[Wikipedia] Range, Habitat: The plant is native to California coastal sage and chaparral habitats, along the coasts in Southern California and into Baja California, Mexico.
It is found on all the Channel Islands, source of its common names. It is also commonly found in the Peninsular Ranges, Transverse Ranges, and Outer Southern California Coast Ranges. (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: 03/30/2025).