Carpinus polyneura A, B population from Tianmenshan, Zhangjiajie City (type locality of C. dayongina) (A photographed by H. Zhou B photographed by W. Q. Qin) C, D population from Wushan, Chongqing City (near the type locality of C. polyneura) (C, D photographed by H. L. Zhou).

 
 
  Part of: He Q, Zhao R, He A, Zhu Z, Tong Y (2021) Taxonomic Identity of Carpinus dayongina Franchet (Betulaceae). PhytoKeys 177: 63-75. https://doi.org/10.3897/phytokeys.177.57725