Carex aurea Nutt.
golden sedge
Cyperaceae (Sedge family)

Introduction to Vascular Plants

Photograph

© Bryan Kelly-McArthur     (Photo ID #79515)


Map

E-Flora BC Static Map

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

Species Information

General:
Perennial, tufted herb from long rhizomes; stems 5-35 cm tall, arising singly or a few together, usually spreading, shorter than the leaves.
Leaves:
Sheaths tight; blades 3 to 6 per stem, flat, borne on the lower 1/3 of the stem, 2-4 mm wide, the lower ones slightly reduced.
Flowers:
Spikes 3 to 5, the terminal spike stalked, 4-10 mm long, with male flowers, the lower spikes 2 to 4, erect, with female flowers, stalked, the stalks up to 4 cm long; bracts subtending the female spikes sheathless, 3-6 cm long, leaflike, the lower over-topping the inflorescence.
Fruits:
Perigynia globe-shaped, 2-3 mm long, 1.5-2.5 mm wide, inflated, bright orange, coarsely ribbed, with a powdery surface, beakless; female scales egg-shaped and pointed to rounded at the tips, shorter and narrower than the perigynia and spreading, reddish-brown, with greenish midribs and translucent margins; stigmas 2, rarely 3; achenes lens-shaped, 1.2-1.4 mm long.

SourceThe Illustrated Flora of British Columbia

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.

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Ecology

Ecological Framework for Carex aurea

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)
1143 75 2500
Slope Gradient (%)
5 0 57

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

278 10 342
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 2 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
83
Modal BEC Zone Class
IDF

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

AT(1), BWBS(7), CWH(1), ESSF(9), ICH(6), IDF(15), MS(9), PP(3), SBPS(14), SBS(8), SWB(3)

Habitat and Range

Moist to wet fens, bogs, gravel bars, lakeshores and steambanks in all vegetation zones; frequent in BC in and east of the Coast-Cascade Mountains; N to AK, YT and NT, E to NF and S to ME, MA, PA, OH, IN, IL, TX, NM, AZ and CA.

SourceThe Illustrated Flora of British Columbia