1. Key Laboratory of Plant Resources Conservation and Sustainable Utilisation, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, People’s Republic of China
2. Centre of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, People’s Republic of China
3. Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, People’s Republic of China
4. Royal Botanic Garden Edinburgh, Edinburgh, UK