Perennial herb, 0.3-0.9 m high. Leaf blades 4-6 mm wide, flat to V-shaped. Culm nodose, 3-angled, 1.5-2.0 mm in diam. Inflorescence an interrupted panicle, apical co-florescence ± 35 x 15 mm. Subtending bracts: lowest with sheath ± 30 mm long. Spikelet bracts (glumes): female ovate, 3-4 x 1.6 mm, scabrid awn up to 2.5 mm long. Perigynium shortly stalked, elliptic, ± 4.5 x 1.6 mm (including ± 1 mm long rostrum), 3-angled, nervose, golden-brown. Flowering time Aug., Nov.-Feb., Apr. Nutlet elliptic, ± 2.8 x 1.5 mm, 3-angled, crowned by semi-persistent style base.