Leaf blade abaxially pale green, adaxially deep green, cordate, 10-22 × 8-20 cm, membranous, ± deeply palmately 5-7-lobed; lobes elliptic-obovate, puberulent, margin distantly denticulate, apex acuminate. Male flowers solitary, fascicled, or in short racemes; peduncle ca. 5 cm; bracts absent or ca. 5 mm; calyx tube funnelform, ca. 1 cm; segments linear-lanceolate, ca. 1 cm; pistillodes 3, claviform, ca. 5 mm. Female flowers solitary; pedicel ca. 2 cm; calyx tube shortly tubular; ovary ca. 2.5 cm, villous; staminodes 3. Fruit cylindric, ca. 20 × 7 cm, with ca. 80 seeds. Seeds ovate, ca. 1 cm, compressed, verrucose, margin sulcate, crenellate.
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