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

Carex bicolor Bellardi ex All.
two-coloured sedge (twocolor sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #53022)

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Distribution of Carex bicolor
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Species Information

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General:
Perennial, loosely tufted herb from short rhizomes; stems 5-30 cm tall, longer than the leaves.
Leaves:
Sheaths tight; blades 3 to 6 per stem, flat, borne on the lower 1/3 of the stem, 1-2 mm wide, the lower ones reduced.
Flowers:
Spikes 3 to 5, 4-10 mm long, borne close together at the top of the stems, with female flowers, except the terminal spike with a few male flowers at the base, short-stalked; bracts subtending the female spikes with short sheaths, scalelike, the lowermost barely reaching the top of the inflorescence and with blackish earlike lobes at the top of the sheath.
Fruits:
Perigynia egg-shaped, 2-3 mm long, 0.7-1 mm wide, inflated, dull green to bluish-white, nerveless, with a powdery surface, beakless; female scales egg-shaped, pointed to rounded at the tips, shorter and narrower than the perigynia, purplish-black to reddish-brown, with greenish midribs and translucent margins; stigmas 2; achenes lens-shaped, 1.2-1.4 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet meadows and shorelines in the montane to alpine zones; rare in N and C BC; circumpolar, N to AK, YT and NT and E to NF; Greenland, Iceland, Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex bicolor

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

Minimum

Average

Maximum

Elevation (metres) 33 359 685
Slope Gradient (%) 3 9 28
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
20 77 350
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 4 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
6
Modal BEC Zone Class
BAFA
All BEC Zones (# of stations/zone) species was recorded in: BAFA(2), ESSF(1), SBS(1)

Climate

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