Culms 2–4 m, 5–10 mm in diam.; internodes terete; nodes obscure. Branches 3 per node. Culm sheaths gradually deciduous, purple-brown to yellow, ca. 1/2 as long as internodes, glabrous or sparsely setose, margins densely ciliolate; ligule arcuate or truncate, slightly concave, scabrid, ciliolate; blade erect, narrowly ovate-lanceolate, glabrous, basally 1/2–3/5 as wide as sheath apex, margins serrulate, apex acuminate. Leaves 5–10 per ultimate branch; sheath purple, glabrous or slightly hairy, margins ciliate; auricles falcate or suborbicular; oral setae ca. 5 mm; ligule truncate, short, slightly hairy, entire or laciniate; pseudopetiole ca. 4 mm; blade narrowly lanceolate or oblong-lanceolate, 12–20(–32) × 1.2–2.5(–3.7) cm, both surfaces glabrous, secondary veins 5–9-paired, base broadly cuneate, margins serrulate, apex acuminate. Inflorescence paniculate or racemose, terminal; spikelets 3–4 cm, pedicel 5–15 mm; florets 4–9; rachilla internodes 4–6 mm. Glumes 2; lemma glabrous, margins densely ciliolate; palea shorter than lemma. Stamens 3. Ovary oblong, glabrous; styles very short; stigmas 3. New shoots Mar.
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