[Wikipedia] Range: It is native to the Klamath Mountains of northern California and southern Oregon, United States, and it is also known from Sierra Valley to the southeast of that range. (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: 03/29/2025).
