[Wikipedia] Range: It is endemic to California, where it grows in the foothills of the southern Cascade Range and the Sierra Nevada. Its primary range extends from Shasta County to Amador County with additional populations in Mariposa 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: 03/31/2025).
