Calflora, a 501c3 non-profit
Distribution by County   9740    
Bromus berteroanus  Colla
Chilean chess
Bromus berteroanus is an annual grasslike herb that is not native to California.
Record Count by County

Alameda: 5 Madera: 3 San Benito: 9 Siskiyou: 2
Calaveras: 3 Marin: 3 San Bernardino: 142 Solano: 2
Contra Costa: 10 Mariposa: 1 San Diego: 27 Tulare: 11
Fresno: 11 Merced: 2 San Luis Obispo: 46 Tuolumne: 2
Imperial: 1 Mono: 1 San Mateo: 12 Ventura: 8
Inyo: 110 Monterey: 14 Santa Barbara: 29 Yolo: 1
Kern: 66 Napa: 2 Santa Clara: 34
Kings: 1 Riverside: 71 Santa Cruz: 1
Los Angeles: 57 Sacramento: 1 Sierra: 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: 12/07/2025).