1. CAS Key Laboratory of Tropical Forest Ecology , Xishuangbanna Tropical Botanical Garden, , Mengla, Yunnan 666303 , China
2. Chinese Academy of Sciences , Xishuangbanna Tropical Botanical Garden, , Mengla, Yunnan 666303 , China
3. University of Chinese Academy of Sciences , Beijing 100049 , China
4. Millennium Seed Bank, Royal Botanic Gardens Kew, Wakehurst , West Sussex RH17 6TN , UK
5. School of Forest Resources and Conservation, University of Florida , Gainesville, FL 32603 , USA
6. School of Biological and Chemical Sciences, Puer University , Puer, Yunnan 665000 , China
7. College of Forestry, Jiangxi Agricultural University , Nanchang 330045 , China
8. School of Biology, University of St Andrews, Dyers Brae , St Andrews KY16 9TH , UK