Culms 6–12 m, 1.5–2.5 cm in diam., subscandent; internodes 50–80 cm, smooth; wall thin; nodal ridge not prominent; sheath scar prominent. Branches many, clustered at each node, subequal. Culm sheaths deciduous, yellow, oblong-lanceolate, 15–20 cm, thickly papery, abaxially appressed ciliate, apex truncate; ligule short; blade reflexed, narrowly lanceolate, 5–10 × 1–3 cm. Leaf sheaths pubescent; ligule conspicuous; blade ovate-lanceolate, 15–25 × 2–4 cm. Inflorescence capitate, solitary at tip of leafy branch, 1.5–2.5 cm in diam., subtended by many bractlets. Pseudospikelet 1.2–1.7 × 0.3–0.4 cm. Glumes ovate, long mucronate or awned; lemma similar to glumes; palea thin; lodicules 3, apex ciliate. Ovary ovoid-coniform; stigmas 2. Caryopsis ovoid, apex with persistent style base.
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