Distribution: Occurring east of the Cascades crest in northeastern Washington; southeastern British Columbia to northeastern Washington, east to the northen Rocky Mountains and northern Great Plains.
Habitat: Cliff crevices, limestone or basalt, from lowlands to the montane.
Origin: Native
Conservation Status: Not of concern
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PNW Herbaria: Specimen records of Pellaea glabella ssp. occidentalis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Pellaea glabella ssp. occidentalis checklist entry
OregonFlora: Pellaea glabella ssp. occidentalis information
E-Flora BC: Pellaea glabella ssp. occidentalis atlas page
CalPhotos: Pellaea glabella ssp. occidentalis photos