Robust, densely caespitose perennial without rhizomes or stolons; culms up to 150 cm tall, erect, unbranched, glabrous at the nodes, sometimes with a sticky glandular patch encircling the culm beneath the panicle; basal leaf sheaths glabrous, chartaceous, terete, eglandular, persistent or tardily decaying into fibres; ligule a line of hairs; leaf laminas 6–40 cm × 2–5 mm, linear, flat or involute, pilose on both surfaces, eglandular.
Panicle 14–30 cm long, elliptic to oblong-ovate, loose and open, the axis flexuous, the spikelets evenly distributed on flexuous pedicels 3–8 mm long, the primary branches flexuous, not in whorls, terminating in a fertile spikelet, pubescent to shortly pilose in the axils, eglandular.
Caryopsis 1–1.3 mm long, broadly oblong-elliptic to broadly obovate-elliptic, hollowed on the back.