1. 1 Department of Medicinal plants and cultivation, College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China.
2. 2 Botanischer Garten und Botanisches Museum Berlin, Freie Universität Berlin, Königin-Luise-Str. 6–8, 14195 Berlin, Germany.
3. 3 Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.