Eriogonum sphaerocephalum

Eriogonum sphaerocephalum is a species of wild buckwheat known by the common name rock buckwheat. It is native to the western United States primarily east of the crest of the Cascade Range in Washington and Oregon to Idaho and from southern Oregon and northern California to northern Nevada. It is a common member of desert, rocky and sagebrush steppe habitats. "Eriogonum sphaerocephalum" is found over a wide range of elevations, but is most common between .
Description.
"Eriogonum sphaerocephalum" is a small shrub or subshrub up to tall and wide, growing from a caudex and producing erect flowering stems. The woolly leaves are widely lance-shaped to somewhat oval and long, and form basal rosettes around the caudex.
The inflorescence arises on a stalk and bears many yellow flowers in a head-like cluster or umbel.
Varieties.
There are several varieties of this species: