Calflora, a 501c3 non-profit
Distribution by County   6789    
Polystichum imbricans  (D. C. Eaton) D.H. Wagner  ssp. imbricans 
Narrowleaf swordfern,   Rock sword fern
Polystichum imbricans ssp. imbricans is a fern that is native to California.
Record Count by County

Alameda: 1 Lassen: 1 Plumas: 43 Siskiyou: 33
Butte: 58 Los Angeles: 23 Riverside: 1 Sonoma: 2
Calaveras: 2 Marin: 8 San Bernardino: 14 Tehama: 14
Colusa: 3 Mariposa: 11 San Diego: 5 Trinity: 22
Del Norte: 11 Mendocino: 7 San Mateo: 8 Tulare: 6
El Dorado: 7 Monterey: 4 Santa Barbara: 7 Tuolumne: 4
Fresno: 5 Napa: 3 Santa Clara: 6 Ventura: 1
Glenn: 4 Nevada: 2 Santa Cruz: 1 Yuba: 6
Humboldt: 13 Orange: 1 Shasta: 14
Lake: 10 Placer: 5 Sierra: 5

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: 04/23/2024).