The orchid Paphiopedilum Alexej is a hybrid registered with the Royal Horticultural Society by O.Gruss in 2007. It is originated by R.Klinge
Top three species ancestors and their influences are

• Paphiopedilum rothschildianum (50.00%)  subgenus Polyantha  section: Mastigopetalum 
• Paphiopedilum hangianum (50.00%)