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Annual. Stems slender, smooth, (10-)30-90 cm by 1-2 mm. Leaves rather suddenly narrowed to the obtusish tip, glabrous, scabrid on the margins in the upper part, 2-5 mm wide; sheaths rather loose, winged, glabrous or sparsely pubescent; edge of wings retrorsely scabrid; contraligule short, rounded or truncate, with narrow, membranous, ciliate margin. Inflorescence narrow, elongate, the terminal panicle oblong, 2-4 cm long, somewhat longer than the 1-3 distant lateral fascicles, these erect or the lower ones often pendulous, 1-3 at each node, on slender, smooth or scabrid peduncles more or less exserted from the sheaths; primary bracts erect, much longer than the panicles in their axils, as long as or overtopping the inflorescence. Spikelets unisexual; ♂ spikelets shortly peduncled (peduncles 1-3 mm long), lanceolate, 4-5 mm long; stamens 3; anthers linear, 1-1½ mm long; ♀ spikelets 5 mm long, without a barren or ♂ flower besides the ♀ one; glumes ovate, acute or mucronulate, stramineous with purplish margins to wholly purplish. Cupula hardly lobed, 1 mm wide. Disk 3-lobed; lobes thickish, appressed, ovate, acuminate, sometimes faintly bidentate at the top, greenish or yellowish. Nut shorter than the glumes, ellipsoid or subglobose, obsoletely trigonous, deeply cancellate, glabrous or ferrugineous-pubescent on the transverse raised lines, mucronate, shining, white, 2-2⅓ by 1⅔-14/5 mm; lacunae rectangular, mostly longitudinally elongate, walls between the lacunae narrow.
Lateral panicles 1–3 together, pendulous, on long slender peduncles
Leaves up to 6 mm. wide
Annual
