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

Carex cusickii Mack. ex Piper & Beattie
Cusick's sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jeremy Gatten  Email the photographer   (Photo ID #30024)

E-Flora BC Static Map
Distribution of Carex cusickii
Click here to view the full 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.



General:
Perennial, somewhat tufted herb from fibrous roots; stems 20-100 cm tall, longer than the leaves.
Leaves:
Sheaths coppery-coloured towards the tips, conspicuously red-dotted with glandular projections on the side nearest the stem, the blades of the lower ones large, firm, persistent; blades 3 or 4 per stem, borne mostly from near the bases, 2.5-6 mm wide, flat, the margins rolled-under.
Flowers:
Spikes numerous, clustered in several aggregated heads, in a 3.5-8 cm long, dense, branched inflorescence, egg-shaped, few-flowered, 4-7 mm long, 3-4 mm wide, erect to ascending with both female and male flowers, the male flowers towards the tips; bracts inconspicuous, sheathless, often similar to the female scales.
Fruits:
Perigynia narrowly triangular to egg-shaped, 2.5-4 mm long, about 1.2-1.5 mm wide, straw-coloured to brown, biconvex, smooth, strongly nerved on the outside, short-stalked, the beaks as long as the bodies, winged, the margins fine-toothed; female scales egg-shaped, equalling or slightly longer than the perigynia, pointed, brown, the margins translucent; stigmas 2; achenes lens-shaped, 1.2-1.4 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs, fens, marshes and lake margins in the lowland and montane zones; frequent in S BC, less frequent N to 55degreeN; S to WY, UT and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex cusickii

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) 150 976 2452
Slope Gradient (%) 0 9 78
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
20 215 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 5 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
24
Modal BEC Zone Class
CDF
All BEC Zones (# of stations/zone) species was recorded in: BWBS(1), CDF(7), CWH(3), ICH(1), IDF(1), IMA(1), MS(5), SBPS(2), SBS(3)

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 diandra var. ampla
Carex obovoidea Cronquist

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References