''Eriogonum siskiyouense'' is a rare species of wild buckwheat known by the common name Siskiyou buckwheat.

Distribution

The plant is

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 far northern

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 ...

. It is known only from the area between

Mount Eddy Mount Eddy is the highest peak of the Trinity Mountains, a mountain range of the Klamath Mountains System, located in Siskiyou County, and Trinity County in northern California. The mountain is in the Mount Eddy RNA, a Research Natural Area ...

in the Trinity Mountains and the Scott Mountains, around the border of

Siskiyou County Siskiyou County (, ) is a county in the northernmost part of the U.S. state of California. As of the 2020 census, the population was 44,076. Its county seat is Yreka and its highest point is Mount Shasta. It falls within the Cascadia bioregion ...

and Trinity County. Both ranges are in the southern

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 ...

System. It is a member of the local serpentine soils flora, found at elevations of in yellow pine forest habitats within the Shasta-Trinity National Forest.

Description

''Eriogonum siskiyouense'' is perennial herb forms mats up to wide around a woody caudex. It bears clusters of small rounded to oval leaves each under a centimeter long and coated in gray woolly fibers at least on the undersides. The flowering stem arising from the caudex has a whorl of two to four leaflike bracts around the middle and is otherwise naked but for a coat of woolly hairs. Atop the scape are the bright yellow flowers, which are usually arranged in a spherical cluster.

External links

Calflora Database: ''Eriogonum siskiyouense'' (Siskiyou buckwheat)Jepson Manual eFlora (TJM2) treatment of ''Eriogonum siskiyouense''U.C. Photos gallery of ''Eriogonum siskiyouense''
siskiyouense Endemic flora of California Flora of the Klamath Mountains Natural history of Siskiyou County, California Natural history of Trinity County, California ~ ~ Plants described in 1898 Flora without expected TNC conservation status {{Polygonaceae-stub