1. State Key Laboratory of Systematic and Evolutionary Botany, Institute of BotanyChinese Academy of Sciences Beijing 100093 China
2. Sino‐African Joint Research CenterChinese Academy of Sciences Wuhan 430074 China
3. Southeast Asia Biodiversity Research InstituteChinese Academy of Sciences Yezin 05282 Nay Pyi Taw Myanmar
4. Center for Integrative Conservation, Xishuangbanna Tropical Botanical GardenChinese Academy of Sciences Mengla 666303 Yunnan China
5. Shanghai Chenshan Botanical Garden Shanghai 201602 China
6. Department of Biology and Burke MuseumUniversity of Washington, Seattle WA 98195‐5325 USA
7. Research Centre of Ecological SciencesJiangxi Agricultural University Nanchang 330045 China
8. Agricultural Research StationFort Valley State University Fort Valley GA 31030, USA
9. Forest Research Institute of Malaysia Kepong 52109 Selangor Malaysia