The orchid Paphiopedilum Bob Cryder is a hybrid registered with the Royal Horticultural Society by Stewart Inc. in 1975. It is originated by R.Cryder
Top three species ancestors and their influences are

• Paphiopedilum haynaldianum (50.00%)  subgenus Polyantha  section: Polyantha 
• Paphiopedilum spicerianum (12.50%)
• Paphiopedilum superbiens (12.50%)  subgenus Sigmatopetalum  subsection: Loripetalum