Rush-like; rhizome coarse, woody, up to 8 mm. diam., covered with closely appressed, dark red, almost black, shining bracts. Culms 50–80–(100) cm. long, slightly < 2 mm. diam., closely packed, erect, rigid, smooth, green and shining, often shallowly grooved on one side. Lvs reduced to 3–4 very dark red, hard, mucronate sheaths, the 2 uppermost with a short, subulate, erect lamina; orifice of sheath not ciliate. Panicle (8)–12–20–(30) cm. long, very narrow, upright and stiff, occ. bent at the top, with ± distant fascicles of 3–5 branchlets, each fascicle subtended by a short sheath similar to those at base of culm; branchlets flexuous, flattened, with scabrid edges, often branched again, sheaths subtending secondary branchlets ciliate at the mouth. Spikelet terminating each branchlet 9–12 mm. long, 2–3–(4)-fld, lanceolate, red-brown Glumes 7–10–(14), ovate-lanceolate, acute, margins ciliate towards the tip, 4–6 lower glumes smaller, empty, 2–3 succeeding glumes fertile, uppermost 2–3 glumes sterile. Hypog. bristles 0. Stamens us. 2, occ. 3. Style-branches 3. Nut c. 1.5 × 1 mm., turgid, surface rugose, cream.