1. Biodiversity and Conservation Biology Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
2. Institute of Plant Sciences University of Bern Bern Switzerland
3. Division of Life Science and Center for Chinese Medicine The Hong Kong University of Science and Technology Hong Kong China
4. Systematics, Biodiversity and Evolution of Plants, Ludwig Maximilian University Munich Munich Germany
5. Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany, Chinese Academy of Sciences Kunming China