Carpha capitellata Boeckeler

Perennial herb, 0.30-0.45 m high, long-rhizomatous. Leaf blades 2.5-5.0 mm wide, flat (3-angled towards apex), margins ± smooth. Culm 3-angled, 1-2 mm in diam. Inflorescence 40-150 mm long, of 1 or 2 long-stalked, partial inflorescences from each of upper 1-4 nodes, of few, ± sessile, semi-globose, head-like clusters 10-15 mm in diam. Bracts subtending partial inflorescences 1 per node, leaf-like; bracts subtending spikelet clusters inconspicuous, narrow. Spikelets lanceolate, 5-6 mm long, 2-flowered. Glumes: fertile lanceolate, 5.5 mm long, keel non-excurrent. Perianth 6, linear, rigid, antrorsely scabrid, slender bristles of unequal lengths. Flowering time July-Dec. Nutlet elliptical, 2.2 mm long, 3-angled, brown, crowned by large, persistent, scabrid style base, surface minutely tuberculate and lacunose.