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

Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang
tall wheatgrass
Poaceae (Grass family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #10802)

E-Flora BC Static Map
Distribution of Thinopyrum ponticum
Click here to view the full interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Perennial, tufted grass from fibrous roots; stems smooth, nodes exposed, 50-200 cm tall.
Sheaths smooth but fringed with fine hairs on the lower margins; blades with in-rolled margins, not thickened, membranous, densely hairy or rough, with 8, rounded, thickened nerves on the upper surfaces, 2-6.5 mm wide; ligules membranous, 0.3-1.5 mm long; ear-shaped lobes at the leaf-bases 0.2-1.5 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

Dry roadsides, slopes and open forests in the steppe and lower montane zones; rare in SW BC (Vancouver), infrequent in SC and SE BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Thinopyrum ponticum

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) 885 885 885
Slope Gradient (%) 4 4 4
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
108 108 108
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 4
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: IDF(1)


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 elongatum
Agropyron varnense (Velen.) Hayek
Elymus elongatus
Elymus elongatus subsp. ponticus
Elymus elongatus var. ponticus (Podp.) Dorn
Elymus varnensis (Velen.) Runemark
Elytrigia elongata (Host) Nevski
Elytrigia pontica
Elytrigia pontica subsp. pontica (Podp.) Holub [superfluous autonym]
Lophopyrum elongatum (Host) A. L÷ve
Thinopyrum ponticum subsp. ponticum

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References