Perennial, base swollen; basal sheaths woolly with golden brown hairs, becoming fibrous. Culms 0.7–2 m tall, 2–5 mm in diam., white-villous below inflorescence, nodes farinose, sometimes pilose. Leaf sheaths glabrous or pilose; leaf blades linear, 25–50 × 0.4–0.7 cm, adaxial surface farinose, white-pilose at base, otherwise glabrous, apex finely acuminate; ligule ca. 1 mm. Racemes 4–7(–13) on a 3–4 cm axis, 10–25 cm, hairs whitish, pale yellowish or golden brown; rachis internodes and pedicels 2/3 as long to subequaling spikelet, ciliate. Sessile spikelet 4.6–5.7 mm, dark brown; callus hairs 1/6–1/3 spikelet length; lower glume narrowly lanceolate-oblong, back concave, villous below middle, hairs evenly spread or concentrated at flanks, veinless between keels, upper keels stiffly ciliate, apex subobtuse; upper lemma narrow, margins pilose, 2-toothed in upper 1/3; awn 1.5–2 cm. Anthers ca. 3.5 mm. Fl. and fr. Aug–Nov.
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