Vegetative parts: plants tufted, 0.2–0.4 m tall, basal diameter 0.01–0.1 m, crown diameter 0.1–0.3 m, compact, without spreading rhizomes or stolons or with rhizomes. Fertile culms unbranched, finely warty or rugose, olivaceous or speckled golden, 0.2–0.4 m tall, diameter at base 0.2–0.75 mm, diameter at apex 0.2–0.6 mm. Sheaths absent or one per culm (or none, with the sheaths clustered at the base of the culm), closely convoluted, 15–20 mm long, brown, apical margins broadly membranous, hyaline shoulders absent, apex, excluding the membranous lobes, acuminate or acute. Sheath-mucro penicellate or hair-like, straight and erect or twisted, 5–10 mm long, clustered at base of culms. Males: male inflorescence with indefinite spikelets, Racemose or paniculate, 30–80 mm long, 3–5 mm wide. Male inflorescence spathes caducous, taller than spikelets, cartilaginous. Male flowers not aggregated into spikelets. Male bracts taller than flowers, 5–7 mm long, linear (hairlike), acute, lax, membranous, bract upper margin like body of bract, bract awn minute or absent, very similar to the tepals. Male flower 3.5–6 mm long. Male tepals membranous, linear. Male outer lateral tepals as other tepals, glabrous. Anthers 1–2.5 mm long, included in the flowers. Pistillode absent. Females: female inflorescence linear or racemose, 10–60 mm long, 2–4 mm wide, with 1 spikelet or 2–5 spikelets (usually only two per inflorescence). Female spathes longer than the spikelets, obscuring spikelet, persistent, cartilaginous. Female spikelet sessile, linear or elliptical, apex acute, 7–10 mm long, with 1 flowers, with 2–4 sterile bracts. Female bracts taller than flowers, 7–11 mm long, oblong, acuminate, chartaceous or cartilaginous, apical margin like rest of bract, same as body of bract, awn minute or absent. Female flower 6.5–7.5 mm long, without a fleshy pedicel. Female tepals chartaceous, glabrous and smooth, smaller than nut and not obscuring the nut surface, midrib flush with the tepal body, apices obtuse or acute, inner and outer whorls the same length. Female outer lateral tepals like other tepals, 5–7 mm long. Female odd outer tepal oblong, 5–7 mm long. Female inner tepals oblong, 5–7 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 persistent, membranous, shorter than nut. Nut cap with several rows of ridges, wall tuberculate, 6.3–7.5 mm long, 1.6–2 mm diam., shape in side view oblong, shape in top view round in cross section, brown. Elaiosome absent.