Rather stiff blue-green tufts; rhizome far-extending. Stems (10) -25-50 cm high, ± terete to ± 3-angled, smooth. Leaves 2-3 mm wide, < stems, double-folded to ± flat, stiff, often curved, rather harshly scabrid; sheaths dark brown, often bright red-tinged. Inflorescence 5-10 cm long, of 4-6 dark brown, pedunculate spikes, terminal (1) -2-3 male, rest female, often a remote lowermost spike on an extremely long peduncle from near base of stem; subtending bracts leaf-like, ± = or > inflorescence. Male spikes ± 3 cm × 1.5 mm; glumes narrow, obtuse, dark brown with lighter brown midrib not reaching tip of glume. Female spikes 2-4.5 cm× ± 4 mm, often male at top; glumes < utricles, oblong-ovate, subobtuse, dark purple-brown with broad, lighter green to brown midrib. Utricles ± 2-2.5 × 1.5 mm, obovoid to ± orbicular, often inflated, papillose, red-tinged throughout or green with red patches, beak minute, orifice truncate, dark red. Stigmas 3. Nut ellipsoid, trigonous.