1. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany; Chinese Academy of Sciences; Beijing 100093 China
2. Shenzhen Key Laboratory of Southern Subtropical Plant Diversity; Fairylake Botanical Garden, Shenzhen and Chinese Academy of Sciences; Shenzhen 518004 China
3. Wuhan Botanical Garden; Chinese Academy of Sciences; Wuhan 430074 China
4. The Orchid Conservation and Research Center of Shenzhen; Shenzhen 518114 China
5. Kunming Institute of Botany; Chinese Academy of Sciences; Kunming 6503201 China
6. College of Life Sciences; Fudan University; Shanghai 200433 China
7. Biology Department; Hope College; Holland MI 49423 USA
8. Department of Botany; University of Florida; Gainesville FL 32611-7800 USA
9. Florida Museum of Natural History; University of Florida; Gainesville FL 32611 USA
10. Department of Botany, National Museum of Natural History; Smithsonian Institution; Washington DC 20013-7012 USA