The orchid Paphiopedilum Memoria Clifford Walters is a hybrid registered with the Royal Horticultural Society by T.Larkin in 2002.
Top three species ancestors and their influences are

• Paphiopedilum philippinense (50.00%)  subgenus Polyantha  section: Mastigopetalum 
• Paphiopedilum sukhakulii (26.56%)  subgenus Sigmatopetalum  section: Planipetalum 
• Paphiopedilum callosum (12.50%)  subgenus Sigmatopetalum  subsection: Barbata