Calflora, a 501c3 non-profit
Distribution by County   6456    
Pholistoma membranaceum  (Benth.) Constance
White fiesta flower,   White fiestaflower
Pholistoma membranaceum is an annual herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 29 Kings: 3 Riverside: 87 San Mateo: 3
Contra Costa: 18 Los Angeles: 59 San Benito: 94 Santa Barbara: 11
Fresno: 60 Madera: 10 San Bernardino: 139 Santa Clara: 9
Imperial: 13 Mariposa: 1 San Diego: 142 Stanislaus: 18
Inyo: 24 Merced: 5 San Joaquin: 5 Tulare: 26
Kern: 187 Monterey: 82 San Luis Obispo: 216 Ventura: 15

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: 12/10/2025).