Dwarfish, glabrous annual with fibrous roots. Stems tufted, setaceous, angular-sulcate, somewhat compressed, smooth, 5-15 cm by ¼-½ mm, the lower part surrounded by 1-2 tubular sheaths with short leaf-blades. Basal leaves in a rosette, about half as long as the stems, falcate (twisted to the left), broadly linear, flat or somewhat canaliculate, obtuse, scabrid on the margins in the upper part, 1½-2½. mm wide; ligule absent; sheaths stramineous or ferrugineous. Inflorescence simple, rarely subcompound, loose, with few, (1-)3-4(-6) spikelets. Involucral bracts 2-3, very short, glume-like, with dilated base, mucronate, 2-3 mm long. Rays at first obliquely erect, finally widely spreading, capillary, angular, smooth, the longest ½-1 cm. Spikelets solitary, lanceolate to oblong-lanceolate, angular, acute, sev-eral-flowered, 4-8 by 1¼-1½ mm, rachilla broadly winged. Glumes spiral or the lower ones sometimes subdistichous, membranous, broadly ovate, acute or minutely apiculate, keeled, c. 1½ mm long and wide, with 3-nerved green keel, nerveless ferrugineous sides and narrow hyaline margins. Stamen 1; anther oblong, c. ½ mm long-Style triquetrous, pyramidally thickened at the base, glabrous, ¾-1 mm; stigmas 3, about as long as the style. Nut obtusely trigonous, tricostate, with convex sides, minutely stipitate, umbonulate, densely verruculose, obsoletely retic-ulate by the isodiametric epidermal cells, whitish or stramineous, 3/5-¾ by ½-3/5 mm.
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