Comparison of gene flow among species that occur within the same geographic locations versus gene flow among populations within species reveals introgression among several Elymus species
Pan-Pan Wu, Hong-Wei Zuo, Genlou Sun, De-Xiang Wu, Bjorn Salomon, Qun-Wen Hu, Zhao-Rong Dong
J Syst Evol . 2016, (2): 152 -161 .  DOI: 10.1111/jse.12172