Calflora
Taxon  Report   2824    
Dryopteris expansa  (C. Presl) Fraser-Jenk. & Jermy
Common wood fern,   Spreading wood fern,   Spreading woodfern
Dryopteris expansa, a pteridophyte, is a fern that is native to California, and also found elsewhere in North America and beyond.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial

Bloom Period
Family: Dryopteridaceae  
Genus: Dryopteris

Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Communities: Redwood Forest, Mixed Evergreen Forest, wetland-riparian

Name Status:
Accepted by JEF + PLANTS
Alternate Names:
JEF + PLANTSDryopteris assimilis
PLANTSDryopteris dilatata ssp. americana
PLANTSDryopteris dilatata
PLANTSDryopteris spinulosa var. dilatata
More information about  Dryopteris expansa

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]. 2021. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/31/2021).