Calflora, a 501c3 non-profit
Distribution by County   5448    
Menyanthes trifoliata  L.
Bogbean, Buck bean, Buckbean
Menyanthes trifoliata is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Butte: 3 Lassen: 10 Nevada: 8 Siskiyou: 16
Del Norte: 3 Madera: 2 Placer: 1 Tehama: 1
El Dorado: 41 Marin: 3 Plumas: 30 Trinity: 7
Fresno: 17 Mariposa: 3 San Francisco: 1 Tulare: 2
Humboldt: 1 Mendocino: 15 Shasta: 9 Tuolumne: 13
Inyo: 1 Modoc: 3 Sierra: 3

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: 07/15/2026).