Near to the preceding species. Leaves linear, flat or somewhat folded lengthwise, very gradually narrowed into a subfiliform, aculeate-scabrous point, antrorsely scabrous on the margins and on the midnerve beneath in the upper part, pale green or glaucescent, up to 80 cm by 3-8 mm; sheaths conduplicate, fuscescent, with reddish brown, scarious margins. Scapes trigonous or subterete, smooth, often dark-puncticulate, 4-16 cm by ½-1 mm, the base clothed with a few lanceolate, fuscous sheaths, otherwise without sheaths, nodeless. Inflorescence simple, very dense, head-like, subglobose, with 2-10 spikelets, up to 1½ cm across, not rarely in some of the scapes reduced to a single spikelet. Fruiting spikelets ovoid-ellipsoid, brown, 7-10 by 4-5 mm. Glumes ovate, obtuse, spinulose-ciliolate on the upper margin, 2 by 1¼ −1½ mm. Flowers 1½−1¾ mm long; hypogynous scales 5, the upper 3 lanceolate or narrowly ovate. Stamens 2; anthers ½−¾ mm long. Stigmas 3, rarely in a few flowers 4. Nuts obliquely erect, lageniform, terete or obscurely trigonous, with 6 longitudinal ribs, smooth, shining, dark brown, 2 by ¾-1 mm (beak included); beak clearly distinct from the nut proper, pyramidalconical, obtuse, hexagonal by 6 ribs, densely verruculose, c. ¾ mm long.
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