The orchid Paphiopedilum Lefty Kei is a hybrid registered with the Royal Horticultural Society by N.Mochizuki in 2003.
Top three species ancestors and their influences are

• Paphiopedilum sanderianum (50.00%)  subgenus Polyantha  section: Mastigopetalum 
• Paphiopedilum rothschildianum (25.00%)  subgenus Polyantha  section: Mastigopetalum 
• Paphiopedilum wilhelminae (25.00%)  subgenus Polyantha  section: Coelopedilum