Rhizome short, shortly stoloniferous. Culms laxly tufted, 30-75 cm tall, triquetrous, laxly pubescent, with brown, pubescent, and bladeless sheaths at base. Leaves equaling culm, blades 3-6 mm, flat, with transverse septate nodes between veins, laxly pubescent, lower ones long sheathed. Involucral bracts leafy, lowermost one nearly equaling inflorescence, upper ones shorter than inflorescence, shortly sheathed. Spikes 3 or 4, slightly remote; terminal spike male, narrowly lanceolate or linear, 1-2 cm, shortly pedunculate; lateral spikes female, oblong or oblong-ovate, 1-2.5 cm, slightly densely more than 10-flowered, lower spikes shortly pedunculate, upper one subsessile. Female glumes yellowish brown laterally, green at middle, broadly ovate, ca. 3 mm, membranous, 3-veined, apex acuminate, mucronate. Utricles green-brown, obliquely patent, longer than glume, ovate, obtusely trigonous, 5-6 mm, subleathery, raised several veined, base broadly cuneate, shortly stipitate, apex gradually narrowed to a short beak, orifice long and recurved 2-toothed. Nutlets slightly tightly enveloped, obovate, trigonous, 2.5-3 mm, apex recurved mucronate; style base not thickened; stigmas 3. Fl. and fr. Apr-May.
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