Culms densely tufted, sometimes geniculate at base, 90–110 cm tall, 4-or 5-noded, glabrous but pubescent below spike. Leaf sheath glabrous; ligule ca. 0.4 mm, scarious-membranous, apex truncate; leaf blade flat, 15–32 × 0.5–0.8 cm, abaxial surface glabrous, adaxial surface scabrous. Spike slightly curved, 8–10 × ca. 1.5 cm; rachis puberulent throughout; internodes 4–9 mm. Spikelets green, lanceolate, 15–16 mm excluding awns, with ca. 7 florets; rachilla puberulent; internodes 1.5–2 mm. Glumes oblong, slightly oblique, subequal, 7–8 mm, herbaceous, (3–)5(or 6)-veined, white pilose, margin membranous, apex acuminate, mucronate, or with awn 1–2 mm. Lemma oblong-lanceolate, 6–9 mm, pubescent and hairy distally; callus glabrous but hairy on both sides; awn straight, 10–15 mm. Palea equaling or slightly longer than lemma, ciliolate along keels distally, puberulent between keels, apex emarginate. Anthers yellow, 2.5–3 mm. Caryopsis brown, ca. 6 mm. Fl. and fr. late summer. 2n = 42*.
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