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

Deschampsia elongata (Hook.) Munro
slender hairgrass
Poaceae (Grass family)

Introduction to Vascular Plants

© Hans Roemer  Email the photographer   (Photo ID #22959)

E-Flora BC Static Map
Distribution of Deschampsia elongata
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Species Information

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Perennial, tufted grass from fibrous roots; stems numerous, slender, (10) 25-80 (100) cm tall.
Sheaths open, usually smooth; blades smooth to more or less rough short-hairy, the basal leaves tufted, the blades threadlike, flat or folded or sometimes in-rolled, mostly only 2-4 cm long, but rarely over 1.5 mm wide, the stem blades sometimes flat; ligules entire but usually split, short-hairy, sharp- to long-pointed, 3-9 mm long.
Inflorescence a narrow, pale greenish to purple panicle, 5-30 cm long, the slender branches ascending-erect; glumes 3-nerved, long-pointed, nearly equal, equalling or exceeding the upper florets; rachilla joints with hairs about as long as the calluses; lemmas firm, smooth, shining, often more or less rough short-hairy, (2) 2.5 (3) mm long, the tips blunt, jagged, awned from just below midlength, the awns nearly straight, about 3-4 mm long, the calluses with hairs half as long as the lemmas; paleas nearly equal to the lemmas; lodicules lanceolate, entire, 0.1-0.2 mm long; anthers about 0.5 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Habitat / Range

Moist to mesic streambanks, shorelines, open forests, clearings and meadows from the lowland to alpine zones; frequent in S BC; N to AK and S YT, E to SW AB and S to NM, AZ, MX and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Deschampsia elongata

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) 110 614 2080
Slope Gradient (%) 0 9 50
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
5 224 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 7
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: CWH(39), ESSF(5), ICH(2), IDF(1), MH(1), MS(4), SBPS(1), SBS(5)


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 cool temperate & cool mesothermal.

Synonyms and Alternate Names

Aira elongata Hook.
Deschampsia ciliata

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References