Calflora, a 501c3 non-profit
Distribution by County   191    
Allium falcifolium  Hook. & Arn.
Scytheleaf onion,   Sickle leaf onion
Allium falcifolium is a perennial herb (bulb) that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 3 Humboldt: 49 San Mateo: 25 Tehama: 20
Colusa: 51 Lake: 83 Santa Clara: 24 Trinity: 77
Contra Costa: 22 Marin: 43 Shasta: 21
Del Norte: 90 Mendocino: 57 Siskiyou: 69
Glenn: 30 Napa: 61 Sonoma: 28

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: 01/13/2026).