[Wikipedia] Range: Erigeron lassenianus is endemic to the high mountains of northern California, from close to the Oregon border south as far as northeastern Mendocino County and El Dorado 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: 04/02/2025).
