Herbs, annual, monoecious, 1–5 dm; branching not phyllanthoid. Stems proximally terete, distally compressed, winged, scabridulous. Leaves distichous, all well developed; stipules auriculate, pale green with pale brown margins; blade elliptic or oblong, 8–20 × 2.5–10 mm, base obtuse to rounded, apex acute to obtuse, both surfaces glabrous. Inflorescences cymules, bisexual, with 1–2(–3) pistillate flowers and 1–3 staminate flowers. Pedicels: staminate 0.5–0.8 mm, pistillate sharply reflexed in fruit, (1–)1.4–1.8(–2.2) mm. Staminate flowers: sepals 5–6, pale brownish green with narrow white margins, flat, 0.5–0.7 mm; nectary extrastaminal, 5–6 glands; stamens 3, filaments connate basally to most of length. Pistillate flowers: sepals (5–)6, green (sometimes tinged pink) with narrow white margins, flat, 0.7–1.2 mm, 1-veined; nectary annular, unlobed. Capsules 2.8–3.2 mm diam., smooth. Seeds uniformly brown, 1.3–1.5 mm, irregularly verrucose.
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