Elymus trachycaulus (Link) Gould ex Shinners
slender wheatgrass
Poaceae (Grass family)
Introduction to Vascular Plants
slender wheatgrass
Poaceae (Grass family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Species Information
General:
Perennial, tufted grass from fibrous roots, sometimes with short rhizomes; stems 30-120 cm tall, erect, the nodes exposed, smooth.
Leaves:
Sheaths smooth or sometimes hairy; blades 2-5 mm wide, flat to in-rolled, somewhat concentrated around the base of the stems, ear-shaped lobes lacking at the leaf-bases or if present, to 0.5 mm long; ligules up to 0.5 mm long, blunt, entire.
Flowers:
Inflorescence spikelike, 4-25 cm long, 4-10 mm wide, with 1 spikelet per node; spikelets 9-16 mm long, 2 times as long as the internodes, with 3 to 5 (7) florets; glumes unequal, 6-12 mm long, 3/4 to as long as the lemmas, the tips pointed or shortly awned; lemmas 6-13 mm long, smooth near the base and rough above, the tips pointed to awned, the awns up to 40 mm long; anthers 0.8-3 mm long.
Notes:
Two subspecies are recognized in BC:
1. Lemmas awned, the awns 15-40 mm long, longer than the bodies................. ssp. subsecundus (Link) A. & D. Love
1. Lemmas unawned or awned, the awns less than 13 mm long, shorter than the bodies................ ssp. trachycaulus.
The hybrid Elymus x macounii Vasey (Elyhordeum x macounii [Vasey] Barkw. & D. R. Dewey, Elymordeum x macounii [Vasey] Barkw.) is sporadic in BC. It is mainly a hybrid between E. trachycaulus and Hordeum jubatum.
Ecology
Ecological Framework for Elymus trachycaulus
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) |
1224 | 1 | 2682 |
| Slope
Gradient (%) |
23 | 0 | 101 |
|
Aspect (degrees) |
185 | 0 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 0 | 7 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
488 | ||
| Modal
BEC Zone Class |
IDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BAFA(7), BG(42), BWBS(25), CWH(2), ESSF(109), ICH(8), IDF(165), IMA(10), MS(22), PP(25), SBPS(30), SBS(39), SWB(2) | ||
|
Source:
Klinkenberg 2013
|
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