Carex glacialis Mack.
glacier sedge (glacial sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

Photograph

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Map

E-Flora BC Static Map

Distribution of Carex glacialis
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Species Information

General:
Perennial, densely tufted herb from short fibrous roots; stems 5-15 cm tall, longer than the leaves.
Leaves:
Sheaths straw-coloured to purplish-brown; blades 3 to 8 per stem, flat, channelled above, borne on the lower 1/2 of the stem, 0.7-1 mm wide, the lower ones reduced.
Flowers:
Spikes 2 to 4, the terminal one unstalked, linear, 2-6 mm long, with male flowers, the lower spikes 1 to 3, not much separated, cylindrical, 2-5 mm long, with female flowers, unstalked or short-stalked, the stalks 1-2 mm long; bracts subtending the female spikes inconspicuous, scalelike, round-tipped or prolonged into awns up to 15 mm long, shorter than the inflorescence, the sheaths short, tubular, the upper bracts shorter.
Fruits:
Perigynia egg-shaped to lanceolate, 2-2.5 mm long, 0.8-1 mm wide, yellowish-green to straw-coloured, ascending to spreading, smooth, cylindrical, the beaks short, 0.3-0.5 mm long, translucent; female scales egg-shaped to elliptical, round-tipped to pointed, about as long as the perigynia, brownish, with greenish to straw-coloured midribs and translucent margins; stigmas 3; achenes 3-angled, pointed, 1.5-2 mm long.

SourceThe Illustrated Flora of British Columbia

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.

Ecology

Ecological Framework for Carex glacialis

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)
990 836 1610
Slope Gradient (%)
5 0 40

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

280 200 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 1 8
Modal Nutrient Regime
Class
B
# of field plots
 species was recorded in:
8
Modal BEC Zone Class
BWBS

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

BAFA(1), BWBS(3), SWB(1)

Habitat and Range

Dry open slopes and gravelly sites from the montane to alpine zones; infrequent in N BC, rare southward to 52degreeN; circumpolar, N to AK, YT and NT and E to NF; Greenland, Iceland, N Eurasia.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Carex glacialis var. glacialis