The orchid Paphiopedilum Yerba Buena is a hybrid registered with the Royal Horticultural Society by Rod McLellan Co. in 1955. It is originated by E.W.McLellan
Top three species ancestors and their influences are

• Paphiopedilum insigne (69.53%)  subgenus Paphiopedilum  section: Paphiopedilum 
• Paphiopedilum spicerianum (16.70%)
• Paphiopedilum villosum (6.84%)  subgenus Paphiopedilum  section: Paphiopedilum