Eriogonum prociduum is a perennial herb that is native to California, and also found in Nevada and Oregon.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
[Wikipedia] Range, Habitat: Eriogonum prociduum is a species of wild buckwheat known by the common name prostrate buckwheat. It is native to the western Great Basin of the United States in the region where Oregon meets California and Nevada, especially the Modoc Plateau, where it grows in exposed volcanic soils. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/28/2025).