[Wikipedia] Subspecies Information: Subspecies, which generally do not occur together, include:
Castilleja subinclusa ssp. franciscana - Franciscan paintbrush -endemic to the coastline surrounding the San Francisco Bay Area.[3]
Castilleja subinclusa ssp. subinclusa - long leaf paintbrush, longleaf Indian paintbrush - in the Transverse Ranges, Inner South California Coast Ranges, Peninsular Ranges, and Southern Sierra Nevada.[4] (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).