Probably annual. Stems very slender, setaceous, densely tufted, ancipitous, glabrous and smooth, finely striate, 30-40 cm by c. ½ mm. Leaves about as long as the stems or somewhat shorter, capillary, weak, abruptly acuminate, glabrous, scabrid at the very top, otherwise smooth, c. ½ mm wide; ligule a dense fringe of short hairs; sheaths membranous, glabrous, rounded on the back. Inflorescence simple or subcompound, loose, with 3-10 spikelets, 1½-2½ cm long and wide. Involucral bracts 2-3, the lowest up to twice as long as the inflorescence, 2-5 cm. Rays ancipitous, smooth, sometimes with a short secondary ray, bearing l(-3) spikelets. Spikelets solitary, narrowly ovoid, angular, acute, loosely few-flowered, light brown, 4-5 by 1½(-2) mm; rachilla winged. Glumes spiral, membranous, oblong-ovate, mucro-nulate, sharply keeled, glabrous, 2-2½ by 1½ mm; keel 3-nerved, sides nerveless, margins scarcely hyaline. Stamens 2-3; anthers linear, c. ½ mm long. Style triquetrous, pyramidally thickened in the lower ⅓, glabrous, 1½ mm long; stigmas 3, somewhat shorter than the style. Nut trigonous, slightly dorsiventrally compressed, broadly obovoid, with flat, smooth faces, minutely stipitate, umbonulate, shining, whitish, c. 4/5 by 7/10 mm; epidermal cells transversely elliptic.
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