[wikipedia] Taxonomy, Flowers: Taxonomy
This plant has a chromosome count of 2n = 20. It is known to hybridize with Diplacus ×australis. It is suspected to be one of the parents of D.×australis, along with D. longiflorus.
Flowers.
The type specimen was collected from San Diego in 1836 by Thomas Nutall. (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: 03/31/2025).