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

clover Clover or trefoil are common names for plants of the genus ''Trifolium'' (from Latin ''tres'' 'three' + ''folium'' 'leaf'), consisting of about 300 species of flowering plants in the legume or pea family Fabaceae originating in Europe. The genus ...

species

endemic Endemism is the state of a species being found 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 found else ...

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 ...

in the western United States.

Distribution

The plant species is native to northwestern

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

and southwestern

Oregon Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. T ...

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

Douglas Douglas may refer to: People * Douglas (given name) * Douglas (surname) Animals * Douglas (parrot), macaw that starred as the parrot ''Rosalinda'' in Pippi Longstocking *Douglas the camel, a camel in the Confederate Army in the American Civi ...

and Jackson Counties in Oregon. The

type specimen In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes th ...

was collected in 1904 near

Grants Pass Grants Pass is 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 population was 39,189 ...

in Josephine County,

. Part of its range is protected within the

Klamath National Forest Klamath National Forest is a national forest, in the Klamath Mountains and Cascade Range, located in Siskiyou County in northern California, but with a tiny extension (1.5 percent of the forest) into southern Jackson County in Oregon. The fores ...

. 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