Perennial with short rhizome. Stems slender, densely tufted, compressed-trigonous, obtusangular, striate, slightly puberulous or scabrid at the top, 30-40 cm by ½-¾ mm. Leaves half as long as the stems, erect, often with circinnate top, rigidulous, flat, abruptly acuminate, at first slightly pubescent, soon glabrescent, scabrid on the margins at least in the upper part, greyish green or glaucous with brownish sheaths, 1-1¼ mm wide; ligule absent. Inflorescence subcompound to subdecompound, loose, with several to many spikelets, 3-10 cm long. Involucral bracts 3-4, the lowest somewhat shorter than the inflorescence, up to 8 cm. Primary rays ascendent-erect, compressed, scabrid-pilose, up to 7 cm. Spikelets solitary, ovoid or oblong-ovoid, somewhat angular, acute, densely many-flowered. dull greyish brown, 4-6 by 2-2½ mm; rachilla narrowly winged. Glumes spiral, membranous, gla-brous, ovate, acutish, apiculate or minutely mucro-nulate, with c. 5-nerved, green keel, prominent midnerve, fulvous nerveless sides, and very broad hyaline margins, 2¾-3 by c. 2 mm. Stamens 3; anthers linear, 1-1½ mm. Style slender, flat, scarcely margined, ciliate in the upper half, retrorsely his-pidulous at the abruptly dilated base, c. 2 mm; stigmas 2, somewhat shorter than the style. Nut turgidly biconvex, broadly obovate, with acutish edges, shortly stipitate, minutely umbonulate, smooth, delicately trabeculate by longitudinal ribs and transverse lines, at first white, ultimately shining brown, ¾ by 3/5 mm; epidermal cells slightly im-pressed, transversely oblong-linear, in 8-10 vertical rows on either face.
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