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

Carex nigricans C.A. Mey.
black alpine sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #19685)

E-Flora BC Static Map
Distribution of Carex nigricans
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, loosely tufted herb from stout, creeping rhizomes; stems 10-35 cm tall, longer than the leaves.
Leaves:
Sheaths tight, bladeless below; blades 4 to 9 per stem, flat or channeled, borne on the lower 1/4 of the stem, 1-3 mm wide.
Flowers:
Spikes solitary, cylindrical to egg-shaped, 8-20 mm long, erect, with both female and male flowers, the male flowers towards the tips, rarely the spikes with all male or all female flowers; bractless.
Fruits:
Perigynia lanceolate to egg-shaped, 3-4.5 mm long, 1-1.5 mm wide, appressed but spreading and reflexed at maturity, smooth, nerveless, long-stalked, the beaks short, bidentate; female scales lanceolate to egg-shaped, much shorter than the perigynia, deciduous, pointed to rounded, dark brown, the midribs pale, the margins thin; stigmas 3; achenes 3-angled, 1.5-2 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet meadows, stream margins and snowbed sites in the montane to alpine zones; common in BC south of 54degreeN, less frequent northward; N to AK, E to SW AB and S to CO, UT and OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex nigricans

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) 16 1894 2640
Slope Gradient (%) 0 17 220
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 213 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
1080
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: AT(92), BAFA(39), CMA(57), CWH(3), ESSF(657), ICH(1), IDF(1), IMA(61), MH(106), MS(2), SBS(2), SWB(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 alpine tundra & boreal.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References