Culms ca. 8 m, ca. 3 cm in diam.; internodes initially green, lower nodes distally blotched purple, becoming yellow-green in age, to 20 cm, white powdery, glabrous; wall 2–3 mm thick; nodes initially purple, nodal ridge elevated, more prominent than sheath scar. Culm sheaths pale green-purple or yellow-green, at lower and or basal nodes with purple blotches and small spots, initially white powdery, scabrous between veins and minutely strigose, at upper nodes unmarked, usually glabrous; auricles and oral setae absent; ligule purple or yellow-green, peaked, fragile, 4–8 mm, usually decurrent on one or both sides, erose or lacerate, ciliolate; blade reflexed, green, linear, flat or ± wavy on lower sheaths. Leaves 2 or 3 per ultimate branch; auricles and oral setae absent; ligule arcuate, long, brittle; blade linear-lanceolate, 7–11 × 1.2–1.5 cm, both surfaces glabrous, rarely abaxially pilose proximally. New shoots Apr.
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A bamboo. It grows about 8 m tall. The culms are 3 cm across. The internodes are 20 cm long. There are 2 or 3 leaves on the last branches. The leaf blade is 7-11 cm long by 1-2 cm wide.
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