1. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road, Panlong District Kunming 650201 P.R. China
2. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden Chinese Academy of Sciences 723 Xingke Road, Tianhe District Guangzhou 510650 P.R. China
3. Research Associate of: Western Australian Herbarium, P.O. Box 104, Bentley Delivery Centre, W.A. 6983, Australia; The Herbarium, Singapore Botanic Gardens National Parks Board Singapore, 1 Cluny Road 259569 Singapore
4. National Center for Genetic Engineering and Biotechnology 113 Thailand Science Park Khlong Nung, Khlong Luang Pathum Thani 12120 Thailand
5. The Herbarium, Singapore Botanic Gardens National Parks Board Singapore, 1 Cluny Road 259569 Singapore