Stems moderately robust, grooved, striate, glabrous or pubescent at nodes. Petiole 4-6 cm, striate, densely pubescent; leaf blade ovate to broadly ovate-cordate, 1.5-2 × 1-1.8 cm, leathery, unlobed, both surfaces pubescent on veins, margin remotely denticulate, apex acuminate. Male flowers in racemes or narrow panicles, 5-6 cm; pedicels ca. 6 mm, densely chocolate-colored pubescent; bracts lanceolate, ca. 1.5 cm, densely chocolate-colored villous; calyx tube campanulate, ca. 1.5 × 1.5 cm, densely villous; segments triangular-ovate, ca. 1 × 0.6 cm. Female flowers solitary; pedicel stout, ca. 2 cm, densely villous; calyx tube ca. 1 × 0.7 cm; segments linear, ca. 1.2 × 0.2-0.3 cm, entire, densely villous; ovary ovoid, ca. 2.5 × 2 cm. Fruiting peduncle ca. 2.5 cm, stout, densely villous; fruit ovoid, ca. 6 × 5 cm, densely villous. Seeds pale brown, ovate, compressed, ca. 1.1 × 0.7 cm, base rounded, apex obtuse. Fl. May-Jun, fr. Jul-Aug.
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