1. The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education; College of Life Sciences; Zhejiang University; Hangzhou 310058 China
2. Laboratory of Systematic and Evolutionary Botany; Institute of Plant Sciences and Conservation Center for Gene Resources of Endangered Wildlife; Zhejiang University; Hangzhou 310058 China
3. Wisconsin State Herbarium; Department of Botany; University of Wisconsin; Madison WI 53706 USA
4. Research and Development Centre; Firmenich Aromatics (China); Shanghai 201108 China
5. College of Life Sciences and Technology; Tongji University; Shanghai 200092 China