Vegetative parts: plants tufted, 0.4–1 m tall, basal diameter 0.03–0.1 m, crown diameter 0.2–0.5 m, compact, without spreading rhizomes or stolons. Fertile culms branching, round (not compressed) or compressed (but may be a result of pressing), finely warty, olivaceous, 0.4–1 m tall, diameter at base 2 mm, diameter at apex 0.8 mm. Sheaths closely convoluted, 10–16 mm long, olivaceous, same as the culm, apical margins narrowly membranous (reddish in colour), apex, excluding the membranous lobes, rounded. Sheath-mucro penicellate, straight and erect, 0.8 mm long. Males: male inflorescence with 2–5 spikelets or 6–10 spikelets, racemose, 30–60 mm long, 5–10 mm wide. Male inflorescence spathes persistent, shorter than spikelets (about 2/3 length of spikelets), coriaceous. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, ovate (and somewhat curved away from the inflorescence axis), apex obtuse, 5–8 mm, 3–5 mm, with 4–6 flowers, pedicels absent ie spikelets sessile. Male bracts taller than flowers (but only slightly), 5–6 mm long, ovate, acute, cartilaginous, bract awn minute or absent. Male flower 3–4 mm long. Male tepals sepals more rigid than petals, chartaceous or cartilaginous, square. Male outer lateral tepals conduplicate, glabrous. Anthers 1.5 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence racemose, 12–45 mm long, 5–10 mm wide, with 2–5 spikelets. Female spathes shorter than the spikelets (about 2/3 spikelet length), persistent, coriaceous. Female spikelet sessile, obovate (but somewhat curved), apex obtuse, 8–12 mm long, with 6–8 flowers, with 0 sterile bracts (prophylls also fertile). Female bracts taller than flowers (slightly), 4–5 mm long, ovate, acute, coriaceous, apical margin membranous, awn minute or absent. Female flower 3.5 mm long, without a fleshy pedicel. Female tepals cartilaginous, glabrous and smooth, apices obtuse, inner whorl shorter than outer. Female outer lateral tepals conduplicate, 3.5 mm long. Female odd outer tepal oblong, 3.5 mm long. Female inner tepals oblong, 3.2 mm long. Staminodes present. Styles feathery, 3. Style bases free. Ovary with 2 locules, dehiscent. Fruit: seed 1 mm long, 0.8 mm in diameter, shape in side view round, shape in diameter round in cross section, black.