E-Flora BC: Electronic Atlas of the Flora of British Columbia

Calamagrostis purpurascens R. Br. var. purpurascens
purple reedgrass
Poaceae (Grass family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #17146)

E-Flora BC Static Map
Distribution of Calamagrostis purpurascens var. purpurascens
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Species Information

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General:
Perennial, tufted grass from fibrous roots and short rhizomes; stems stiff, unbranched, 10-80 cm tall, with 2 to 3 nodes.
Leaves:
Sheath summits smooth to hairy; leaf blades stiff, flat, 5-30 cm long, 2-5 mm wide, often rough or short-hairy above the leaf sheaths, smooth to rough on the collars; ligules 2-6 mm long.
Flowers:
Inflorescence a stiff, spikelike panicle 4-15 cm long, its branches up to 3.5 cm long; spikelets 1-flowered; glumes long-pointed, 4.5-8 mm long, rough, keeled; lemmas nearly as long as the glumes, minutely 4-toothed at the tips, awned, the awns stout, twisted and attached near the base, extending well beyond the glume tips, the callus hairs of unequal length, up to 1/3 as long as the florets; rachillas 1-2 mm long, with hairs 1/2 to as long as the florets.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry, rocky ridges, sandy slopes, shrublands and open forests in the montane to alpine zones; common in BC east of the Coast-Cascade Mountains; amphiberingian, N to AK, YT and NT, E to PQ and Labr. and S to MN, SD, NM, UT, NV and CA; Greenland, E Asia.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Calamagrostis lepageana Louis-Marie
Calamagrostis maltei (Polunin) A. L÷ve & D. L÷ve
Calamagrostis purpurascens subsp. maltei (Polunin) Porsild
Calamagrostis purpurascens subsp. purpurascens
Calamagrostis purpurascens var. laricina
Calamagrostis purpurascens var. maltei Polunin
Calamagrostis yukonensis Nash
Deschampsia congestiformis Booth

Taxonomic and Nomenclatural Links

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General References