Subshrubs, 1.2–5 dm. Stems erect to trailing, dark green to light green, apex rarely flexuous. Leaves: petiole 2–20 mm; blade linear-lanceolate to narrowly ovate, 1–4 × 0.5–2 cm, base truncate to weakly cordate, margins serrate, apex acute. Inflorescences terminal (often appearing leaf opposed), glands few, sessile, staminate flowers 2–20 per raceme; staminate bracts 1.5–2 mm. Pedicels: staminate 0.7–2 mm, persistent base 0.4–1.5 mm; pistillate 2–2.5 mm in fruit. Staminate flowers: sepals 3–4, green, 1–2.2 mm; stamens 3–6(–10), filaments 0.3–1 mm. Pistillate flowers: sepals lanceolate, 0.8–2.5 mm; styles connate 1/3–1/2 length, long-exserted; stigmas smooth to undulate. Capsules 6–8 mm wide. Seeds dark brown, 2.5–3.5 mm. 2n = 44.
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