Perennial climbing rhizomatous bamboo, woody culms to 30m, glabrous leaves to 40mm x 4mm, scabrous margins. Racemes to 10mm long of yellow flowers, spikelets to 10mm long, lower glumes to 1.5mm long, upper glumes to 2.7mm long, lower lemma to 4.2mm long, coriaceous fertile lemma to 6.4mm long