Culms erect, 60–90 cm tall, 3-noded, glabrous. Leaf sheath glabrous; leaf blade flat when fresh, soon involute on drying, 5–15 × 0.3–0.5 cm, stiff, abaxial surface glabrous, adaxial surface puberulent. Spike ca. 10 × 1 cm. Spikelets purplish stramineous, 12–15 mm excluding awns, with 4 or 5 florets. Glumes lanceolate-oblong, 4–5 mm or distal glume slightly longer, 1–3-veined, hirsutulous along veins, apex acute. Lemma laxly or distally densely hirsute; first lemma ca. 10 mm; awn 5–10 mm, scabrous. Palea shorter than lemma, ciliate along keels distally, apex emarginate or truncate. Anthers nearly black. Fl. and fr. late summer. 2n = 42*.
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