Calflora, a 501c3 non-profit
Distribution by County   1142    
Brassica juncea  (L.) Czern.
Brown mustard,   India mustard
Brassica juncea is an annual herb that is not native to California.
Record Count by County

Alameda: 1 Merced: 2 San Joaquin: 2 Tehama: 1
Butte: 2 Monterey: 6 San Luis Obispo: 1 Trinity: 1
Colusa: 2 Napa: 1 San Mateo: 1 Tulare: 1
Contra Costa: 1 Orange: 3 Santa Barbara: 4 Tuolumne: 1
Fresno: 1 Riverside: 4 Santa Clara: 5 Ventura: 1
Imperial: 1 Sacramento: 5 Solano: 3 Yolo: 2
Los Angeles: 3 San Bernardino: 2 Sonoma: 1
Marin: 1 San Diego: 2 Stanislaus: 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: 12/12/2025).