Agropyron fragile (Roth) P. Candargy
Siberian wheatgrass
Poaceae (Grass family)

Introduction to Vascular Plants


© Jamie Fenneman     (Photo ID #10751)


E-Flora BC Static Map

Distribution of Agropyron fragile
Click here to view the full interactive map and legend

Species Information

Perennial, tufted grass from fibrous roots; stems 30-80 cm tall.
Sheaths open, the lower ones smooth to somewhat long-hairy or soft-hairy; blades soft-hairy on the upper surfaces, flat, 2-5 (10) mm wide; ear-shaped lobes at the leaf-bases slender, about 1 mm long; ligules jagged and more or less fringed with fine hairs, scarcely 1 mm long.
Inflorescence a dense, more or less cylindrical spike, 6-10 cm long, the rachis smooth or hairy, spikelets closely graduated but greater than 1 mm between them, appressed, forming an angle of less than 30degree with the rachis, mostly 5- to 7- (8-) flowered, (5) 7-12 (15) mm long, separated by rachis internodes (1.5) 2.5-3.5 (5) mm long; glumes 5-7 mm long, short-awned; lemmas 6-8.5 mm long, sharp-pointed or short-awned, the awns less than 1 mm long.

SourceThe Illustrated Flora of British Columbia


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.

USDA Species Characteristics

Flower Colour:
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA


Ecological Framework for Agropyron fragile

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres)
926 330 1290
Slope Gradient (%)
8 0 20

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

91 50 133
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 3 5
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BWBS(1), IDF(1), SWB(1)

Habitat and Range

Dry roadsides, fields and waste places in the steppe and montane zones; infrequent in SC and SE BC; introduced from Eurasia.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Agropyron cristatum subsp. fragile (Roth) A. L÷ve
Agropyron cristatum var. fragile (Roth) Dorn
Agropyron fragile subsp. mongolicum (Keng) D.R. Dewey
Agropyron fragile subsp. sibiricum (Willd.) Melderis
Agropyron fragile var. sibiricum (Willd.) Tzvelev
Agropyron mongolicum Keng
Agropyron sibiricum