Culms ca. 3.5 m, to 1.5 cm in diam.; internodes cylindrical, to 35 cm, glabrous, initially densely pruinose, retrorsely setose; nodes densely pruinose, dark gray powdery when old; supra-nodal ridge as elevated as sheath scar, both slightly prominent. Branches 5–7, slightly spreading. Culm sheaths green, margins distally pink, densely pruinose, pale brown setose, margins densely ciliate; auricles and oral setae absent; ligule green, slightly pink, truncate or vaulted, ca. 5 mm, irregularly crazed, densely pruinose, slightly rough, margin sparsely ciliate or not; blade reflexed, green, slightly purple, base slightly constricted, margins serrate, apex acuminate. Leaves 3 or 4 per ultimate branch; sheath setose, margins densely ciliate; auricles inconspicuous or small, rounded or elliptic; oral setae radiate, slightly rough; ligule truncate or vaulted, to 1.5 mm, thin, glabrous or slightly rough; pseudopetiole ca. 4 mm; blade narrowly ovate to elliptically lanceolate, 9–17.5 × 1.4–2.5 cm, abaxially pubescent, glabrescent, adaxially glabrous, secondary veins 5–7-paired, base broadly cuneate or obtusely rounded, margins serrulate or one entire, apex acuminate. Inflorescence unknown. New shoots early May.
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