Cyathostemma vietnamense

Cyathostemma vietnamense Bân; Uvaria yunnanensis (Hu) L. L. Zhou, Y. C. F. Su & R. K. Saunders (2009), not Li (1978). Shrubs to 5 m tall, climbing, brownish pubescent throughout, often glabrescent. Petiole 5-8 mm; leaf blade obovate, 13-20 × 4.5-9 cm, membranous to papery, secondary veins 13-15 on each side of midvein, abaxially distinctly elevated, and adaxially slightly elevated and sparsely stellate pubescent or glabrous, base rounded to shallowly cordate, apex acute to obtuse. Inflorescences axillary, cymose, several flowered. More