Syrphid fly pollination of Guihaiothamnus acaulis (Rubiaceae), a species with "butterfly" flowers
1,2Pei‐Wu XIE 1Zhong‐Lai LUO 1Dian‐Xiang ZHANG*
1(Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)
2(Graduate University of Chinese Academy of Sciences, Beijing 100049, China)