Schoenoplectiella dissachantha

Annual tufted herb. Culms terete to trigonous, 3–35 cm high, to 1 mm diam. Leaves usually reduced, rarely blade to 6 cm long. Inflorescence a cluster of 1–5(–10) sessile spikelets; involucral bract often as long as culm, to 9(–20) cm long. Spikelets oblong, obtuse, 5–14(–28) mm long, c. 3 mm diam.; glumes acute to obtuse, glabrous, hyaline or tinged golden yellow, with green midrib, 2.0–3.5 mm long; style 2-fid; hypogynous bristles 6, minutely scabrous or smooth, as long as or shorter than the nut. Nut suborbicular or obovoid, unequally biconvex, closely and prominently transversely rugose, with narrowly acute ridges, yellow-brown to black, shining, often more than half as long as the glume, 1.0–1.3 mm long, c. 1 mm diam. Flowers spring–summer.