Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai–Tibetan Plateau and adjacent areas
Cong-Li Xu, Tao Su, Jian Huang, Yong-Jiang Huang, Shu-Feng Li, Yi-Shan Zhao, and Zhe-Kun Zhou
J Syst Evol . 2019, (2): 169 -179 .  DOI: 10.1111/jse.12452