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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: 44 Kern: 7 Orange: 16 Shasta: 50
Alpine: 11 Lake: 15 Placer: 74 Sierra: 26
Amador: 7 Lassen: 9 Plumas: 82 Siskiyou: 50
Butte: 101 Los Angeles: 87 Riverside: 61 Sonoma: 77
Calaveras: 4 Madera: 8 San Benito: 22 Tehama: 14
Colusa: 2 Marin: 496 San Bernardino: 42 Trinity: 65
Contra Costa: 24 Mariposa: 46 San Diego: 99 Tulare: 149
Del Norte: 45 Mendocino: 115 San Francisco: 105 Tuolumne: 28
El Dorado: 47 Modoc: 2 San Luis Obispo: 59 Ventura: 17
Fresno: 74 Mono: 10 San Mateo: 180 Yuba: 19
Glenn: 2 Monterey: 127 Santa Barbara: 94
Humboldt: 104 Napa: 13 Santa Clara: 25
Inyo: 10 Nevada: 30 Santa Cruz: 80

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: 11/12/2025).