[floranorthamerica.org] Limited Range, Threats: Castilleja mendocinensis is a coastal plant from Mendocino County, California, northward to Curry County, Oregon. Its close relative, C. latifolia, occurs in similar habitats south of San Francisco Bay. There is one known population in Oregon, and a number of California localities are threatened by coastal development. (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).