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 Lake: 10 Placer: 5 Sierra: 5
Butte: 59 Lassen: 1 Plumas: 43 Siskiyou: 5
Calaveras: 2 Los Angeles: 23 San Bernardino: 13 Sonoma: 2
Colusa: 3 Marin: 9 San Diego: 5 Tehama: 15
Del Norte: 2 Mariposa: 12 San Mateo: 8 Trinity: 18
El Dorado: 7 Mendocino: 7 Santa Barbara: 7 Tulare: 6
Fresno: 5 Monterey: 4 Santa Clara: 6 Tuolumne: 4
Glenn: 4 Napa: 3 Santa Cruz: 1 Ventura: 1
Humboldt: 12 Nevada: 3 Shasta: 13 Yuba: 6

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).