Carex brunnea —Knot Sedge—CYPERACEAE

Carex brunnea

Link to Images on Flickr.

Habitat—Grows in light-breaks in rainforest;

Distribution— North along coast from Clyde Mountain, extending farther inland to the Blue Mountains in New South Wales and Queensland.

Description—Terrestrial sedge, rhizome short; shoots densely tufted.

Local occurrences

Barrington/Gloucester Tops, Burgess Beach, Burgess Road, Cape Hawke, Cliff Road, Knappinghat Nature Reserve, Sea Acres National Park and Zamia Place Reserve.

Leaves.—Culms trigonous, smooth below, scabrous above, 25 to 80 cm long, c. 1 mm diam. Leaves shorter than or equalling culms; blade 2 to 4 mm wide.

Carex brunnea
Carex brunnea

Inflorescence— Spreading to drooping, 10 to 20 cm long, with 1 to 3 spikes per node; lowest involucral bract shorter than inflorescence. Spikes short—pedicellate to sessile, distant, drooping to spreading at maturity, 1 to 3 cm long; upper spikes androgynous (only short female portion); lower spikes androgynous (male shorter than female portion).

Flowering.—July to September

Fruit—Glumes obtuse to acute,paleto darkred—brown;femaleglumes 1.8 to 2.8 mm long. Utricles ellipsoid, numerous-nerved, 3 to 4.5 mm long, c. 1.5 mm diam., white—hispid, pale to dark red—brown; beak c. 1 mm long, with apex 2—fid or split. Style 2—fid. Nut ellipsoid to ovoid

Ripe.—November to December.