Giant pachymorph bamboo with culms 14-15m high and to 12cm diameter. Culm sheaths green, brownish or pinkish-brown, somewhat streaked; hairs very ephemeral; sheath lamina 7-8xc.4cm, dark brownish on outside, reflexing. Nodes with several branches, one greater than the others, flattened towards shoot ends. Leaves more or less distichously arranged, at least on strong young shoots. Leaves to about 50x10cm. Sheets A - E.