Phalaenopsis japonica is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Vandeae, subtribe: Aeridinae,  
Genus Phalaenopsis   subgenus Hygrochilus
Infraspecific taxa recognized within Phalaenopsis japonica: infraspecific taxa
This species is found in China (W. Yunnan, Zhejiang), Korea (Jeollanam-do), SC. & S. Japan to Nansei-shoto.