[powo.science.kew.org] Range, Habitat: The native range of this species is California to Arizona and NW. Mexico. It is an annual and grows primarily in the desert or dry shrubland biome. (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: 03/28/2025).
