Rhizome short, descending. Stems tufted, 24–32 in. long, rather robust, at the top trigonous and glabrous. Leaves 8–12 in. long, flat, up to 1/8 in. broad, many-striate, at the top suddenly narrowed, glabrous; sheaths with long white hairs in the throat. Head 1, large, of 6–7 spikelets; bracts 2–3, lower up to 1 1/2 in. long by 1/12 in. broad in the lower part, glabrous, conspicuously scarious on the edges. Spikelets 3/4 in. long and upwards, elongate-lanceolate, many-flowered. Glumes 1/3 in. long, ovate, obtuse, minutely puberulous, rusty-brown. Style (the unbranched part) nearly 1/4 in. long, slender, glabrous; branches 3, linear, much shorter. Nut 1/4– 1/3 the length of the glume, trigonous, obovoid, obtuse, pallid, obscurely transversely wavy lineate; style-base remaining behind on the nut, conic, dark-brown.
