Poa lettermanii Vasey
Letterman's bluegrass
Poaceae (Grass family)

Introduction to Vascular Plants


Once images have been obtained, photographs of this taxon 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 lettermanii
Click here to view the full interactive map and legend

Species Information

Perennial, densely tufted grass from fibrous roots; stems 1-12 cm tall.
Sheath margins open 3/4-7/8 their length; blades 0.5-2 mm wide, flat or folded, thin; ligules 1-3 mm long, the backs smooth.
Inflorescence an erect panicle, 1-3 cm long, contracted, usually exserted from the top sheath, the branches appressed to ascending, slender, to 1.5 cm long, smooth, slightly grooved; spikelets laterally compressed, usually green, 3-4 mm long, longer than the stalks, 2- to 3-flowered; glumes usually equalling or exceeding the lower lemmas, the lower glumes 3-nerved; rachilla internodes less than 1 mm long, smooth; lemmas lanceolate, 2.5-3 mm long, thinly membranous, surface hairless or keels and marginal nerves sparsely minutely soft-hairy below; calluses hairless; palea keels rough; flowers bisexual; anthers 0.2-0.8 mm long.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Poa lettermanii

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)
2048 1580 2505
Slope Gradient (%)
21 2 36

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

190 104 269
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 1 2
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

AT(1), BAFA(1), ESSF(2), IMA(1)

Habitat and Range

Mesic to dry rocky slopes and meadows in the subalpine and alpine zones; infrequent throughout BC east of the Coast Mountains; S to CO, UT, NV and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Poa montevansii L. Kelso
Puccinellia lettermanii (Vasey) Ponert