1. Dept of Biology, Zunyi Normal College, Zunyi Guizhou P. R China
2. Gesneriad Conservation Center of China (GCCC), Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guilin Botanical Garden, Guangxi Inst. of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences Guilin P. R China