Abstract:Appendicula ovalis (Schltr.) J.J.Sm. ex Mansf, found in Hainan Tropical Rainforest National Park, was reported as a newly recorded species of Orchidaceae in China. It is originally distributed in Peninsular Malaysia, Sumatra, Java, Borneo and Sulawesi. It is different from four species of Appendicula recorded in China by morphology of branches in middle of stem, broad ovate leaf blades, single inflorescence bears only one flower and twisted lips with pink-purple markings. The detailed morphological and habitat description, and high- definition anatomy photograph of the newly recorded species are provided. Voucher specimen was deposited in the herbarium of College of Forestry, Hainan University (HUFB).