Perennial herb, up to 0.3 m high. Leaves short, blades 3 mm wide. Flowers: inflorescence a single head of sessile spikelets, 10-12 mm in diameter, green; bracts 3 or 4, 30-50 mm long; spikelets 6-10, ± oblong, brownish black with green; glumes and nutlets abscising individually leaving a persistent rachilla; glumes many per spikelet, imbricate; Nov.-Jan.
Perennial herb, up to 220 mm tall. Leaves short, 3 mm wide. Inflorescence 10-12 mm in diameter. Bracts 3 or 4, 30-50 mm long. Spikelets 6-10. Glumes imbricate, dark brown.