Trisetum canescens Buckley
tall trisetum (nodding trisetum)
Poaceae (Grass family)
Introduction to Vascular Plants
tall trisetum (nodding trisetum)
Poaceae (Grass family)
Introduction to Vascular Plants
Species Information
General:
Perennial, tufted grass from fibrous roots; stems smooth, (30) 50-120 tall.
Leaves:
Sheaths open, minutely rough, short appressed-hairy, or soft-hairy, the basal sheaths smooth; blades flat, minutely rough to soft-hairy, (2) 4-11 (12) mm wide, the margins rough or with hairs 2-3 mm long near the ligules; ligules smooth to hairy, irregularly jagged to shallowly jagged, fringed with fine hairs, 1.5-4 mm long.
Flowers:
Inflorescence a large, open or narrow, drooping to ascending panicle, 10-30 cm long, the branches more or less threadlike, bearing spikelets mainly towards the tips; spikelets with 2 or 3 perfect florets and 1 or 2 sterile upper lemmas; rachillas with joints about 2-3 mm long, the hairs about twice as long as the callus hairs; lower glumes narrow, mostly only 1-4 (5) mm long, the upper ones much wider, 3.5-6 (8) mm long, but usually shorter than the lower florets; lemmas 5-7 mm long, toothed, the teeth about 2 mm long, awned, the awns ascending, zig-zagged, about 10-14 mm long, the callus hairs scarcely 1 mm long; lodicules about 1-1.5 mm long; anthers 1-2.2 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:
Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source: The USDA
Ecology
Ecological Framework for Trisetum canescens
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) |
713 | 0 | 2175 |
| Slope
Gradient (%) |
15 | 0 | 200 |
|
Aspect (degrees) |
202 | 0 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 0 | 8 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
978 | ||
| Modal
BEC Zone Class |
CWH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BWBS(10), CDF(12), CWH(470), ESSF(158), ICH(93), IDF(20), MH(9), MS(49), SBPS(6), SBS(111) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to dry meadows, forest openings, grasslands and shrublands in the lowland, steppe and montane zones; common in coastal BC, less frequent eastward; N to AK, E to AB and S to WY, AZ and CA.Status Information
Synonyms
Synonyms and Alternate Names:
Trisetum canescens subsp. canescens
Trisetum cernuum subsp. canescens (Buckley) Calder & Roy L. Taylor
Trisetum cernuum var. canescens (Buckley) Beal
Trisetum cernuum var. projectum (Louis-Marie) Beetle
Trisetum spicatum var. projectum (Louis-Marie) J.T. Howell