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Distribution by County   1420    
Camissonia contorta  (Douglas) Kearney
Contorted sun cup, Plains evening primrose
Camissonia contorta is an annual herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 15 Lassen: 82 Riverside: 5 Shasta: 21
Alpine: 2 Los Angeles: 6 Sacramento: 3 Siskiyou: 6
Amador: 1 Madera: 4 San Benito: 199 Stanislaus: 10
Butte: 7 Marin: 2 San Bernardino: 4 Sutter: 4
Calaveras: 1 Mariposa: 11 San Diego: 5 Tehama: 13
Colusa: 4 Mendocino: 5 San Francisco: 7 Trinity: 66
Contra Costa: 15 Merced: 7 San Joaquin: 19 Tulare: 96
El Dorado: 1 Modoc: 8 San Luis Obispo: 46 Tuolumne: 5
Fresno: 92 Mono: 7 San Mateo: 1 Ventura: 19
Inyo: 8 Monterey: 150 Santa Barbara: 13 Yolo: 2
Kern: 237 Napa: 10 Santa Clara: 19 Yuba: 1
Lake: 143 Plumas: 5 Santa Cruz: 13

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: 02/09/2026).