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Distribution by County   2823    
Dryopteris arguta  (Kaulf.) Maxon
California wood fern,   Coastal wood fern,   Shield fern
Dryopteris arguta is a fern that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 66 Los Angeles: 451 Riverside: 109 Siskiyou: 5
Alpine: 1 Madera: 3 Sacramento: 5 Solano: 5
Amador: 7 Marin: 283 San Benito: 30 Sonoma: 135
Butte: 107 Mariposa: 74 San Bernardino: 58 Sutter: 3
Calaveras: 2 Mendocino: 35 San Diego: 278 Tehama: 6
Contra Costa: 67 Merced: 1 San Francisco: 19 Trinity: 8
Del Norte: 4 Mono: 3 San Luis Obispo: 120 Tulare: 106
El Dorado: 37 Monterey: 166 San Mateo: 355 Tuolumne: 25
Fresno: 42 Napa: 41 Santa Barbara: 221 Ventura: 119
Humboldt: 29 Nevada: 27 Santa Clara: 149 Yolo: 1
Kern: 21 Orange: 199 Santa Cruz: 134 Yuba: 6
Lake: 14 Placer: 21 Shasta: 6
Lassen: 2 Plumas: 4 Sierra: 1

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/15/2026).