Poa leptocoma Trin.
bog bluegrass (marsh bluegrass)
Poaceae (Grass family)
Introduction to Vascular Plants
bog bluegrass (marsh bluegrass)
Poaceae (Grass family)
Introduction to Vascular Plants
Species Information
General:
Perennial, loosely tufted grass from fibrous roots; stems 15-50 cm tall.
Leaves:
Sheaths minutely rough-hairy, the margins open 2/5-3/4 their length; blades 1-4 mm wide, flat, thin, weakly prow-tipped; ligules 1.5-4 mm long, the tips blunt to rounded, the backs smooth or slightly rough.
Flowers:
Inflorescence a lax panicle, 5-15 cm long, sparse, open, the branches 1 to 3 (5) per node, spreading to reflexed, hairlike, slightly rough to rough on angles; spikelets laterally compressed, 4-8 mm long, 2- to 5-flowered; glumes awl-like to narrowly lanceolate, thin, the lower 1-nerved; rachillas smooth, hairless; lemmas broadly lanceolate, 3-4 mm long, the tips narrowly sharp-pointed, usually bronze or purple-coloured, surface thinly membranous, smooth, the keels (up to 2/3 the length) and marginal nerves sparsely silky-hairy, hairless between the nerves; calluses sparsely cobwebby; palea keels smooth, slightly rough or comb-like; flowers bisexual; anthers 0.2-1.1 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:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source: The USDA
Ecology
Ecological Framework for Poa leptocoma
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) |
1682 | 0 | 2675 |
| Slope
Gradient (%) |
22 | 0 | 75 |
|
Aspect (degrees) |
242 | 0 | 359 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 0 | 7 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
110 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(4), BAFA(31), BWBS(2), CWH(2), ESSF(32), ICH(1), IDF(3), IMA(13), MH(7), MS(2), PP(2), SBPS(2), SBS(1), SWB(4) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Wet to moist meadows, streams and bogs in the subalpine and alpine zones; frequent throughout BC except absent in NE BC; amphiberingian, N to AK and SW YT and S to NM, AZ and CA; E Asia.Status Information
Synonyms
Synonyms and Alternate Names:
Poa leptocoma subsp. leptocoma