Arnica sp.
(c) Jim Morefield, some rights reserved (CC BY) · licence
Family: Asteraceae · Type: Perennial · Variable; species dependent
Arnica sp. is a non-native California perennial in the Asteraceae family.
How to tell it apart
vs Senecio: Senecio has alternate leaves; Arnica leaves opposite in pairs - check leaf arrangement first; vs Wyethia: Wyethia has large basal leaves and many-ranked bracts; Arnica stem leaves opposite, bracts in 2 series; vs Packera: Packera has alternate leaves; Arnica leaves opposite in pairs up stem; vs Kyhosia: Kyhosia has alternate leaves; Arnica leaves opposite - check where leaves attach to stem; vs Helianthella: Helianthella leaves mostly alternate; Arnica leaves strictly opposite in pairs
Frequently asked questions
Is Arnica sp. native to California?
No. Arnica sp. is not native to California (recorded as variable; species dependent).
What plant family does Arnica sp. belong to?
Arnica sp. is in the Asteraceae family, genus Arnica.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CalPhotos
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.