[Wikipedia] Limited Range: It is endemic to California, where it is known only from the foothills of the southernmost Cascade Range and adjacent northernmost Sierra Nevada. It grows in moist areas, such as seeps. (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: 04/01/2025).
one or more occurrences