The orchid Paphiopedilum Pacific Shamrock is a hybrid registered with the Royal Horticultural Society by Orchid Zone in 1998. It is originated by T.Root
Top three species ancestors and their influences are

• Paphiopedilum insigne (49.50%)  subgenus Paphiopedilum  section: Paphiopedilum 
• Paphiopedilum spicerianum (18.86%)
• Paphiopedilum villosum (15.55%)  subgenus Paphiopedilum  section: Paphiopedilum