The orchid Phalaenopsis Little Sister is a hybrid registered with the Royal Horticultural Society by Hager Orch. in 1973.
Top three species ancestors and their influences are

• Phalaenopsis maculata (50.00%)  subgenus Polychilos  section: Amboinenses 
• Phalaenopsis equestris (50.00%)  subgenus Phalaenopsis  section: Stauroglottis