The orchid Vanda Madame Rattana is a hybrid registered with the Royal Horticultural Society by W.Chunhopakorn in 1974. It is originated by J.Thephasdin
Top three species ancestors and their influences are

• Vanda sanderiana (75.00%)  section: Roeblingiana 
• Vanda dearei (12.50%)  section: Deltoglossa 
• Vanda coerulea (9.38%)  section: Longicalcarata