''Trifolium siskiyouense'', the Siskiyou clover, is a

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 ...

species

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the

Klamath Mountains The Klamath Mountains are a rugged and lightly populated mountain range in northwestern California and southwestern Oregon in the western United States. As a mountain system within both the greater Pacific Coast Ranges and the California Coast R ...

in the western United States.

Distribution

The plant species is native to northwestern

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 ...

and southwestern

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

, in the Klamath Mountains. It is reported from only 5 counties: Shasta and Siskiyou Counties in California; and Josephine, Douglas and Jackson Counties in Oregon. The

type specimen In biology, a type is a particular wikt:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to ancho ...

was collected in 1904 near

Grants Pass Grants Pass is a city in and the county seat of Josephine County, Oregon, United States. The city is located on Interstate 5 in Oregon, Interstate 5, northwest of Medford, Oregon, Medford, along the Rogue River (Oregon), Rogue River. The populatio ...

in Josephine County,

. Part of its range is protected within the Klamath National Forest. The plant grows in wet mountain meadows at elevations of .

Description

''Trifolium siskiyouense''is a glabrous, perennial herb with thickened roots but no rhizomes. Leaves are trifoliate with lanceolate stipules; leaflets are elliptic to oblanceolate, up to long. Flowers are white to cream-colored.Jepson Flora Project
/ref>Zohary, M. & D. Heller. 1984. Genus ~''Trifolium''~ i–x, 1–606. Israel Academy of Sciences and Humanities, Jerusalem.

References

siskiyouense Flora of California Flora of Oregon Flora of the Klamath Mountains Natural history of the California Coast Ranges Natural history of Siskiyou County, California ~ Critically endangered flora of California Flora without expected TNC conservation status {{Trifolieae-stub