Culms densely tufted, 60–90 cm tall, ca. 2 mm in diam., 3-or 4-noded, glabrous but nodes pubescent. Leaf sheath glabrous; ligule ca. 0.5 mm, scarious-membranous, apex truncate; leaf blade flat or slightly involute, 18–20 × 0.5–0.7 cm, abaxial surface glabrous, adaxial surface scabrous. Spike erect or slightly curved, 14–20 × ca. 1 cm; rachis scabrous or hirsute; internodes 7–10 mm. Spikelets green, lanceolate, 15–17 mm excluding awns, with 6 or 7 florets; rachilla pubescent; internodes 1.5–2 mm. Glumes oblong, nearly oblique, 5-veined, glabrous, margin broadly membranous, apex acuminate, mucronate, or with awn 1–2 mm; proximal glume 9–11 mm; distal glume 10–12 mm. Lemma narrowly lanceolate, 8–10 mm excluding awn, herbaceous, densely villous, margin membranous; callus hairy; awn 2–6 mm. Palea shorter than lemma, ciliate along keels distally, apex truncate. Anthers yellowish, 3.5–4 mm. Caryopsis brown. Fl. and fr. late summer. 2n = 42*.
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