montana.
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Trifolium longipes – long-stalked clover Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
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var. longipes – long-stalked clover Endemic to the Cascades Mountains in Washington.
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var. multiovulatum – long-stalked clover Occurring in the Olympics and Cascades mountains in Washington; Washington to northwest Oregon.
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var. multipedunculatum – long-stalked clover Occurring in the Cascades Mountains in Washington; Washington to California.
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Trifolium macrocephalum – big-head clover, large-head clover Occurring east of the Cascades crest in Washington; Washington, south through eastern Oregon, east to Idaho and Nevada.
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Trifolium microcephalum – small-head clover Distributed widely throughout Washington; British Columbia to Baja California, east to the Rocky Mountains.
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Trifolium microdon – thimble clover, Valparaiso clover Occurring chiefly west of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California; also in South America.
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Trifolium oliganthum – few-flowered clover Occurring west of the Cascades crest in Washington; southwestern British Columbia to California.
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Trifolium plumosum – plumed clover Occurring in the southeastern region in Washington; southeastern Washington to northeastern Oregon, east to adjacent Idaho.
- var. amplifolium – plumed clover Occurring in the southeastern region in Washington; southeastern Washington to northeastern Oregon, east to adjacent Idaho.
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var. plumosum – plumed clover Occurring in the southeastern region in Washington; southeastern Washington to northeastern Oregon.
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Trifolium pratense – red clover Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
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Trifolium repens – Dutch clover, white clover Widely distributed throughout Washington; Alaska to California, east across North America to the Atlantic Coast.
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Trifolium resupinatum – reversed clover Occurring east of the Cascades crest in eastern Washington; eastern Washington to California, also in eastern North America.
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Trifolium retusum – teasel clover Occurring west of the Cascades crest in the Puget Trough region in Washington; also occurring in southern Oregon and northern California.
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Trifolium striatum – knotted clover Occurring in lowlands west of the Cascades crest in Washington; Washington to California, also in eastern North America.
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Trifolium subterraneum – burrowing clover, subterranean clover, subterranean trefoil Occurring west of the Cascades crest in Washington; British Columbia to California; also in the southeastern U.S.
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Trifolium suffocatum – suffocated clover Occurring west of the Cascades crest in Washington; Washington and in California
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Trifolium thompsonii – Thompson's clover Occurring east of the Cascades crest, where endemic to Chelan and Douglas counties in Washington.
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Trifolium variegatum – white-tip clover Widely distributed throughout much of Washington; Alaska south to California, east to Montana, Wyoming, Utah, and Arizona.
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Trifolium vesiculosum – arrow-leaf clover Occurring in a few locations west of the Cascades crest in lowland western Washington; Washington to California; also in the south-central and southeastern U.S.
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Trifolium willdenovii – sand clover, tomcat clover Occurring west of the Cascades crest and east along the Columbia River in Washington; British Columbia to California.
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Trifolium wormskioldii – cow clover, salt marsh clover Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho, Colorado, and New Mexico.
Additional Resources:
PNW Herbaria: Specimen records of Trifolium in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Trifolium checklist entry
OregonFlora: Trifolium information
E-Flora BC: Trifolium atlas page
CalPhotos: Trifolium photos
900 photographs:
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