Culms 3–14 m, 2–7 cm in diam.; internodes 15–50 cm; wall rather thick; nodes slightly prominent; branching from basal nodes up. Branches several to many, clustered, central 3 dominant. Culm sheaths deciduous, leathery, asymmetrical, broadly arched, densely stiffly brown hairy, distal margins initially ciliolate, apex slightly slanted along outer side; auricles unequal, not slanted, slightly wrinkled; larger auricle oblong to lanceolate, ca. 1.5 × 0.7 cm; smaller auricle narrowly ovate to ovate-lanceolate, ca. 1/3 size of larger one; oral setae undulate, brown; ligule ca. 5 mm, finely dentate, ciliolate; blade erect, slightly asymmetrically triangular, base slightly rounded and joined to auricles for ca. 2 mm, ca. 5/6 width of sheath apex, abaxially sparsely stiffly dull brown hairy or glabrous; adaxially scabrous or densely stiffly dull brown hairy between veins, apex shortly acuminate, apiculate. Leaf blade linear, 10–25 × 1.2–2.5 cm, abaxially densely pubescent, adaxially glabrous. Pseudospikelets solitary or many and clustered at each node of flowering branches, linear, 2.5–4 × 0.5–0.7 cm; florets 4–6. Glumes 2, subovate, ca. 5 mm, 9–11-veined, apex acute, mucronate; lemma ovate-lanceolate, ca. 1.3 cm, 17–20-veined, apex acute, mucronate; palea lanceolate, ca. 1 cm, keels ciliolate, 7-veined between and 2-veined on either side of keels, apex truncate; lodicules 3, nearly broadly elliptic, ca. 1.8 mm, margins long ciliate. Anthers ca. 6 mm. Ovary obovoid; style short; stigmas 3. Caryopsis unknown.
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