"Culms tufted, from a short-jointed, horizontal rhizome, terete, erect, glabrous, to 140 cm tall. Leaves reduced to sheaths; sheaths rounded, to 10 cm, with a caducous awn, closely culm-clasping. Inflorescence of cymes, pseudo-lateral on the stem, solitary, to 4 cm long and 7 cm wide, many flowered; bract to 18 cm long, continuous with the culm. Flowers mostly stalked, but sessile at forks; bracteoles 2, broadly ovate, acute, yellowish, to 0.1 x 0.06 cm. Tepals narrowly ovate-elliptic, acute, subequal, margins transparent; midrib prominent. Stamens usually 3. Ovary obovoid; style short; stigma erect. Capsule obovoid, 3-gonous, to 0.3 x 0.2 cm; seeds numerous, oblong, brownish."
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