Calflora, a 501c3 non-profit
Distribution by County   6930    
Pteridium aquilinum  (L.) Kuhn  var. pubescens  Underw.
Hairy brackenfern,   Western bracken fern
Pteridium aquilinum var. pubescens is a fern that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 43 Inyo: 10 Nevada: 29 Santa Clara: 25
Alpine: 11 Kern: 7 Orange: 16 Santa Cruz: 81
Amador: 6 Lake: 15 Placer: 73 Shasta: 44
Butte: 84 Lassen: 8 Plumas: 79 Sierra: 22
Calaveras: 4 Los Angeles: 87 Riverside: 61 Siskiyou: 3
Colusa: 2 Madera: 8 San Benito: 22 Sonoma: 83
Contra Costa: 24 Marin: 494 San Bernardino: 44 Tehama: 12
Del Norte: 2 Mariposa: 46 San Diego: 98 Trinity: 54
El Dorado: 45 Mendocino: 116 San Francisco: 105 Tulare: 149
Fresno: 73 Mono: 10 San Luis Obispo: 57 Tuolumne: 29
Glenn: 2 Monterey: 128 San Mateo: 180 Ventura: 17
Humboldt: 73 Napa: 13 Santa Barbara: 98 Yuba: 18

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. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/16/2025).