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Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Dryopteris expansa (Spreading woodfern)
Cressler, Alan

Dryopteris expansa

Dryopteris expansa (C. Presl) Fraser-Jenkins & Jermy

Spreading Woodfern

Dryopteridaceae (Wood Fern Family)

Synonym(s): Dryopteris assimilis, Dryopteris dilatata, Dryopteris dilatata ssp. americana, Dryopteris spinulosa var. dilatata

USDA Symbol: DREX2

USDA Native Status: L48 (N), AK (N), CAN (N), GL (N)

The starchy rootstocks were eaten by the local native people.


From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb , Fern

Bloom Information

Bloom Color: Not Applicable
Bloom Notes: Not a flowering plant. Reproduces by spores.


USA: AK , CA , CO , ID , MI , MN , MT , OR , WA , WI , WY
Canada: BC , NL
Native Habitat: Woodland,Riparian,Alpine

Growing Conditions

Light Requirement: Part Shade , Shade
Soil Moisture: Moist
Soil Description: Organic, Humus Enriched

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Dryopteris expansa in USDA Plants
FNA: Find Dryopteris expansa in the Flora of North America (if available)
Google: Search Google for Dryopteris expansa


Record Modified: 2018-11-20
Research By: TWC Staff

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