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

Carex vallicola Dewey
Valley Sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #53162)

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Distribution of Carex vallicola
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Carex vallicola var. vallicola

Species Information

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Perennial, tufted herb from short, fibrous rhizomes, sometimes the rhizomes not evident; stems 15-40 cm tall, arising in loose clusters, roughened on the angles above, longer than the leaves.
Sheaths tight; blades 2 to 3 per stem, borne on the lower 1/4 of the stem, flat or channeled below, 0.5-2 mm wide, the lowermost reduced towards the bases of the stems.
Spikes 4 to 8, forming an elongated head 1-2 cm long, the lower ones noticeably remote, unstalked, with both female and male flowers, the inconspicuous male flowers towards the tips; bracts scalelike, much reduced, inconspicuous.
Perigynia elliptical to cylindrical, 3-3.7 mm long, 1.8-2.2 mm wide, with faint inconspicuous nerves, green, smooth, very short-stalked, the beaks 1 mm long, shallowly bidentate; female scales egg-shaped, equalling or slightly shorter than the perigynia, pointed or short-awned, greenish-translucent, the midribs greenish, the margins translucent; stigmas 2; achenes lens-shaped, smooth, 1.8-2.2 mm long, filling the bodies of the perigynia.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to dry meadows, open forests and shrublands in the steppe and montane zones; rare in SC BC; S to CO, UT, NV and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Carex vallicola

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) 20 1005 1480
Slope Gradient (%) 0 5 15
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
90 34 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 6 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(1), ESSF(1), MS(2)

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References