Herbs, rhizomatous. Rhizomes creeping, 5-15 mm in diam.; internodes 3-5 mm. Leaves all basal; stipules triangular; petiole 5-19 cm, hirsute-villous or sparsely villous; blade adaxially often pale green to white on angles between or near veins, obliquely ovate or suborbicular, 5-20 × 4-13 cm, often angularly shallowly lobed, abaxially sparsely or moderately hirsute on veins, adaxially pilose, sparsely tomentose, or very sparsely scaberulous, basally 5-or 6-veined, tertiary veins fine, randomly reticulate, base deeply cordate, margin denticulate or crenulate, apex acuminate or acute. Inflorescences with 8-10 flowers in a dichasial cyme; peduncle 9-35 cm. Staminate flowers: tepals 4, outer 2 ovate, broadly ovate, or suborbicular, 5-14 × 5-10 mm, apex obtuse or acute, inner 2 oblanceolate, 3-10 × 2-4 mm; androecium zygomorphic; stamens 10-55; filaments 1-1.5 mm; anthers oblong, 1-1.2 mm, apex subemarginate. Pistillate flowers: tepals 3, outer 2 5-14 × 5-15 mm, inner 1 oblanceolate, 3-10 × 2-4 mm; ovary glabrous; placentae parietal; styles 3. Capsule nodding, ellipsoid, 6-18 × 4-6 mm, unequally 3-winged; abaxial wing oblong or triangular, 5-13 mm, apex obtuse or acute. Fl. May-Nov, fr. Jun-Jan.
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