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

Carex duriuscula C.A. Mey.
narrow-leaved sedge (needleleaf sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #3421)

E-Flora BC Static Map
Distribution of Carex duriuscula
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Species Information

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Perennial herb from long-creeping rhizomes; stems 5-20 cm tall, arising singly or a few together, exceeding the leaves.
Sheaths green, the lower ones bladeless; blades 1 to 4 per stem, crowded toward the base, flat or more often channeled, the margins sometimes in-rolled, 0.3-1.5 mm wide.
Spikes densely aggregated into an egg-shaped, 5- to 20-mm long head, the spikes scarcely distinguishable, 4-9 mm long, unstalked, with both female and male flowers, the male flowers towards the tips; bracts inconspicuous and like the scales.
Perigynia few, narrowly to broadly egg-shaped, 2.5-3.5 mm long, 1.5-2 mm wide, appressed ascending, brown, obscurely biconvex, smooth, nerveless or often more or less several-nerved, short-stalked, the beaks bidentate, finely toothed, 1/3 to 1/4 the length of the bodies; female scales broadly egg-shaped, as long as and slightly wider than the perigynia, the lower ones awn-tipped, the upper ones round-tipped, light to medium brown, the margins translucent; stigmas 2; achenes lens-shaped, smooth, 1.5-1.8 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to dry, often alkaline, grassy or rocky slopes in the steppe and montane zones; infrequent in C and SE BC, rare in NE BC; N to AK, YT and NT, E to MB and S to IL, MO, KS, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Carex duriuscula

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) 380 940 1700
Slope Gradient (%) 0 11 47
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
63 272 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 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: BG(5), CWH(2), ESSF(2), ICH(1), IDF(4), MH(2), PP(2)


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.

Synonyms and Alternate Names

Carex eleocharis L.H. Bailey
Carex stenophylla auct. non Wahlenb.
Carex stenophylla subsp. eleocharis (Bailey) HultTn
Carex stenophylla var. eleocharis
Carex stenophylla var. enervis Kⁿk.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References