Plant solitary or loosely tufted; shoots intravaginal. Culms (40–)60–80 cm tall; nodes (3 or)4. Leaf sheaths glabrous; auricles falcate; leaf blades flat or involute, (2.5–)6–10(–30) cm × 1.5–2.5(–4) mm, veins 10–14; ligule 0.3–0.6(–1) mm, margins ciliolate or without cilia. Panicle spikelike, 13–17(–26) cm; branches 2–5 cm, 2 or 1 at lowest node. Spikelets 12–16 mm, purplish or brown (tinged greenish); florets 3–4; glumes glabrous; lower glume narrowly lanceolate, 4–5(–7) mm; upper glume lanceolate, 5.2–6.7 mm; rachilla internodes 1.8–2.2 mm; lemmas 7.5–9(–10) mm, scabrid, apex slightly notched; awns 7–15 mm; palea 7.5–8.5 mm, keels scaberulous. Anthers 2.5–3 mm. Ovary apex glabrous (immature). Fl. and fr. Jul.
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