Vascular Plants - Dryopteridaceae - Gymnocarpium:
Gymnocarpium disjunctum
Page Author: Don Knoke
Pacific oakfern, western or fern 
Habit: herb
Duration: perennial
Origin: Native
Distribution: Circumboreal, extending south in North America to Oregon, Arizona and Virginia.
Habitat: Moist woods, streambanks and wet cliffs.
Accepted Name:
Gymnocarpium disjunctum (Rupr.) Ching
Synonyms:
Dryopteris disjuncta C. V. Morton
Gymnocarpium dryopteris (L.) Newman ssp. disjunctum (Ruprecht) Sarvela
Gymnocarpium dryopteris (L.) Newman var. disjunctum (Rupr.) Ching
Polypodium dryopteris L.
Polypodium dryopteris L. var. disjunctum Ruprecht

Treated in Flora of the PNW as:
Gymnocarpium dryopteris, in part
Additional Resources:

PNW Herbaria Specimens: View list of all Gymnocarpium disjunctum specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Gymnocarpium disjunctum specimens in the WTU Herbarium database.

Washington Flora Checklist: Gymnocarpium disjunctum treatment.

E-Flora BC: Gymnocarpium disjunctum atlas page.

CalPhotos: Gymnocarpium disjunctum images.

USDA Plants Database: Gymnocarpium disjunctum.
Additional photographs of Gymnocarpium disjunctum:
(click on a thumbnail to view larger photo)

Ed Alverson

Paul Slichter, 2008

Susan McDougall, 2012

G. D. Carr, 2013

G. D. Carr, 2013

G. D. Carr, 2013

G. D. Carr, 2013

G. D. Carr, 2013

Susan McDougall, 2014

Robert L. Carr, 2012

Robert L. Carr, 2012

Robert L. Carr, 2012

Robert L. Carr, 2012

Robert L. Carr, 2012

Craig Althen, 2010

Craig Althen, 2011
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