[wikipedia] Host plant for butterfly larvae, Native American medicinal plant: Diplacus aurantiacus is an important host plant for the larvae of the common buckeye butterfly (Junonia coenia) and the variable checkerspot (Euphydryas chalcedona),[6] despite a phenolic resin in the leaves which deter its feeding.[7] This resin also helps the plant retain water in dry environments.[7]
Traditional Native American medical plant
The Miwok and Pomo Native Americans used the plant to treat minor ailments such as sores, burns, diarrhea, and eye irritation. They used the colorful flowers for decorative purposes.[10] (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
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[web application]. 2025.The Calflora Database
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https://www.calflora.org/(Accessed: 03/30/2025).