Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to south-central Washington, east to western Montana but not in Idaho.
Habitat: Rocky or gravelly soil, usually on moraines or above timberline.
Flowers: July-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Threatened in Washington (WANHP)
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PNW Herbaria: Specimen records of Luzula arcuata ssp. unalaschcensis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Luzula arcuata ssp. unalaschcensis checklist entry
OregonFlora: Luzula arcuata ssp. unalaschcensis information
E-Flora BC: Luzula arcuata ssp. unalaschcensis atlas page
CalPhotos: Luzula arcuata ssp. unalaschcensis photos