E-Flora BC: Electronic Atlas of the Flora of British Columbia

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

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #10751)

E-Flora BC Static Map
Distribution of Agropyron fragile
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Species Information

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General:
Perennial, tufted grass from fibrous roots; stems 30-80 cm tall.
Leaves:
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.
Flowers:
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.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

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

Source: The Illustrated Flora of British Columbia

Ecology

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

Minimum

Average

Maximum

Elevation (metres) 330 926 1290
Slope Gradient (%) 0 8 20
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
50 91 133
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 4 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
3
Modal BEC Zone Class
BWBS
All BEC Zones (# of stations/zone) species was recorded in: BWBS(1), IDF(1), SWB(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

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

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References