Herbs or subshrubs, 2–5 dm. Stems erect to trailing, green to whitish green, apex never flexuous. Leaves: petiole 10–40 mm; blade triangular-lanceolate to triangular-ovate, 1.5–6 × 1–3.5 cm, base cordate to truncate, margins serrate, apex acute. Inflorescences terminal (often appearing leaf-opposed), glands absent, staminate flowers 15–80 per raceme, distally clustered; staminate bracts 1–2 mm. Pedicels: staminate 0.7–1 mm, persistent base 0.3–0.6 mm, shorter than subtending bract; pistillate 3–4 mm in fruit. Staminate flowers: sepals 3–4, green, sometimes red-tinged, 1.2–2.3 mm; stamens 3(–4), filaments 0.4–1 mm. Pistillate flowers: sepals lanceolate, 1.8–5 mm; styles connate 1/3 length; stigmas papillate. Capsules 7–9 mm wide. Seeds dark brown with light brown streaks, 3–4 mm.
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