Rock buckwheat

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 from northeastern California to Idaho, where it is a common member of several habitat types, such as sagebrush.
Rock Buckwheat identifying characteristic -rounded clump with bright yellow flowers  Eriogonum sphaerocephalum,Geotagged,Spring,United States

Appearance

This is a small shrub or subshrub up to half a meter tall and wide, growing from a caudex and producing erect flowering stems. The woolly leaves are widely lance-shaped to somewhat oval and 1 to 4 centimeters 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.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderCaryophyllales
FamilyPolygonaceae
GenusEriogonum
SpeciesE. sphaerocephalum