Calflora, a 501c3 non-profit
Distribution by County   11431    
Mountain brome
Bromus carinatus var. marginatus is a perennial grasslike herb that is native to California, and also found elsewhere in North America and beyond.
Current name in JEPS: Bromus sitchensis var. marginatus
Record Count by County

Alameda: 2 Kern: 12 Nevada: 16 Santa Cruz: 2
Alpine: 13 Lake: 6 Placer: 31 Shasta: 5
Amador: 1 Lassen: 30 Plumas: 14 Sierra: 7
Butte: 7 Los Angeles: 17 Riverside: 19 Siskiyou: 41
Colusa: 1 Madera: 6 Sacramento: 1 Sonoma: 8
Contra Costa: 1 Marin: 9 San Bernardino: 26 Tehama: 2
Del Norte: 9 Mariposa: 5 San Diego: 4 Trinity: 18
El Dorado: 10 Mendocino: 3 San Francisco: 1 Tulare: 10
Fresno: 4 Modoc: 10 San Luis Obispo: 8 Tuolumne: 27
Glenn: 1 Mono: 10 San Mateo: 5 Ventura: 17
Humboldt: 23 Monterey: 2 Santa Barbara: 10 Yuba: 2
Inyo: 10 Napa: 1 Santa Clara: 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: 10/07/2026).