Fritillaria pluriflora is a perennial herb (bulb) that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
[Wikipedia] Limited Range: Fritillaria pluriflora is a rare California fritillary known as adobe lily. This wildflower is mainly limited to northern California. It grows in adobe clay soils of the Coast Ranges and low hills in the Central Valley from Tehama and Mendocino Counties south to Solano County. (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: 03/30/2025).