Rhizome short, indurate. Culms tufted, up to 50 cm tall, triquetrous, striate, clothed at base with bladeless sheaths. Leaves shorter than culm, blades broadly linear, ca. 10 mm wide, flat, dark green, 2-veined, sparsely pilose beneath. Involucral bracts leaflike, scarcely setaceous toward apex, base sheathing. Spikes up to 15, in groups of 1-3, lower ones distant; terminal spike male; lateral spikes female, shortly cylindric, 2-3 cm × 4-5 mm, loosely 8-12-flowered; peduncles usually smooth, unequal. Female glumes ferruginous or reddish brown, elliptic, green 3-veined costa not excurrent, apex obtuse. Utricles olive-green, spreading, ± as long as glume, ovate or subelliptic, swollen trigonous, ca. 2.5 mm, membranous, densely papillose, many veined, base cuneate, beak short, slightly excurved, 2-toothed. Nutlets tightly enveloped, obovate, trigonous, ca. 2 mm; style base somewhat thickened; stigmas 3, papillate.
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