[wikipedia] Flower color variation: The tubular, wide-faced flower is usually magenta or purple[5] with two yellow stripes in the mouth, but is occasionally all yellow. (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).
