Cyperus trinervis R.Br.

Brown, R. (1810) Prodromus Florae Novae Hollandiae : 213. Type: (J.T.).

Tufted perennial with short rhizome. Culmns trigonous, 15-50 cm tall with fibrous remains of leaf sheaths.

Leaves as long or shorter tan the culms, 2-3 mm wide, ligule well-developed.

Inflorescence simple, with 3-8 branches that are up to 8 cm long; involucral bracts leaf-like with one or two longer than the inflorescence; spikelets flattened, 3-8 per cluster, 4-14 mm long, 10-40 -flowered; glume ca. 1.5 mm long, with green keel with a single nerve on either side of keel.

Nut trigonous, ellipsoid, very finely papillate, 0.8-1 mm long, apiculate, dark brown, about length of glume.

Features not available.

Occurs in NT, CYP, NEQ and southwards to north eastern NSW. Altitudinal range from 60-380 m. Grows in rainforest, Eucalypt forest and moist places along drainage lines and creeks in various types of woodland.