Perennial herb, densely tufted, erect or lax when in deep shade, up to 1.3 m high. Leaf blades absent or minute. Culm scapose, wiry, striate, ± 0.8 mm in diam. Inflorescence a much-reduced, linear panicle 10-20 mm long, of 1 sessile or subsessile and 1 or 2 shortly stalked spikelets at each of upper (1)2 or 3 nodes of culm. Subtending bracts narrow, wiry, blade leaf-like, margins ciliate, lowest bract longer than inflorescence. Spikelets compressed, linear-lanceolate, 7-8 x 2 mm, with 1 or 2 male and 1 bisexual flower; thickened curved prolongation of axis above bisexual flower adnate to subtending glume. Glumes: fertile lanceolate, 6 mm long, keel non-excurrent to shortly excurrent. Perianth absent. Flowering time (Feb.) Apr.-July. Nutlet sessile, elliptical, including style base 2.5 mm long, obscurely 3-angled, bone-white, shining.
Densely tufted perennial to over 1 m. Spikelets brown.