1. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, P.R. China
2. College of Life Sciences, University of Chinese Academy of Sciences, Beijing, P.R. China
3. The National Orchid Conservation Center of China, The Orchid Conservation and Research Center of Shenzhen, Shenzhen, P.R. China
4. College of Life Science, South China Agricultural University, Guangzhou, P.R. China