Calflora, a 501c3 non-profit
Distribution by County   94    
Adenocaulon bicolor  Hook.
American trailplant, Trail plant
Adenocaulon bicolor is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 2 Glenn: 2 Monterey: 7 Sierra: 51
Alpine: 1 Humboldt: 113 Napa: 13 Siskiyou: 65
Amador: 3 Lake: 8 Nevada: 39 Sonoma: 84
Butte: 58 Lassen: 6 Placer: 57 Tehama: 25
Calaveras: 14 Madera: 2 Plumas: 95 Trinity: 93
Colusa: 1 Marin: 104 San Mateo: 56 Tulare: 42
Del Norte: 31 Mariposa: 46 Santa Clara: 15 Tuolumne: 37
El Dorado: 46 Mendocino: 60 Santa Cruz: 51 Yuba: 20
Fresno: 24 Modoc: 14 Shasta: 56

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: 02/08/2026).