Rhizome short. Culms 10-35 cm tall, erect, trigonous, scabrous, clothed at base with purple-brown sheaths eventually disintegrating into parallel fibers. Leaves longer than culm, blades linear, 1.5-5 mm wide, flattish plicate, ± stiff. Lower involucral bracts setaceous, sheathing, upper involucral bracts glumelike, sheathless. Spikes 4-9, subfastigiate; terminal spike male, rarely gynaecandrous, linear or linear-cylindric, 1-12 cm; lateral spikes female or androgynous, linear, 1-10 cm, subdensely many flowered. Female glumes dark brown or golden brown, lanceolate-ovate, 2-5 mm, membranous, upper margins ciliate, apex acute. Utricles longer than glume, erect, linear-oblong or lanceolate, compressed trigonous, 4-8 mm, membranous, sparsely pubescent, ciliate on margins, finely many veined, base gradually attenuate into a short stipe, apex gradually narrowed to a long curved beak, orifice deeply 2-toothed. Nutlets ovate-oblong, ca. 1.5 mm, base with a long, filiform stipe 2-3 mm; style slender, base not markedly thickened; stigmas 3.
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