Leptomorph bamboo with running rhizomes. Culms 5-6m high, forming a fairly dense stand because of thick foliage masses. Culm sheaths brown; lamina missing. Culms deep green, middle and upper internodes flattened. Nodes puberulent. Petiole with swollen pad at base; lamina bicoloured below (2/3 glaucescent). Like the common riverbank plant in Wanganui.