1. Plant Phylogenetics and Conservation Group, Centre for Integrative Conservation, Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunming650223China
2. University of Chinese Academy of SciencesBeijing100049China
3. School of Biological Sciences and Australian Centre for Evolutionary Biology and Biodiversity and Sprigg Geobiology CentreUniversity of AdelaideAdelaideSouth AustraliaSA 5005Australia