Li Hu, Rui Yang, Guo‐Qian Yang, Gui‐Ling Sun, and Xun Gong. Morphological distinctiveness of Ligularia tongolensis and L. cymbulifera is maintained between habitats despite bidirectional and asymmetrical introgression in multiple hybrid zones[J]. J Syst Evol, DOI: 10.1111/jse.12756.