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

Carex pluriflora Hultén
many-flowered sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Judith Holm  Email the photographer   (Photo ID #80832)

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Distribution of Carex pluriflora
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Species Information

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General:
Perennial, loosely tufted herb from creeping rhizomes, the roots yellow-woolly; stems 10-60 cm tall, arising singly or a few together, equalling the leaves, reddish-tinged at the bases.
Leaves:
Sheaths loose; blades 3 to 5 per stem, flat with slightly rolled-under margins, borne on the lower 1/2 of the stem, 2-4 mm wide, finely and densely white-pimpled below, the lower ones much reduced.
Flowers:
Spikes 2 to 4, the terminal one linear, 12-22 mm long, long-stalked, with male flowers, the lower spikes 1 to 3, with female flowers, cylindrical, 1-2 cm long, 6-8 mm wide, separate, long-stalked, nodding; bracts subtending the spikes greenish, membranaceous and whitish at the bases, the tips bristlelike, sheathless, shorter than the spikes, the upper ones reduced.
Fruits:
Perigynia egg-shaped to narrowly egg-shaped, 3-4.4 mm long, 1.9-2.5 mm wide, pale to blackish-brown, 10- to 15-nerved, densely pimpled, short-stalked, beakless; female scales broadly egg-shaped, usually awn-tipped, narrower and longer than the perigynia, black to dark brown, the centres lighter, tending to wrap around the perigynia below; stigmas 3; achenes 3-angled, short-stalked, smooth, 1.7-2.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs, marshes, streambanks and wet meadows in the lowland and montane zones; common in coastal BC; amphiberingian, N to AK and S to OR; coastal E Asia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex pluriflora

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) 0 259 1810
Slope Gradient (%) 0 6 50
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
5 28 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 6 8
Modal Nutrient Regime
Class
A
Number of field plots
 species was recorded in:
150
Modal BEC Zone Class
CWH
All BEC Zones (# of stations/zone) species was recorded in: BWBS(2), CWH(109), ESSF(3), MH(10), SBS(6)

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 cool mesothermal.

Synonyms and Alternate Names

Carex rariflora subsp. pluriflora
Carex rariflora var. pluriflora (Hultén) B. Boivin
Carex stygia T. Holm p.p., non Fr.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References