Vegetative parts: plants clumped or tufted, 0.2–0.6 m tall, basal diameter 0.05–0.5 m, crown diameter 0.2–0.5 m, with rhizomes. Rhizome very short with culms aggregated at base, 5–10 mm in diam., culms 1–5 mm apart. Fertile culms unbranched, compressed, smooth or finely rugulose, green, 0.2–0.6 m tall, diameter at base 0.5–1.5 mm, diameter at apex 0.2–1.2 mm. Sheaths persistent, with no abscission line, closely convoluted, 15–50 mm long, green with or without brown speckles, tending to grey when old, apical margins coriaceous, like the rest of the body or narrowly membranous, hyaline shoulders absent or small, rounded, hyaline shoulder 0.1 of sheath body length, apex, excluding the membranous lobes, acute or obtuse. Sheath-mucro absent or penicellate, straight and erect, 2–5 mm long. Males: male inflorescence with 2–5 spikelets or 6–10 spikelets, racemose or paniculate, 8–30 mm long, 4–15 mm wide. Male inflorescence spathes persistent, as tall as spikelets or taller than spikelets, chartaceous or cartilaginous, generally darker in the centre with pale margins. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, elliptical or ovate or obovate or orbicular, apex rounded or obtuse, 6–10 mm, 4–8 mm, with 20–50 flowers, pedicels shorter than the spikelets or absent ie spikelets sessile, terete or angular. Male bracts taller than flowers, 4–5 mm long, oblong, obtuse or acute or acuminate, cartilaginous, bract upper margin like body of bract, bract awn minute or absent, entire margins of bracts pale and membranous. Male flower 4–5 mm long. Male tepals sepals and petals the same rigidity, hyaline or chartaceous, oblong, inner and outer tepals the same length. Male outer lateral tepals keeled or winged, glabrous. Anthers 2.5–3.5 mm long, exserted from the flowers. Pistillode absent. Females: female inflorescence linear or racemose, 8–50 mm long, 4–10 mm wide, with 2–5 spikelets. Female spathes longer than the spikelets, not obscuring spikelet, persistent, cartilaginous. Female spikelet sessile or pedicel simple, elliptical or obovate, apex rounded or acute, 6–11 mm long, with 1 flowers, with 15–20 sterile bracts. Female bracts taller than flowers, erect, 5–10 mm long, oblong, acuminate, cartilaginous, apical margin like rest of bract, darker than body of bract, awn minute or absent. Female flower 3.5–5.5 mm long, without a fleshy pedicel. Female tepals membranous, glabrous and smooth, smaller than nut and not obscuring the nut surface, midrib raised, apices acute or acuminate, inner and outer whorls the same length or inner whorl shorter than outer. Female outer lateral tepals like other tepals, 2–5 mm long. Female odd outer tepal linear or oblong, 2–5 mm long. Female inner tepals linear or oblong, 1.5–4.5 mm long. Staminodes absent. Styles plumose, white, 2. Style bases fused to form a pillar. Ovary with 1 locule, indehiscent. Fruit: indehiscent fruits with a hard woody ovary wall. Perianth presence on fruits persistent, membranous, shorter than nut. Nut cap with a single row of ridges (single row of ridges may actually be the disjunction between the cap and the body of the nut, as opposed to a row of ridges on the cap.), wall tuberculate (lateral grooves/ ridges on the nut wall), 3–5 mm long, 1.8–3 mm diam., shape in side view elliptical, shape in top view round in cross section, brown. Elaiosome absent.