Plants to c. 1 m tall. Culms glabrous. Leaves: ligule 2–3 mm long, obtuse, erose, glabrous; auricles glabrous; blade tightly rolled, 1.5–2 mm wide, not ciliate, slightly to moderately ribbed, glabrous or scabrous on abaxial surface, villous on adaxial surface. Inflorescence pyramidal, 15–25 cm long, with whorls of long, few-flowered compound branches spreading widely; branch hairs 1.5–2 mm long. Glumes usually subequal, 7–12 mm long, acute, pilose on nerves, scabrous between. Callus 0.5–0.8 mm long, almost straight, white-sericeous. Lemma 4.5–10 mm long, tuberculate, black at maturity, mainly glabrous; coma absent; lobes minute–0.8 mm long; awn 20–50 mm long, strongly once-geniculate, often with another weak bend. Palea c. 50% of length of lemma.
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