Perennial, tufted grass from fibrous roots; stems 25-70 cm tall.
Sheaths open; blades in-rolled, 0.1-1 mm wide and usually wavy when dry; ligules on the lower leaves 1.5-7.5 mm long, tapering to sharp points, the upper ligules to 2 mm long.
Inflorescence an open, spreading panicle, 9-20 cm long, the unequal branches and flower stalks spreading wide; spikelets single at the end of each flower stalk; glumes 5-9 mm long, rounded at the base and tapering above the middle to points, with short, stiff hairs throughout; lemmas 3-4 mm long, densely hairy, the hairs 2.5-6 mm long, awned, the stout awns 3-6 mm long, the first segments rough or short-hairy, deciduous at maturity; paleas almost as long as the lemmas; calluses 0.4-1 mm long, sharp.
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
|BG(31), BWBS(1), ICH(2), IDF(6), PP(3), SBS(7)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Eriocoma cuspidata Nutt.
Oryzopsis hymenoides (Roem. & Schult.) Ricker ex Piper
Stipa hymenoides Roem. & Schult.