Distribution: Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to northwestern Oregon; also in eastern North America.
Habitat: Often on calcareous rocks,
Spores: May-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Asplenium trichomanes ssp. quadrivalens in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Asplenium trichomanes ssp. quadrivalens checklist entry.
OregonFlora: Asplenium trichomanes ssp. quadrivalens information.
E-Flora BC: Asplenium trichomanes ssp. quadrivalens atlas page.
CalPhotos: Asplenium trichomanes ssp. quadrivalens photos.
USDA Plants: Asplenium trichomanes ssp. quadrivalens information.