Thinopyrum intermedium (Host) Barkworth & D.R. Dewey
intermediate wheatgrass
Poaceae (Grass family)
Introduction to Vascular Plants
intermediate wheatgrass
Poaceae (Grass family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Species Information
General:
Perennial grass from rhizomes; stems smooth or hairy, 50-115 cm tall.
Leaves:
Sheaths smooth or fringed with fine hairs; blades flat, the margins prominently thickened and hard, smooth on the lower surfaces, sparsely hairy on the upper surfaces, 2-8 mm wide; ligules membranous, 0.1-0.75 mm long; ear-shaped lobes at the leaf-bases 0.5-1.25 mm long.
Flowers:
Inflorescence an erect or lax, terminal spike, 8-21 cm long, with 1 spikelet per node; spikelets 3- to 10-flowered, 11-18 mm long; glumes stiff, blunt, with evident midnerves often forming thick points, 4.5-10 mm long, the margins not transparent; lemmas 7.5-10 mm long, blunt and awnless or rarely with awns up to 5 mm long.
Illustration
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
USDA Species Characteristics
Flower Colour:
Yellow
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source: The USDA
Ecology
Ecological Framework for Thinopyrum intermedium
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1015 | 780 | 1540 |
| Slope
Gradient (%) |
9 | 0 | 63 |
|
Aspect (degrees) |
136 | 90 | 356 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 1 | 5 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
9 | ||
| Modal
BEC Zone Class |
IDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
IDF(6), MS(2), PP(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry roadsides and forests in the montane zone; rare in SW BC, infrequent in SC and SE BC; introduced from Eurasia.Synonyms
Synonyms and Alternate Names:
Agropyron aucheri Boiss.
Agropyron ciliatiflorum Roshev.
Agropyron gentryi Melderis
Agropyron glaucum (Desf. ex DC.) Roemer & J.A. Schultes [anomalous]
Agropyron intermedium
Agropyron intermedium var. trichophorum (Link) Halac.
Agropyron podperae Nabelek
Agropyron pulcherrimum Grossh.
Agropyron trichophorum
Elymus hispidus
Elymus hispidus subsp. barbulatus (Schur) Melderis
Elymus hispidus var. ruthenicus (Griseb.) Dorn
Elymus intermedius (Host) Beauv.
Elytrigia intermedia
Elytrigia intermedia subsp. barbulata (Schur) A. L÷ve
Elytrigia intermedia subsp. intermedia (Host) Nevski [superfluous autonym]
Elytrigia intermedia subsp. trichophora (Link) Tvzel
Thinopyrum intermedium subsp. barbulatum (Schur) Barkworth & D.R. Dewey