''Trifolium cyathiferum'' is a species of

clover Clovers, also called trefoils, are plants of the genus ''Trifolium'' (), consisting of about 300 species of flowering plants in the legume family Fabaceae originating in Europe. The genus has a cosmopolitan distribution with the highest diversit ...

known by the common names cup clover and bowl clover.Calflora
/ref>

Distribution

This species occurs in western North America, its distribution extending from

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

and the

Yukon Yukon () is a Provinces and territories of Canada, territory of Canada, bordering British Columbia to the south, the Northwest Territories to the east, the Beaufort Sea to the north, and the U.S. state of Alaska to the west. It is Canada’s we ...

, through the

Pacific Northwest The Pacific Northwest (PNW; ) is a geographic region in Western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

Utah Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...

, and

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

. As an example occurrence, it is found in the

California Coast Ranges The Coast Ranges of California span from Del Norte County, California, Del Norte or Humboldt County, California, south to Santa Barbara County, California, Santa Barbara County. The other three coastal California mountain ranges are the Trans ...

in such places as Ring Mountain, California, where it is found in association with tomcat clover.Hogan, C. M. 2008.
''Ring Mountain'', The Megalithic Portal
ed. A. Burnham. It usually occurs in spring-moist valleys,

chaparral Chaparral ( ) is a shrubland plant plant community, community found primarily in California, southern Oregon, and northern Baja California. It is shaped by a Mediterranean climate (mild wet winters and hot dry summers) and infrequent, high-intens ...

, and forest habitats, below in elevation.

Description

''Trifolium cyathiferum'' is a low growing annual plant. Jepson
/ref> The inflorescence is many flowered and bowl shaped. Flowers are white to yellow with pink tips. The bloom period is May to August.

References

External links

Calflora Database: ''Trifolium cyathiferum'' (Bowl clover, Cup clover) Jepson Manual eFlora (TJM2) treatment of ''Trifolium cyathiferum''USDA Plants Profile for ''Trifolium cyathiferum'' (cup clover)University of Washington Burke MuseumUC CalPhotos gallery: ''Trifolium cyathiferum''
cyathiferum Flora of the Northwestern United States Flora of Western Canada Flora of Alaska Flora of California Flora of Nevada Plants described in 1827 {{Trifolieae-stub