Calflora
Taxon  Report   2824    
Dryopteris expansa  (C. Presl) Fraser-Jenk. & Jermy
Common wood fern,  Spreading wood fern, Spreading woodfern
Dryopteris expansa
© 1995 Saint Mary's College of California
Photos from
CalPhotos / Calflora
Dryopteris expansa
© 2009 Phil Pullen
Dryopteris expansa
© 1995 Saint Mary's College of California
Dryopteris expansa, a pteridophyte, is a fern that is native to California, is also found elsewhere in North America and beyond.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

Plant Characteristics
and Associations
Dryopteris expansa
© 2009 Phil Pullen
Family: DRYOPTERIDACEAE  
Genus: Dryopteris
Communities: Redwood Forest, Mixed Evergreen Forest, wetland-riparian

Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Dryopteris assimilis
PLANTS: Dryopteris dilatata ssp. americana
PLANTS: Dryopteris dilatata
. . .
More information about  Dryopteris expansa
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (DREX2)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available: https://www.calflora.org/   (Accessed: Nov 12, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.