[Wikipedia] Limited Range, Habitat: Phacelia eisenii is a species of phacelia known by the common name Eisen's phacelia. It is endemic to California, where it occurs only in the Sierra Nevada and its foothills, as well as the adjacent Tehachapi Mountains. It grows in mountain habitat such as coniferous forests. (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: 04/03/2025).
