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Caespitose perennial without rhizomes or stolons; culms up to 100(120) cm tall, erect, unbranched; basal leaf sheaths firmly chartaceous to subcoriaceous, glabrous, terete, subpersistent, the older ones eventually disintegrating into a loose cushion of glabrous fibres; leaf laminas 6–30 cm × 1–5 mm, usually involute, sometimes flat, smooth and glabrous to faintly scaberulous on the surface, scabrid to ciliate on the margins, filiform at the apex.
Spikelets 1.8–2.6(3) mm long, dark greyish-green to olive; inferior glume 1/5–1/3 the length of the spikelet, oblong, nerveless, glabrous, obtuse at the apex; superior glume 1/2–2/3 the length of the spikelet, ovate, 1-nerved, glabrous, obtuse and mucronate, abruptly acuminate, or with the nerve excurrent into an awnlet, rarely merely acute; lemma as long as the spikelet, narrowly ovate, subacute; anthers 3, (0.9)1.1–1.3(1.5) mm long.
Panicle 15–35 cm long, narrowly lanceolate to narrowly ovate, diffuse; primary branches not in whorls, smooth or scaberulous, eglandular, the spikelets evenly distributed.
Grain 0.8–1.3 mm long, obovate, truncate at the top, ± tetragonal in section.
Loosely tufted perennial with short leaves and slender culms 30–90 cm. high
The basal sheaths somewhat indurated and more or less fibrous.
