Perennial, often straggling. Culms decumbent and rooting at base, woody, 1.5–3.5 m tall, 1.5–5 mm in diam., fastigiately branched, nodes glabrous or pubescent. Leaf sheaths glabrous, bearded at mouth; leaf blades linear-lanceolate, 6–15 × 0.3–0.6 cm, glabrous or hispidulous, base tapering, apex setaceously acuminate; ligule ca. 0.7 mm. Panicle pyramidal, 5–12 × ca. 4 cm; branches pilose in axils; racemes composed of triads, sometimes with 1 or 2 additional spikelet pairs, greenish or pinkish; rachis internodes and pedicels long ciliate. Sessile spikelet 2.1–2.9 mm; lower glume elliptic-oblong or lanceolate, back 2–5-veined, slightly convex, glossy, glabrous or hispidulous, upper margins keeled, ciliate-hispid; upper glume ciliate along margins; awn of upper lemma 0.6–1.5 cm. Pedicelled spikelet linear-lanceolate, up to twice length of sessile spikelet. Fl. and fr. Aug–Dec. 2n = 40.
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