Vegetative parts: plants tufted or mat-Forming, 0.3–1.5 m tall, basal diameter 0.3–0.4 m, crown diameter 0.8–1.5 m, with rhizomes. Rhizome very short with culms aggregated at base or spreading, unbranched or sparsely branched, culms evenly spaced, 3–4 mm in diam., culms 2–20 mm apart. Fertile culms sparingly branched or branching, smooth, olivaceous, 0.3–1.5 m tall, diameter at base 2–6 mm, diameter at apex 0.5–2 mm. Sheaths closely convoluted or loosely convoluted, 10–30 mm long, brown, occasionally olivacious., upper 1/3 in colour and texture abruptly different from the base, and soon decaying, apical margins broadly membranous, hyaline shoulders absent, apex, excluding the membranous lobes, acuminate or acute. Sheath-mucro penicellate or awl- or needleshaped, straight and erect or twisted, 4–18 mm long, older sheaths truncate due to membranous apex decaying. Males: male inflorescence with indefinite spikelets, Racemose or paniculate, 35–60 mm long, 10–25 mm wide. Male inflorescence spathes caducous, taller than spikelets, coriaceous, sheath like but expanded, bearing a dark awn. Male flowers not aggregated into spikelets. Male bracts taller than flowers, 8–15 mm long, linear, acute, lax, chartaceous or membranous, bract upper margin like body of bract, bract awn minute or absent. Male flower 1.5–4 mm long. Male tepals sepals and petals the same rigidity, chartaceous or membranous, linear, inner and outer tepals the same length. Male outer lateral tepals as other tepals, glabrous. Anthers 2–3 mm long, included in the flowers. Pistillode absent. Females: female inflorescence linear or racemose, 15–50 mm long, 8–15 mm wide, with 1 spikelet or 2–5 spikelets. Female spathes longer than the spikelets, not obscuring spikelet, persistent or caducous, coriaceous. Female spikelet sessile, obovate or obtriangular, apex truncate or rounded or obtuse, 12–25 mm long, with 1 flowers, with 5–8 sterile bracts. Female bracts taller than flowers, 10–20 mm long, oblong, acuminate, cartilaginous, apical margin like rest of bract, darker than body of bract, awn less than half as long as the bract body. Female flower 8–10 mm long, with a fleshy pedicel, with no tepals or six tepals (sometimes so small that they appear absent). Female tepals membranous, glabrous and smooth, smaller than nut and not obscuring the nut surface, midrib flush with the tepal body, apices rounded or acute or acuminate, inner and outer whorls the same length. Female outer lateral tepals like other tepals, 0–6 mm long. Female odd outer tepal linear or oblong or obovate, 0–6 mm long. Female inner tepals linear or oblong or obovate, 0–6 mm long. Staminodes absent. Styles plumose, white, 2. Style bases free. Ovary with 1 locule, indehiscent. Fruit: indehiscent fruits with a hard woody ovary wall. Perianth presence on fruits absent or persistent, membranous, shorter than nut. Nut apex smooth, without a distinct cap, wall smooth or wall pitted, (5.33–)7.9(–9.33) mm long, (2.67–)3.6(–4.17) mm diam., shape in side view elliptical or oblong (barrel-shaped), shape in top view round in cross section, black. Elaiosome present, green, 2–3 mm long, less than half as long as nut.