Perennial grass from fibrous roots and conspicuous rhizomes; stems unbranched, 60-100 cm tall, with 2 to 3 nodes.
Sheaths smooth to occasionally hairy above, the sheath summits usually with conspicuous tufted hairs; ligules 3-5 mm long, with jagged margins at the tips; leaf blades flat, rough or occasionally just hairy above, rough or smooth below, 8-40 cm long and 2-5 mm wide.
Inflorescence a congested to somewhat open panicle, pale or less often purplish, 6-15 (25) cm long, with the longer branches 2-4 cm long; spikelets 1-flowered; glumes long-pointed, 4-5 mm long, smooth to somewhat rough short-hairy, especially on the keels; lemmas 3-4 mm long, jagged and 4-toothed at the tips, with stout, strongly twisted and abruptly bent awns 3.5-4.5 mm long, attached near the base, the callus hairs of varying length, up to 1 mm long; rachillas about 1 mm long, with hairs to 2 mm.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Present from Spring to Summer
Source: The USDA
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|AT(1), BAFA(1), BG(23), BWBS(1), CWH(1), ESSF(545), ICH(900), IDF(2824), MS(1770), PP(186), SBPS(336), SBS(502)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Calamagrostis fasciculata Kearney