Description from Flora of China
Woody lianas, ca. 10 m tall, mostly glabrous. Leaf stipules 2, linear to lanceolate, ca. 1 mm, apex acute; petiole 1-1.5 cm; leaf blade ovate, 6-12 × 4-7 cm, papery or leathery, both surfaces glabrous, base cordate to rounded, with 2 glands adnate to petiole, margin slightly reflexed, apex acute to acuminate. Racemes terminal or axillary; pedicels 1.5-3 cm; bract 1, articulate distally; bracteoles 2. Flowers 2-2.5 cm in diam. Sepals 5, triangular, ca. 3 × 1.5 mm, eglandular or with very minute glands. Petals 5, yellow, sagittate-ovate, 8-13 × 5-6 mm, clawed, glabrous, entire; claw 2-3 mm. Stamens 3-4 mm. Schizocarp stellate, 1-2 cm in diam. Fl. Aug, fr. Oct.
Forests near seashores. Taiwan (Hengchun peninsula, Lan Yu) [Malaysia, Thailand, S Vietnam; tropical Australia, Pacific islands].