The orchid Paphiopedilum Vexillarium is a hybrid registered with the Royal Horticultural Society by Veitch in 1870.
Top three species ancestors and their influences are

• Paphiopedilum barbatum (50.00%)  subgenus Sigmatopetalum  section: Blepharopetalum 
• Paphiopedilum fairrieanum (50.00%)