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

Carex chordorrhiza Ehrh. ex L. f.
cordroot sedge (creeping sedge; string sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #16795)

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Distribution of Carex chordorrhiza
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Species Information

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General:
Perennial herb from long rhizomes and/or stolons; stems 10-30 cm tall, arising singly, branched at the bases into several sterile shoots, much longer than the leaves.
Leaves:
Sheaths purplish, reddish-brown or straw-coloured, the lower ones lacking blades; blades 1 to 3 from near the bases, 1-5 cm long, 1-2 mm wide, flat or sometimes folded.
Flowers:
Spikes 3 to 5, egg-shaped, 5-12 mm long, 3-4 mm wide, erect, clustered, with both female and male flowers, the male flowers towards the tips; lowermost bract scalelike.
Fruits:
Perigynia egg-shaped, 2.5-3.5 mm long, 1.8-2.2 mm wide, yellowish-brown or brownish, thick, convex, smooth, shiny, strongly nerved, wingless, short-stalked, the beaks short, 0.3-0.5 mm long; female scales egg-shaped, slightly longer than the perigynia, pointed, brown, the margins translucent; stigmas 2; achenes lens-shaped, 1.2-2 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs and fens in the montane zone; common in C BC, rare southward; circumpolar, N to AK, YT and NT, E to NF and S to VT, IN and IA; Iceland, Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex chordorrhiza

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) 200 858 1480
Slope Gradient (%) 0 0 9
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
170 322 338
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 7 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
124
Modal BEC Zone Class
SBS
All BEC Zones (# of stations/zone) species was recorded in: BWBS(10), CWH(2), ESSF(1), ICH(10), IDF(6), MS(2), SBPS(24), SBS(68)

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