1. State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
2. Key Laboratory of Ecology of Rare an Endangered species and Environmental Protection; Ministry of Education of the People's Republic of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China