Tufted perennial, the basal sheaths becoming fibrous.
Superior lemma bidenticulate; awn 2.5–4 cm. long.
Culms 30–75 cm. high, with distinct dark nodes.
Callus 0.4–0.7 mm. long, oblong, emarginate.
Densely tufted perennial, 1–1·2 m. high
Panicle 4–12 cm. long, spiciform.
Spikelets 9–11 mm. long.
Stamens 2.