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

Carex microptera Mack.
small-winged sedge (smallwing sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Adolf Ceska  Email the photographer   (Photo ID #11453)

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Distribution of Carex microptera
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Species Information

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General:
Perennial, tufted herb from fibrous roots, stems triangular, 30-90 cm tall, exceeding the leaves.
Leaves:
Sheaths tight; blades flat, 2-4 mm wide, borne on the lower 1/3 of the stem, the lowermost leaves reduced to scales.
Flowers:
Spikes 5 to 10 aggregated into a dense head 1-2.5 cm in diameter, unstalked, with both female and male flowers, the female ones towards the tips; bracts subtending the spikes sheathless, awned.
Fruits:
Perigynia egg-shaped, 3-4.5 mm long, 1-1.5 mm wide, light green, straw-coloured, or light brown, the margins winged nearly to the bases, the upper 1/2 fringed with teeth, lightly several-nerved on the backs, with faint nerves or nerveless below, the beaks obscurely bidentate, up to 1.5 mm long, narrowly margined and toothed below; female scales elliptical, light brown, somewhat shorter and narrower than the perigynia; stigmas 2; achenes lens-shaped, 0.8-1.3 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA

Habitat / Range

Bogs, swamps, lakeshores, ditches, wet meadows and moist forests in the montane to alpine zones; frequent throughout BC east of the Coast-Cascade Mountains; N to S YT and NT, E to SK and S to SD, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex microptera

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) 565 1651 2410
Slope Gradient (%) 0 19 65
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
18 143 335
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
20
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: AT(5), ESSF(10), ICH(3), SBPS(1)

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.

Synonyms and Alternate Names

Carex festivella Mack.
Carex limnophila F.J. Herm.
Carex macloviana subsp. festivella (Mack.) A. Löve & D. Löve
Carex macloviana var. microptera (Mack.) B. Boivin
Carex microptera var. crassinervia F.J. Herm.
Carex microptera var. limnophila (F.J. Herm.) Dorn

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References