Rhizome very short, woody. Stems tufted, slender, erect, triquetrous, smooth or scabrid on the angles above, 20-60 cm by ½-1 mm, surrounded below the leaves by spadiceous sheaths ultimately fraying into persistent fibres. Leaves subbasal, shorter to slightly longer than the stems, flat to conduplicate, stiff, long-attenuate, asperous especially in the upper part, 2-3(-4) mm wide. Inflorescence with 3-6 fascicles of 1-3 spikelets, narrow, 10-20 cm long, upper fascicles approximate, lower more distant. Spikelets erect, mostly simple, rarely branched at the base, lax-flowered, androgynous (female part longer than the male one), upper on scarcely, lower on shortly to rather long-exserted, smooth or scabrid peduncles, up to 3 cm long. Lower bracts foliaceous, longer than their fascicles but usually shorter than the inflorescence, long-sheathing, upper much reduced. Glumes about as long as utricles, oblong-lanceolate, acuminate, acute, translucent, glabrous, ferrugineous, sometimes with pale-hyaline margins above, muticous or with an awn up to 2 mm long, 3.5-5 mm long. Utricles elliptic, plano-convex or compressed-biconvex, membranous, slenderly multinerved, suberect, castaneous, whitish appressed-hispidulous, cuneate-stipitate, subabruptly beaked, 3.5-4.5 (-5) by 1-1 1/3 mm; stipe 1/3-1/2 mm; beak 1.5-2 mm, bidentate. Nut elliptic to oblong-elliptic, compressed-biconvex, not stipitate, shortly beaked, brown, 2(-2.5) by 1(-1.25) mm. Style-base slightly thickened. Stigmas 2, very long (7-12 mm), flexuous, persistent.
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Rhizome short. Culms densely tufted, 25-60(-90) cm tall, slender, triquetrous, slightly scabrous, clothed with few bladeless sheaths. Leaves shorter than or equaling culms, blades 2.5-3 mm wide, conduplicate at base, canaliculate on midrib surface, flattened at upper part, scabrous on veins and margins, basal sheaths usually disintegrating into fibers. Involucral bracts shorter than or equaling inflorescence, lower ones leaflike, upper ones setaceous, scabrous on margins, sheathed; sheaths 5-30 mm. Spikes numerous, 1-3 in an involucral bract sheath, androgynous, linear, 1-5 cm, male part shorter than female part, lower spikes sometimes branched, laxly flowered, slender or rather shortly pedunculate. Female glumes brown-yellow or brownish yellow, oblong-ovate, 4-5 mm, membranous, green 3-veined, apex acute, aristate or mucronate, sometimes muticous, hispidulous on margins of awn. Utricles dark brown, shorter than glume, oblong or narrowly elliptic, plano-convex, ca. 4.5 mm, membranous, hispidulous, several veined, base abruptly contracted into a short stipe, apex gradually narrowed to a rather long beak, orifice minutely 2-toothed. Nutlets yellowish, tightly enveloped, elliptic, compressed biconvex, ca. 2 mm, sessile; style base rather thickened; stigmas 2, slender, persistent.
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