Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 200-300 cm long; 10-15 mm diam.; woody; without nodal roots. Culm-internodes terete; 20-30 cm long. Lateral branches dendroid. Branch complement several; in a clump. Culm-sheaths deciduous; hispid; with dark brown hairs; glabrous on margins; convex at apex; auriculate; with unequal auricles. Culm-sheath ligule 1.5 mm high; dentate and ciliolate. Culm-sheath blade triangular; narrower than sheath; deciduous; erect. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear, or lanceolate; 5.5-21 cm long; 8-18 mm wide. Leaf-blade surface pubescent; hairy abaxially.