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

Carex crawfordii Fernald
Crawford's sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #79525)

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

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General:
Perennial, tufted herb from fibrous roots; stems 20-70 cm tall, exceeding the leaves.
Leaves:
Sheaths tight; blades flat, 1-3.5 mm wide, borne on the lower 1/3 of the stems.
Flowers:
Spikes 6 to12, aggregated into a compact, narrow head 1-3 cm long, unstalked, with both female and male flowers, the female ones towards the tips; bracts subtending the spikes sheathless, reduced, inconspicuous.
Fruits:
Perigynia narrowly lanceolate, 3.3-4 mm long, 0.8-1 mm wide, pale green or straw-coloured, more or less flattened, the margins narrowly winged nearly to the bases, the upper 1/2 fringed with teeth, lightly several-nerved on both sides, the beaks shallowly bidentate, 1 mm long, narrowly margined and toothed below; female scales elliptical, pointed, brownish with translucent margins, somewhat shorter and narrower than the perigynia; stigmas 2; achenes lens-shaped, 1 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet meadows in the lowland, steppe and montane zones; common throughout BC south of 56degreeN, rare northward and on the W slopes of the Coast-Cascade Mountains; N to AK, YT and NT, E to NF, and S to MA, PA, MI, IL, MO, MT, ID and OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex crawfordii

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) 6 1013 1680
Slope Gradient (%) 0 10 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
52 229 283
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 5 8
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
10
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: ESSF(2), IDF(5), MS(1), SBS(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 crawfordii var. vigens Fernald

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References