13. Cyclea polypetala Dunn, J. Linn. Soc., Bot. 35: 485. 1903.
铁腾 tie teng
Vines, woody, to 10 m or longer. Branchlets longitudinally striate, hispid-puberulent. Petiole 3-7 cm, hispidulous, base geniculate; leaf blade sometimes narrowly peltate, broadly cordate, 6-18 × 5.5-15 cm, papery, abaxially hispid or puberulent, adaxially glabrous and glossy, margin entire, apex acuminate, palmately 5-7-veined, together with fine reticulation prominent abaxially. Inflorescences paniculate, cauliflorous, broad and large, up to 15 cm, hispid or puberulent; pedicel 0.7-1 mm. Male flowers: calyx suburceolate, apex subtruncate or with crenellated lobes, 1-2 mm; petals 4, free, oblong, ± fleshy, 0.5-1.5 mm; synandrium less than 2 mm. Female flowers: sepals 2, deeply cucullate, ca. 0.5 mm; petals 2, rotund, 0.1-0.3 mm in diam., adnate to base of sepals, margin involute. Drupes subglobose, slightly flattened, glabrous; endocarp ca. 4 mm, abaxially bearing 3 rows of tubercles. Fl. and fr. Apr-Nov.
Forests. S Guangxi (Longzhou), Hainan, SE and SW Yunnan [N and NE Thailand].