Culms subscandent, to 10 m or more, ca. 8 mm in diam., internodes to 30 cm; nodes with persistent, raised sheath base; wall ca. 2.5 mm. Branches many, central branch obviously dominant, often similar to main culm, secondary branches slender. Culm sheaths tardily deciduous or persistent, narrowly triangular, thinly leathery, white setose, margins apically long ciliate; auricles minute; ligule truncate, ca. 5 mm, serrate, fimbriate; blade reflexed, lanceolate, readily deciduous. Leaves 3–5 per ultimate branch; sheath ca. 4.5 cm, margins ciliolate; auricles projecting, hispidulous; oral setae pronounced, initially purple, curving, to 1.5 cm; ligule developed; blade lanceolate, 13–20 × 0.7–2.2 cm, transverse veins not distinct. Inflorescence unknown. New shoots Aug.
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