The orchid Vanda Thonglor (1974) is a hybrid registered with the Royal Horticultural Society by T.Orchids in 1974.
Top three species ancestors and their influences are

• Vanda sanderiana (78.13%)  section: Roeblingiana 
• Vanda coerulea (18.75%)  section: Longicalcarata 
• Vanda luzonica (3.13%)  section: Deltoglossa