Eleocharis obicis

Tufted perennial with very short rhizome. Culms terete, to c. 45 cm high, c. 1 mm diam. Spikelet linear-cylindrical, 2–3 cm long; glumes obtuse, striate, with a fairly prominent midrib and broad hyaline margins, straw-coloured, usually tinged red-brown, 4–5 mm long; hypogynous bristles 2–7, reduced or half as long as nut, unequal; stamens 3; anthers 1.5–3.8 mm long; style 3-fid. Nut unequally trigonous with angles acute, obovoid, narrowed to a distinct neck, pale yellow to dark brown, c. 1.5 mm long, c. 1.2 mm diam, shallowly pitted; external cells isodiametric, occasionally slightly elongated horizontally; style-base c. one-third as long as and c. one-third as wide as nut. Flowers spring–summer.