Stems densely shortly hairy and sparsely villous. Petiole 6-9 cm, punctate, puberulent; leaf blade orbicular-cordate, 11-17 × 10-15 cm, papery, shortly 3-5-lobed or 7-9-lobed up to middle; lobes rhombic, both surfaces shortly puberulent, margin irregularly crenate-dentate, apex acuminate. Female flowers solitary; pedicel 5-7 cm, slightly villous; calyx segments linear, 10-12 × 1-1.5 mm, entire; ovary oblong, 15-20 × 8-9 mm. Fruiting peduncle 12-16.5 cm; fruit oblong, 10.5-11.5 × ca. 8.5 cm. Seeds up to 1.9 cm, smooth. Fl. May-Aug, fr. Aug-Oct. 2n = 88*.
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