Carex crawfordii Fernald
Crawford's sedge
Cyperaceae (Sedge family)
Introduction to Vascular Plants
Crawford's sedge
Cyperaceae (Sedge family)
Introduction to Vascular Plants
Species Information
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.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration 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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1013 | 6 | 1680 |
| Slope
Gradient (%) |
10 | 0 | 70 |
|
Aspect (degrees) |
229 | 52 | 283 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
5 | 2 | 8 |
| Modal
Nutrient Regime
Class |
B | ||
| #
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) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and 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.Status Information
Synonyms
Synonyms and Alternate Names:
Carex crawfordii var. vigens Fernald