Subshrubs, 2.5–5 dm. Stems erect to decumbent, dark green, apex never flexuous. Leaves usually 3-foliolate, sometimes 3-lobed nearly to base; petiole 7–18 mm; leaflets: blade lanceolate, base acute, margins deeply and coarsely serrate, sinuses often extending 1/2+ to midvein, apex acute, central one 2.5–4 × 1–2 cm, lateral ones often with basal lobe. Inflorescences terminal (often appearing leaf opposed), glands absent, staminate flowers 10–20 per raceme; staminate bracts 0.5–1.5 mm. Pedicels: staminate 0.8–1.6 mm, persistent base 0.3–0.7 mm; pistillate 2.5–3 mm in fruit. Staminate flowers: sepals 3–4, green, 1–1.4 mm; stamens 3, filaments 3.5–4 mm. Pistillate flowers: sepals lanceolate, 2–3 mm; styles connate 1/4–1/2 length; stigmas undulate to subpapillate. Capsules 6–7 mm wide. Seeds dark brown, 3–3.2 mm.
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