Plants forming loose hummocks or tufts c. 0.45 m high, 0.07–0.3 m wide, with prop roots, sometimes stoloniferous, resinous on foliage and culms. Flowering culms 0.6–2 m high. Leaves: sheath strongly nerved, mostly glabrous, ciliate on upper margins (no flat fan-shaped sheaths observed); orifice pubescent or bearded with hairs to 5 mm long; blade curved or flexuose or rigidly straight, folded or sometimes flat, to 35 cm long, 0.7–2 mm wide, pseudopetiolate, with smooth or sparsely tuberculate margins. Panicles linear-oblong and dense (rarely lanceolate and loose), 10–51 cm long, 1–3.5 (–7) cm wide; axis angular, strongly ribbed; branches alternate or whorled, angular, to 2.5 (–9) cm long, sometimes further divided, usually scabrous-pubescent near axils. Spikelets usually lanceolate, (7–) 9–12 (–26) mm long, 3–5 (–7) mm wide, usually closely (3–) 5–9 (–17)-flowered; pedicel 1–11 mm long; rachilla internodes elliptic at apex. Glumes ±equal, lanceolate or oblong, (3–) 4.5–11 mm long, entire, acute or acuminate, muticous or shortly mucronate, usually scarious to cartilaginous, 3–5 (–7)-nerved, glabrous or with ciliate margins. Callus obtuse, with white hairs to 2.5 mm long. Basal lemma 4–10 mm long (including lobes); body indurated, yellow, white-hirsute at base and midnerve and submargins, winged in upper part, the wings extending along outer side of lateral lobes; lobes 1.5–5 mm long, acuminate, cartilaginous, subequal and 3-nerved or the midlobe longer and 5-nerved, usually subulate, bristle-like, sometimes (especially laterals) flat. Palea slightly longer than lemma body; body narrowly elliptic-oblong or lanceolate, cartilaginous to indurated, scarious or hyaline towards apex, glabrous and smooth; apex beaked, scabrous to ciliate; keels winged. Anthers 2.1–2.5 mm long.
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