Rhizome short, ligneous. Culms densely tufted, 30-85 cm tall, compressed triquetrous, rather slender, smooth with few shortly bladed sheaths at base. Leaves shorter than or equaling culm, blades 3-3.5 mm wide, ± stiff, flat, margins scabrous; sheaths rather long, truncate at mouth. Involucral bracts leaflike, sublinear, surpassing subtending spike, scabrous on margins. Spikes 3 or 4, rather remote; terminal spike male, sometimes with female flowers at base or apex, 1.5-3.5 cm; lateral spikes 2 or 3, female, oblong, 1.5-2.5 cm, densely many flowered; peduncles slender. Female glumes brown-yellow, ovate, ca. 2 mm, membranous, green 1-veined, upper margins white hyaline, apex acute, muticous. Utricles yellow-green, longer than glume, obovate-elliptic, trigonous 4.5-5 mm, inconspicuously veined, base cuneate, apex gradually narrowed to a long beak, orifice shortly 2-toothed. Nutlets brown, elliptic, trigonous, ca. 1.5 mm, base shortly stipitate; stigmas 3, slender. Fl. and fr. May-Jun.
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