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

Carex lachenalii Schkuhr
two-parted sedge (hare's-foot sedge; twotipped sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants
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Distribution of Carex lachenalii
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Species Information

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General:
Perennial, somewhat tufted herb from elongate fibrous roots; stems dark green, 5-25 cm tall, longer than the leaves.
Leaves:
Sheaths tight; blades numerous, borne on the lower part of the stem, 1.5-2 mm wide, flat.
Flowers:
Spikes 3-6 in a 0.5- to 1.5-cm long, dense head, occasionally with the lowermost spike separate, egg-shaped, several-flowered, 2-3 mm long, ascending, with both female and male flowers, the female flowers towards the tips, the male flowers inconspicuous, the top spike larger than the lower ones; bracts lacking.
Fruits:
Perigynia egg-shaped, 2.5-3 mm long, 0.8-1 mm wide, brownish, minutely whitish-dotted, biconvex, smooth, nerved, especially above, unstalked, the beaks 0.25 mm long, smooth, not cleft; female scales egg-shaped, covering most of the perigynia, pointed, green, with green midribs; stigmas 2; achenes lens-shaped, 1.5 mm long, filling the perigynia.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to moist streambanks, snowbeds, rocky places and fens and bogs in the subalpine and alpine zones; infrequent throughout BC in and E of the Coast-Cascade Mountains; circumpolar, N to AK, YT and NT, E to NF and S to CO and UT; Greenland, Eurasia, New Zealand.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Carex lachenalii

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) 224 1712 2324
Slope Gradient (%) 0 8 47
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
10 332 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 5 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
56
Modal BEC Zone Class
BAFA
All BEC Zones (# of stations/zone) species was recorded in: AT(3), BAFA(23), ESSF(18), ICH(1), IMA(2), MH(1), MS(2), SBPS(1), SBS(1), 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 not evaluated, unknown or variable.

Synonyms and Alternate Names

Carex bipartita auct. non All.
Carex bipartita var. austromontana F.J. Herm.
Carex lagopina
Carex tripartita

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References