Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 600-700 cm long; 5-10 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; mid-green and purple; mottled; distally glabrous. Culm-nodes swollen. Lateral branches dendroid; extravaginal. Branch complement several; in a clump; with subequal branches; thinner than stem. Culm-sheaths deciduous but leaving a persistent girdle; purple; glabrous; without auricles. Culm-sheath ligule 1.5 mm high. Culm-sheath blade linear; erect; 1 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1 mm long. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1-0.3 cm long. Leaf-blades deciduous at the ligule; ovate; 7.5-17 cm long; 16-33 mm wide. Leaf-blade apex acuminate.
Inflorescence a panicle; embraced at base by subtending leaf. Panicle open; ovate; 9-17 cm long; 1-1.5 cm wide. Primary panicle branches ascending; 2-3 cm long. Spikelets solitary. Fertile spikelets pedicelled.