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)

point, line, or polygon

Plant Characteristics
and Associations
Dryopteris expansa
© 2009 Phil Pullen
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


Search the International Plants Names Index

Search (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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 17, 2019).