Vegetative parts: plants tufted, 0.17–0.8 m tall, basal diameter 0.01–0.1 m, crown diameter 0.1–0.3 m, compact, without spreading rhizomes or stolons. Fertile culms sparingly branched, smooth or finely rugulose, olivaceous, 0.15–0.8 m tall, diameter at base 0.4–1.5 mm, diameter at apex 0.2–0.6 mm. Sheaths closely convoluted, 9–20 mm long, 0live-brown, apical margins narrowly membranous, hyaline shoulders absent, apex, excluding the membranous lobes, acuminate or acute. Sheath-mucro penicellate, straight and erect, 1.5–4 mm long, apical portions of the bracts soon decaying. Males: male inflorescence with 1 spikelet or 2–5 spikelets (usually) or 6–10 spikelets or 11–20 spikelets, racemose or paniculate, 10–70 mm long, 10–15 mm wide. Male inflorescence spathes persistent, like the floral bracts, coriaceous. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, elliptical, apex acute, 6–8 mm, 2.5–4 mm, with 4–10 flowers, pedicels absent ie spikelets sessile or shorter than the spikelets, terete or angular. Male bracts as tall as flowers, 3–4.5 mm long, ovate, acute or apiculate, cartilaginous, bract upper margin with honeycombed cells, which eventually decay (upper half of bracts), bract awn minute or absent or less than half as long as the bract body, rather dark-coloured with distinctive upper margins. Male flower 2.5–4 mm long. Male tepals sepals more rigid than petals, cartilaginous, petals hyaline or membranous, oblong, inner tepals shorter than outer tepals or inner and outer tepals the same length. Male outer lateral tepals conduplicate, keel densely villous. Anthers 1–2.5 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence paniculate or racemose, 10–80 mm long, 10–20 mm wide, with 1 spikelet or 2–5 spikelets or 6–10 spikelets. Female spathes shorter than the spikelets, persistent, coriaceous. Female spikelet sessile or pedicel simple, elliptical, apex acute, 8–14 mm long, with 2–4 flowers, with 5–10 sterile bracts. Female bracts as tall as flowers, 4–6 mm long, ovate, acute or acuminate or apiculate, cartilaginous, apical margin with honeycombed cells (upper 1/4 to upper 1/2 of bract), darker than body of bract, awn minute or absent or less than half as long as the bract body. Female flower 4–5.5 mm long, without a fleshy pedicel. Female tepals cartilaginous, keels of lateral sepals densely villous, midrib flush with the tepal body, apices acute, inner and outer whorls the same length or inner whorl shorter than outer. Female outer lateral tepals conduplicate, 4–5.5 mm long. Female odd outer tepal oblong, 3.5–5.5 mm long. Female inner tepals oblong, 3.5–5 mm long. Staminodes present. Styles feathery, white, 3. Style bases free. Ovary with 3 locules, dehiscent. Fruit: seed 1.5–1.9 mm long, (0.8–)1.03(–1.24) mm in diameter, shape in side view oblong, shape in diameter rectangular in cross section, black or grey, colliculate.