Perennial herb. Culms erect, terete, ± smooth, without nodes, light yellow-green, 10–50 cm high, 0.5–1.5 mm diam. Leaf-sheaths yellow-brown, shiny, remaining intact; ligule membranous, to 5 mm long; leaf-blades reduced, to 3 cm long. Inflorescence hemispherical, 7–12 mm diam., occasionally reduced to 1 spikelet. Involucral bracts: 1 exceeding the inflorescence, erect or occasionally bent at right-angles to the culm, 2–5.5 cm long, the broad base with a hyaline margin; a second bract with broad base and short awn opposite the first bract. Spikelets 5.5–7 mm long; glumes 5–10, with an excurved or recurved awn. Anthers c. 3 mm long, with an apical appendage 1.0–1.5 mm long. Nutlet 2.5–3.5 mm long 1.1–1.7 mm diam., whitish, ovate to ovate-oblong; gynophore yellowish, with very small disc or disc absent.
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