Carex diandra Schrank
lesser-panicled sedge (lesser tussock sedge)
Cyperaceae (Sedge family)

Introduction to Vascular Plants


© Adolf Ceska     (Photo ID #20765)


E-Flora BC Static Map

Distribution of Carex diandra
Click here to view the full interactive map and legend

Species Information

Perennial, somewhat tufted herb from fibrous roots; stems 30-100 cm tall, roughened on the angles, longer than the leaves.
Sheaths not coppery-coloured, conspicuously red-dotted with glandular projections on the side nearest the stems, the blades of the lower ones large, firm, persistent; blades 3 or 4 per stem, mostly from near the base, 1-2.5 (3) mm wide, flat, the margins rolled-under.
Spikes numerous in a 2- to 5-cm long, narrow head, egg-shaped, few-flowered, 4-5 mm long, 3-4 mm wide, erect or mostly ascending, with both female and male flowers, the male flowers towards the tips; bracts inconspicuous, sheathless, often similar to the female scales.
Perigynia broadly egg-shaped, 2.5-3 mm long, 1-1.3 mm wide, straw-coloured to usually dark brown, biconvex, smooth, strongly nerved on the outside, short-stalked, the beaks as long as the bodies, slightly bidentate, not winged, the margins obscurely 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.

SourceThe Illustrated Flora of British Columbia


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.

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA


Ecological Framework for Carex diandra

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




Elevation (metres)
1022 200 2020
Slope Gradient (%)
0 0 34

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

135 20 358
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 2 8
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BWBS(19), CWH(1), ESSF(3), ICH(15), IDF(27), MH(1), MS(28), PP(1), SBPS(35), SBS(33), SWB(3)

Habitat and Range

Bogs, swamps and fens in all but the alpine zone; common in BC in and east of the Coast-Cascade Mountains, rare in SW BC; circumboreal, N to AK, YT and NT, E to NF and S to NH, PA, OH, IL, IN, MO, NE, NM, UT, NV and CA; Iceland, Eurasia.

SourceThe Illustrated Flora of British Columbia