Perennial herb, long-rhizomatous, 0.1-0.4 m high. Leaves with sheaths tubular, membranous, reddish brown; blades absent. Culm ridged, terete, ± 1 mm in diam. Inflorescence head-like, of 3-8(-15) sessile spikelets, up to 10 mm in diam. Subtending bracts inconspicuous. Spikelets elliptic, 4-6(-10) x 2 mm, many-flowered. Glumes boat-shaped, obtuse, 1.8-2.0 mm long, keel non-excurrent to excurrent into minute point. Flowering time Oct., Nov., Jan., Mar.-May, July. Nutlet obovate, including gynophore ± 1.5 mm long, 3-angled, dark brown, shining, surface ± smooth. Gynophore relatively small to minute, margins lobed.
More
Rhizomatous perennial to 15 cm. Spikelets brown.