Calflora, a 501c3 non-profit
Distribution by County   2700    
Descurainia pinnata  (Walter) Britton
Western tansy mustard,   Western tansymustard,   Yellow tansy mustard
Descurainia pinnata is an annual herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 1 Madera: 2 Riverside: 145 Siskiyou: 42
Alpine: 2 Mariposa: 4 San Benito: 5 Stanislaus: 1
El Dorado: 3 Modoc: 15 San Bernardino: 615 Tehama: 2
Fresno: 12 Mono: 33 San Diego: 333 Tulare: 23
Imperial: 40 Monterey: 4 San Joaquin: 2 Tuolumne: 1
Inyo: 171 Nevada: 8 San Luis Obispo: 87 Ventura: 87
Kern: 167 Orange: 43 Santa Barbara: 100
Lassen: 93 Placer: 3 Santa Clara: 3
Los Angeles: 185 Plumas: 8 Shasta: 4

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/21/2024).