Large boykinia, Mountain boykinia, Stream boykinia
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Boykinia major is a perennial herb that is native to California, and also found elsewhere in western North America.
[Wikipedia] Range, Habitat: It is native to the western United States from California to Montana, where it grows in shady forest understory and wet mountain meadows. (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: 05/15/2025).