Interspecific pollen transfer between two coflowering species was minimized by bumblebee fidelity and differential pollen placement on the bumblebee body
Zhi-Huan Huang, Huan-Le Liu, Shuang-Quan Huang
J Plant Ecol . 2015, (2): 109 -115 .  DOI: 10.1093/jpe/rtv015