Vegetative parts: plants tufted, 1–2 m tall, basal diameter 0.2–0.3 m, crown diameter 0.5–1 m, compact, without spreading rhizomes or stolons. Fertile culms sparingly branched, round (not compressed), smooth, speckled golden, 1–2 m tall, diameter at base 3–4 mm, diameter at apex 0.5–1.3 mm. Sheaths persistent, with no abscission line, closely convoluted, 8–35 mm long, dark brown, grey speckled, apical margins narrowly membranous or broadly membranous, hyaline shoulders tall, acute or membranous margins continuing behind awn, hyaline shoulder 0.2 of sheath body length, apex, excluding the membranous lobes, truncate. Sheath-mucro absent, pale-membranous at the upper margins, these soon decaying, often falling with the acuminate apex. Sterile branch leaf-sheath 5–12 mm long. Males: male inflorescence with 2–5 spikelets or 6–10 spikelets, racemose or paniculate, 20–110 mm long, 7–30 mm wide. Male inflorescence spathes persistent, shorter than spikelets (larger than the bracts), coriaceous, larger than the bracts, but the apices decay soon. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, ovate or elliptical, apex rounded or obtuse, 10–17 mm, 7–12 mm, with 20–30 flowers, pedicels absent ie spikelets sessile or shorter than the spikelets, terete or angular. Male bracts as tall as flowers or taller than flowers, 5–7 mm long, obovate, acuminate (almost apiculate), cartilaginous, bract upper margin with honeycombed cells, which eventually decay, bract awn minute or absent or less than half as long as the bract body, closely imbricate, membranous at the upper margins. Male flower 4.5–5 mm long. Male tepals sepals more rigid than petals, cartilaginous, petals membranous, linear or oblong, inner tepals shorter than outer tepals or inner and outer tepals the same length. Male outer lateral tepals conduplicate, keel densely villous. Anthers 2–2.5 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence 15–90 mm long, 8–25 mm wide, with 1 spikelet or 2–5 spikelets. Female spathes shorter than the spikelets, persistent, coriaceous. Female spikelet pedicel sparsely branching, ovate, apex rounded or acute, 13–25 mm long, with 20–35 flowers, with 4–6 sterile bracts. Female bracts taller than flowers, straight and spreading, 7–12 mm long, obovate, acuminate or apiculate, cartilaginous, apical margin with honeycombed cells, darker than body of bract, awn less than half as long as the bract body. Female flower 5–7 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 (slightly). Female outer lateral tepals conduplicate, 5–7 mm long. Female odd outer tepal linear or oblong, 5–6.5 mm long. Female inner tepals linear or oblong, 4.5–6 mm long. Staminodes present. Styles feathery, white, 3. Style bases free. Ovary with 2 locules, dehiscent. Fruit: seed (1.4–)1.59(–1.64) mm long, (0.8–)0.89(–0.96) mm in diameter, shape in side view elliptical or oblong, shape in diameter triangular in cross section, grey (black with brown ridges?), colliculate.