The orchid Paphiopedilum Singapore is a hybrid registered with the Royal Horticultural Society by Stewart Inc. in 1983.
Top three species ancestors and their influences are

• Paphiopedilum sukhakulii (37.50%)  subgenus Sigmatopetalum  section: Planipetalum 
• Paphiopedilum purpuratum (25.00%)  subgenus Sigmatopetalum  section: Planipetalum 
• Paphiopedilum lawrenceanum (12.50%)  subgenus Sigmatopetalum  subsection: Barbata