Rhizome short. Culms tufted, 15-40 cm tall, slender, smooth, with leaves at base. Leaves shorter than culm, blades convolute, threadlike, rather hard, slightly smooth. Inflorescence 1-spiked, terminal, androgynous; male part linear, distinct; female part as long as male part, slightly loosely many flowered. Female glumes ovate-lanceolate, apex mucronate. Utricles olive-green, longer than glume, obliquely patent at maturity, ovate-elliptic, trigonous, ca. 3 mm, membranous, glabrous, base contracted, apex tapering to a beak ca. 1 mm, orifice 2-toothed. Nutlet brown-red, small, ovate, trigonous; stigmas 3.
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