Perennial, strongly tufted grass from fibrous roots; stems often decumbent, and rooting at the nodes, not bulbous at the base, 15-50 cm tall/long.
Sheaths smooth; blades flat, 4-7 mm wide, the margins rough; ligules blunt, nearly entire, 1-3 (4) mm long; ear-shaped lobes at the leaf-bases lacking or small and blunt to rounded, more obvious on the upper leaves.
Inflorescence a nearly globe-shaped to short-cylindrical panicle, 1-4.5 cm long, often over 1 cm wide when pressed; glumes hairy on the sides, fringed with long, bristlelike hairs on the keels, 3.5-4.5 mm long, abruptly narrowed to the stout awns, the awns 1.5-2.5 (3) mm long; lemmas short-hairy, toothed by the 5 nerves, 2-2.5 mm long; paleas nearly equal to the lemmas; anthers 1-1.4 (1.5) mm long.
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
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(76), BAFA(88), BWBS(3), CMA(4), CWH(5), ESSF(649), IMA(49), MH(19), MS(32), SBPS(3), SBS(5), SWB(23)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Phleum alpinum var. commutatum (Gaudin) Griseb.
Phleum commutatum Gaudin
Phleum commutatum var. americanum (Fourn.) Hultén