[hortipedia.com] Naming: Erigeron filifolius was first described and the name validly published by William Jackson Hooker but was revised and reclassified by Thomas Nuttall in 1840. (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: 04/03/2025).
