Herbs vinelike. Rhizomes long creeping, zigzag, 30-50 cm, 3-5 mm in diam., sparsely hirsute-villous; internodes 3-5 cm. Leaves all basal; stipules broadly ovate, 9-11 mm, base obliquely auriculate, margin entire; petiole 9-12 cm, sparsely reflexed hirsute; blade ovate, 10-18 × 4-7 cm, papery, rugose, abaxially hirsute-pilose on veins, adaxially setulose, base obliquely deeply cordate, margin serrulate and ciliate, apex acuminate. Inflorescences axillary, flowers 8-13 in 2-4 times branched dichasial cyme; peduncle 5-9 cm, glabrous; bracts oblong or broadly obovate, 1.2-1.4 × 0.9-1.1 cm, glabrous, margin ciliate, apex rounded. Staminate flowers: pedicel ca. 1.5 cm, glabrous; tepals 4, outer 2 pink, with red veins, suborbicular, 1-1.2 cm in diam., abaxially sparsely hirsute, inner 2 white or pinkish, elliptic, 9-10 × 3-3.5 mm, glabrous; androecium zygomorphic; stamens numerous; filaments nearly free, 0.8-1 mm; anthers obovoid, ca. 1.3 × 0.7 mm, apex emarginate. Pistillate flowers: tepals 3, outer 2 with pink veins, suborbicular, 0.8-1 cm in diam., abaxially strigose-hirsute; ovary 5-6 × 4-4.5 mm, sparsely strigose-hirsute, 1-loculed with parietal placentation; styles 3, free, 1.8-2.3 mm; wings 3, unequal, apex truncate or rounded. Capsule unknown. Fl. May-Nov.
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