[Wikipedia] Single Species, Etymology: There is only one known species Amphipappus fremontii. It is a shrub up to 60 cm (23.5 in) tall. The species takes its scientific epithet, fremontii from John C. Frémont,[5] and is known commonly by the names chaffbush or eytelia (in honor of artist Carl Eytel). (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).