Gastrochilus D.Don is a genus of epiphytic or lithophytic monopodial orchids represented by 53 species distributed from India to Malesia and Japan (Govaerts et al. 2013). Twenty-nine species have been reported from China, of which 17 are believed to be endemic (Chen et al. 2009). The genus is defined by the broad epichile and typically saccate hypochile of the lip which is attached to the base of the column, and by the short axillary inflorescence.