Stems slender, with white lenticels. Petiole 3-9 cm; leaf blade broadly ovate or broadly cordate, 11-17 × 10-16 cm, papery, usually 3-5-lobed up to middle, sometimes irregularly 5-9-lobed; lobes oblong or rhombic-ovate, glabrous, margin remotely denticulate, apex acuminate. Male flowers solitary; pedicel setiform, 4-7 cm; calyx tube narrowly campanulate, 1.2-1.5 × ca. 0.4 cm, glabrous or remotely villous; segments erect or reflexed, linear, 6-7 mm. Female flowers unknown. Fruit orange-red, ovoid-oblong, ca. 9 × 5-6 cm, attenuate at both ends. Seeds brown, oblong, 1-1.3 × ca. 0.9 cm, base rounded, margin crenellate, apex truncate. Fl. May-Jun, fr. Sep-Oct.
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