annual, glabrous, green; stems 4–16 in. long, trigonous at the top, smooth; leaves about as long as the stem, 1/8– 1/5 in. broad, grass-like; umbel simple, 3–10 in. in diam., or sometimes of 1 head; bracts 3–4, overtopping the umbel, similar to the leaves; spikelets 3–10, closely spicate, much compressed, 1/2– 3/4 by 1/8– 1/6 in., 4–30-flowered, green or green with red patches, ultimately straw-coloured; rhachilla not winged; glumes closely imbricated, boat-shaped, ovate, acute, conspicuously many-nerved; stamens 3; anthers linear-oblong, not crested; nut 1/3 the length of the glume, broadly obovoid, triquetrous with concave faces; style shorter than the nut, branches 3 linear, shortly exserted from the glume. null
