Culms to 3 m, to 2 cm in diam.; internodes initially green, yellow in age, 20–30 cm, glaucous below nodes, glabrous; wall 2–3 mm thick, cavity pith lamellate; nodes very prominent. Culm sheaths readily deciduous, green or yellow when dry, unspotted, shorter than internodes, glabrous or sparsely setose; auricles and oral setae absent; ligule slightly arcuate, short; blade green, triangular lanceolate. Leaves 2–4 per ultimate branch; sheath glabrous; auricles small or obscure; oral setae deciduous, straight; ligule short; blade oblong-lanceolate, 8–16(–23) × 2–2.8(–4.2) cm, secondary veins 5–7-paired. Inflorescence unknown. New shoots early Apr.
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