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
Strongly rhizomatous perennial, the smooth culms 6-12 dm. tall.
Sheaths open, the collor glabrous to strongly pubescent; ligules membranous, 3-8 mm. long, usually lacerate; blades flat, scabrous, 3-8 mm. broad.
Inflorescence an open, diffuse panicle 15-25 cm. long; spikelets 1-flowered; glumes usually purplish, 2.5-6 mm. long, pointed, scabrous on the keel; lemma papery, shorter than the glumes, with a straight awn about the same length attached at midlength or above; palea shorter than the lemma, the rachilla prolonged behind the palea about 0.2-1.3 mm. and strongly bearded; callus hairs long and abundant.
Publication: Ess. Agrostogr. 157 (15, 152). 1812. 1812.
Calamagrostis atropurpurea Nash
Calamagrostis canadensis (Michx.) P. Beauv. var. imberbis (Stebbins) C.L. Hitchc. [HC]
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var. canadensis – bluejoint reedgrass
Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America. -
var. langsdorffii – Langsdorff's jointed reedgrass Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, and eastern North America.
PNW Herbaria: Specimen records of Calamagrostis canadensis in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Calamagrostis canadensis checklist entry.
OregonFlora: Calamagrostis canadensis information.
E-Flora BC: Calamagrostis canadensis atlas page.
CalPhotos: Calamagrostis canadensis photos.
USDA Plants: Calamagrostis canadensis information.
