1. School of Resources and Environmental Engineering, Anhui University, CN-230601 Hefei, Anhui, China
2. The Gesneriad Conservation Center of China, Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guilin Botanical Garden, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, Guangxi, China
3. School of Resources and Environmental Engineering, Anhui Normal University, CN-241000 Wuhu, Anhui, China
4. Chang'an Campus, Shaanxi Normal University, No. 620, West Chang'an Avenue, CN-710119 Xi'An, Shaanxi, China