Calflora, a 501c3 non-profit
Distribution by County   4045    
Helianthus exilis  A. Gray

(not an active name)
Serpentine sunflower
Helianthus exilis is an annual herb that is native to California, and endemic (limited) to California.
also called Helianthus bolanderi
Record Count by County

Butte: 1 Mariposa: 24 Shasta: 3 Stanislaus: 1
Colusa: 1 Mendocino: 3 Sierra: 1 Tehama: 24
Glenn: 1 Napa: 32 Siskiyou: 7 Trinity: 10
Lake: 141 Santa Clara: 27 Sonoma: 1 Tuolumne: 1

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/16/2026).