Annual. Stems very slender, more or less nodding at the top, smooth, 1-2-noded below the inflores-cence, 20-45 cm by 1-1½ mm. Leaves narrowly linear, rather abruptly narrowed to the obtusish tip, glabrous, smooth or scabrid on the margins and the main nerves near the apex, 1-3 mm wide; sheaths narrow, wingless, upper ones glabrous, lower ones often reduced to the sheaths, pubescent, purplish; contraligule short, broadly rounded, ciliate. Inflorescence occupying by far the greater part of the stem, narrow, very loose, consisting of about 3 very remote fascicles of partial panicles, the terminal panicle not larger than the lateral ones, 1-2 cm long; peduncles 3-4 together at the nodes, exserted from the sheaths, more or less nodding, filiform, slightly incrassate at the apex, 2-4 cm long; primary bracts erect, as long as or overtopping the inflorescence. Spikelets unisexual; ♂ spikelets about as long as their peduncles, linear-lanceolate, 1½-2½ mm long; stamen 1; anther oblong-linear, ⅔-1 mm long; ♀ spikelets 3½-4 mm long, without a trace of a ♂ part; glumes ovate, acute or mucronulate. Cupula very small, ⅔ mm wide, hardly lobed. Disk small, shortly 3-lobed; lobes obtuse, semi-orbicular. Nut globose, deeply longitudinally ribbed, with 3 of the ribs more prominent, more or less trabeculate between the ribs, slightly tuberculate at the top, umbonulate, glabrous, shining, white, c. 1⅔ mm across, the ribs not all reaching the base of the nut, but leaving a smooth triangular area above each disk-lobe.
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