Calflora, a 501c3 non-profit
Distribution by County   8118    
Trillium angustipetalum  (Torr.) J. D. Freeman
Narrow petaled wakerobin,   Narrowpetal wakerobin
Trillium angustipetalum is a perennial herb that is native to California, and found only slightly beyond California borders.
Record Count by County

Amador: 4 Fresno: 7 Napa: 4 Siskiyou: 2
Butte: 1 Humboldt: 36 Nevada: 9 Tehama: 2
Calaveras: 9 Lake: 1 Placer: 11 Trinity: 1
Colusa: 1 Madera: 3 San Luis Obispo: 29 Tuolumne: 15
Del Norte: 15 Mariposa: 3 Santa Barbara: 12 Yuba: 3
El Dorado: 25 Monterey: 1 Shasta: 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]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/06/2025).