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

Carex gynocrates Wormsk. ex Drejer
yellow bog sedge (northern bog sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #79551)

E-Flora BC Static Map
Distribution of Carex gynocrates
Click here to view our NEW interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Perennial herb from long, slender rhizomes; stems 5-30 cm tall, single or a few together, longer than the leaves.
Sheaths tight; ligules wider than long; blades 3 to 5 per stem, narrowly in-rolled, borne on the lower 1/2 of the stem, about 0.5 mm wide, the lower ones persisting, reduced.
Spikes solitary, usually with both female and male flowers, the few male flowers towards the tips, sometimes the spikes with all male flowers or all female flowers, the male segment broadly cylindrical, the female segment egg-shaped, 5-15 mm long, 2-4 mm wide, erect; bractless.
Perigynia egg-shaped, 2.5-4 mm long, 1.5-2 mm wide, yellowish to brownish-black, inflated, shiny, finely and many nerved above, reflexed when ripe, short-stalked, the beaks faintly toothed, about 0.5 mm long, bidentate; female scales egg-shaped, shorter but wider than the perigynia, pointed, reddish-brown to brown, the centres lighter; stigmas 2; achenes lens-shaped, 1.2-1.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs, swamps, fens and wet meadows in the upper montane to alpine zones; common in BC in and E of the Coast-Cascade Mountains; amphiberingian, N to AK, YT and NT, E to NF and S to MA, PA, MN, MI, ND, CO, UT, NV and OR; Greenland, E Asia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Carex gynocrates

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) 7 1065 2170
Slope Gradient (%) 0 4 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
20 265 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 6 8
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: BAFA(1), BWBS(46), CWH(2), ESSF(22), ICH(5), IDF(4), MH(3), MS(9), SBPS(1), SBS(22), SWB(7)


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 dioica subsp. gynocrates (Wormsk. ex Drejer) Hult╬śn
Carex dioica var. gynocrates (Wormsk. ex Drej.) Ostenf.
Carex parallela (Laest.) Sommerf.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References