Perennial, tufted grass from fibrous roots, some shoots non-flowering; stems 10-40 cm tall.
Sheaths smooth; blades 2.5-13 cm long, 1-3 mm wide, flat; ligules 1.5-3 mm long.
Inflorescence broadly egg-shaped to lanceolate, usually open, loose or more or less constricted, 3-10 cm long, at least twice as long as wide, the branches more or less stiff, ascending or appressed, the lower branches to 4 cm long, branching above the middle, the spikelets sparse, borne mostly above the midpoints; spikelets usually 1.8-3 mm long; glumes 2.5-3.8 mm long; lemmas 1.6-2.6 mm long, the awns attached just below the middle from the back, 3-4 mm long, bent, the callus hairs to 0.2 mm long; paleas absent; anthers 0.5-0.8 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
||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
|BWBS(4), ICH(1), IDF(1), MS(3)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Agrostis bakeri Rydb.
Agrostis borealis Hartm.
Agrostis borealis var. americana (Scribn.) Fernald
Agrostis borealis var. paludosa (Scribn.) Fernald
Agrostis idahoensis var. bakeri (Rydb.) W.A. Weber
Agrostis mertensii subsp. borealis (Hartman) Tzvelev
Agrostis rupestris auct. non All.