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Distribution by County   959    
Athyrium filix-femina  (L.) Roth  var. cyclosorum  Rupr.
Common lady fern,   Subarctic lady fern,   Western lady fern
Athyrium filix-femina var. cyclosorum is a fern that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 23 Humboldt: 50 Napa: 5 Santa Clara: 9
Alpine: 4 Inyo: 2 Nevada: 13 Santa Cruz: 23
Amador: 4 Kern: 1 Placer: 18 Shasta: 13
Butte: 44 Lake: 6 Plumas: 60 Sierra: 6
Calaveras: 5 Los Angeles: 1 Riverside: 19 Siskiyou: 2
Colusa: 2 Madera: 3 San Bernardino: 28 Sonoma: 23
Contra Costa: 13 Marin: 133 San Francisco: 18 Tehama: 10
Del Norte: 3 Mariposa: 16 San Joaquin: 3 Trinity: 20
El Dorado: 33 Mendocino: 57 San Luis Obispo: 11 Tulare: 36
Fresno: 67 Mono: 10 San Mateo: 36 Tuolumne: 8
Glenn: 1 Monterey: 18 Santa Barbara: 15 Yuba: 3

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: 12/03/2024).