Samaras of Ventilago (Rhamnaceae) from the upper Miocene of Lincang, Yunnan, China and their phytogeographic implications
Ke-Nan Liu, San-Ping Xie, Steven R. Manchester, Yun-Feng Wang, Yang Shao, Bin-Ke Li
J Syst Evol . 2015, (3): 252 -258 .  DOI: 10.1111/jse.12136