Herbs or subshrubs, 1.2–2.5 dm. Stems erect, purple-green, apex never flexuous. Leaves: petiole 1–4 mm; blade orbiculate to elliptic, 2–5 × 0.8–3 cm, base acute, margins serrate to crenate, apex acute to blunt. Inflorescences terminal (often appearing leaf opposed), glands absent, staminate flowers 4–11 per raceme; staminate bracts 0.8–1.2 mm. Pedicels: staminate 1.5–1.9 mm, persistent base 0.4–0.6 mm; pistillate 2.8–3.4 mm in fruit. Staminate flowers: sepals 4–5, green, 0.9–1.5 mm; stamens 2, filaments 0.2–0.5 mm. Pistillate flowers: sepals lanceolate, 1.3–2.3 mm; styles connate 1/4 length; stigmas undulate. Capsules 9–13 mm wide. Seeds dark brown with light brown streaks, 4–4.5 mm. 2n = 44.
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