Culms laxly tufted, erect, 100–160 cm tall, ca. 5 mm in diam., 4-or 5-noded, smooth, glabrous. Leaf sheath glabrous; ligule lacerate, apex obtuse; leaf blade flat, 15–25 × 0.5–1 cm, abaxial surface hirsutulous along veins, adaxial surface pubescent. Spike erect, 9–15 cm; rachis margin shortly ciliate; internodes 5–10 mm. Spikelets 1 per node, green or purplish green, 11–13.5(–18.5) mm, with 3–5 florets. Glumes linear-lanceolate, 5–7-veined, densely hirsutulous abaxially, margin submembranous, apex acuminate or with awn 1–1.5 mm; proximal glume 9–10 mm; distal glume 10–11 mm. Lemma lanceolate, puberulent abaxially, apex unequally 1-toothed on each side; first lemma 11–12.5 mm; awn 1–2.5 mm. Palea shorter than lemma, puberulent abaxially, ciliolate along keels. Fl. and fr. Jul–Aug.
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