Herbs, perennial, with rhizomes, monoecious (sometimes staminate), 3–5 dm, branching not phyllanthoid. Stems terete, not winged, glabrous. Leaves spiral, all well developed; stipules auriculate, pink to brown with pale margins; blade obovate, 10–24 × 5–10 mm, base acute, apex rounded, sometimes apiculate, both surfaces glabrous. Inflorescences cymules, bisexual or staminate, with 1 pistillate flower and 3–6 staminate flowers or with 7–9 staminate flowers. Pedicels: staminate 2–3.5 mm, pistillate spreading in fruit, 4.5–8 mm. Staminate flowers: sepals 6, greenish yellow, flat, 1.2–1.8 mm; nectary extrastaminal, 6 glands; stamens 3, filaments connate 85–90% length. Pistillate flowers: sepals 6, green with narrow pale margins, flat, 2.8–3.5 mm, pinnately veined; nectary 6-lobed. Capsules 4 mm diam., smooth. Seeds uniformly brown, 1.7–1.8 mm, irregularly verrucose.
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