Distribution: Occurring east of the Cascades crest in northern Washington; Alaska to Oregon, east to Northwest Territories, Alberta, Idaho, Montana, Utah, and Colorado.
Habitat: Moist to dry subalpine and alpine meadows, fellfields, rocky slopes, swales, and shores.
Flowers: July-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Review Group 1 in Washington (WANHP)
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PNW Herbaria: Specimen records of Carex atrosquama in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Carex atrosquama checklist entry.
OregonFlora: Carex atrosquama information.
E-Flora BC: Carex atrosquama atlas page.
CalPhotos: Carex atrosquama photos.
USDA Plants: Carex atrosquama information.