Vegetative parts: plants tangled, 0.3–1 m tall, with stolons. Fertile culms branching, compressed (often with a rib along the narrow angle). Margins of compressed culms ribbed distinct rib present. Fertile culms smooth or finely warty (especially along the ribs), green, 0.3–1 m tall, diameter at base 0.5–1.5 mm, diameter at apex 0.4–0.9 mm. Branch axil indumentum absent or present. Sheaths persistent, with no abscission line, closely convoluted, 8–20 mm long, green, the same colour as the culms, eventually turning gray-brown, apical margins narrowly membranous, hyaline shoulders membranous margins continuing behind awn, hyaline shoulder 0.1 of sheath body length, apex, excluding the membranous lobes, acute. Sheath-mucro awl- or needleshaped (really a folded, unifacial continuation of the sheath), straight and erect, 2–5 mm long, sheath conduplicate, the awn really the unifacial continuation of the sheath. Males: male inflorescence with 2–5 spikelets or 6–10 spikelets, racemose or paniculate (the main axis branches once or several times), 15–60 mm long, 5–10 mm wide. Male inflorescence spathes persistent, taller than spikelets, chartaceous or cartilaginous. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, oblong or ovate or orbicular or undifferentiated, apex undifferentiated, 3–10 mm, 3–5 mm, with 2 flowers, pedicels absent ie spikelets sessile or shorter than the spikelets, terete or angular. Male bracts as tall as flowers or taller than flowers, 2.5–6 mm long, ovate, acute, chartaceous, bract upper margin like body of bract, bract awn minute or absent, generally the upper bract about as tall as the flower, the lower bract much taller. Male flower 2.5–4.5 mm long. Male tepals sepals more rigid than petals, chartaceous, petals chartaceous, linear, inner tepals shorter than outer tepals or inner and outer tepals the same length. Male outer lateral tepals conduplicate, glabrous. Anthers 1.2–2 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence sparsely paniculate, 5–50 mm long, 3–25 mm wide, with 1 spikelet or 2–5 spikelets or 6–10 spikelets. Female spathes longer than the spikelets, not obscuring spikelet, persistent, coriaceous or cartilaginous. Female spikelet sessile, obovate, apex truncate, 5–13 mm long, with 1 flowers, with 0 sterile bracts. Female bracts taller than flowers or at least twice as long as flowers, 6–10 mm long, linear or ovate, acute, chartaceous or cartilaginous, apical margin like rest of bract, same as body of bract, awn minute or absent. Female flower 3–6 mm long, without a fleshy pedicel. Female tepals chartaceous or cartilaginous, glabrous and smooth, 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 like other tepals, 3–6 mm long. Female odd outer tepal linear or ovate, 3–6 mm long. Female inner tepals linear or ovate, 3–4 mm long. Staminodes present. Styles feathery, 3. Style bases free. Ovary with 1 locule, dehiscent.