Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America.
Habitat: Wet places, sea level to mid-elevations in the mountains.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Calamagrostis canadensis var. langsdorffii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Calamagrostis canadensis var. langsdorffii checklist entry
OregonFlora: Calamagrostis canadensis var. langsdorffii information
E-Flora BC: Calamagrostis canadensis var. langsdorffii atlas page
CalPhotos: Calamagrostis canadensis var. langsdorffii photos