[oregonflora.org] Habitat: Gravelly or serpentine-derived soil, grasslands, chaparral, forest openings. Flowering May to Jul. 400 to 1400 m. Sisk. CA. Native. (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).