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

Poa laxiflora Buckley
lax-flowered bluegrass (looseflower bluegrass)
Poaceae (Grass family)

Introduction to Vascular Plants
Once images have been obtained, photographs of this species will be displayed in this window.Click on the image to enter our photo gallery.
Currently no image is available for this taxon.
E-Flora BC Static Map
Distribution of Poa laxiflora
Click here to view our 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, loosely tufted grass from fibrous roots and long rhizomes or with isolated shoots; stems 50-120 cm tall.
Sheaths usually rough, the projections pointed downward, the margins open 1/4-1/2 their length; blades 3-6 mm wide, flat, narrowly prow-tipped; ligules 2-3.5 mm long, the backs smooth or slightly rough.
Inflorescence a panicle, 14-30 cm long, open, sparse, the branches mostly 1 to 2 per node, widely spreading, the longest 5.5-12 cm long, slightly to moderately rough-angled; spikelets laterally compressed, 4-8 mm long, 2- to 4-flowered; lower glumes 1- to 3-nerved; rachilla internodes about 1 mm long, smooth, hairless; lemmas lanceolate, 3.2-6 mm long, the tips sharp-pointed, surface smooth or sparsely rough, the keels and marginal nerves sparsely short silky-hairy, lateral nerves rarely sparsely, minutely soft-hairy and moderately prominent, hairless between the nerves; calluses cobwebby; palea keels more or less rough, hairless; flowers bisexual, normal (rarely bulbiferous); anthers 0.5-1.1 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist old-growth forests and rocky slopes in the lowland and montane zones; infrequent in and W of the Coast-Cascade Mountains; N to SE AK and S to NW OR.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Poa laxiflora

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) 670 1387 2035
Slope Gradient (%) 0 23 75
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
28 308 344
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 4 8
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: ESSF(8), IDF(7), MS(3), SBPS(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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References