Culms ca. 2 m, 0.8–1 cm in diam.; internodes purple-green, initially white powdery and glabrous or white puberulent, densely brown tomentose below nodes; wall 1.5–2 mm thick; supra-nodal ridge elevated, more prominent than sheath scar. Branches minutely appressed white or brown pubescent and retrorsely strigose. Culm sheaths commonly longer than internode, densely white tomentose and brown strigose or with imprints of fallen hairs; auricles absent or if present, small, sparsely fringed with scabrid oral setae; ligule 0.7–1.8 mm, puberulent, sparsely scabrid ciliate; blade erect, linear-lanceolate, 1.5–6.5 cm. Leaf auricles absent; ligule 1–2 mm, margin pale ciliate; pseudopetiole 0–7 mm; blade oblong-lanceolate, 19–34 × 4.5–7 cm, glabrous, except pubescent abaxially at base, secondary veins 9–12 pairs, tessellations square. New shoots Apr.
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