The orchid Vanda Dong Tarn is a hybrid registered with the Royal Horticultural Society by C.Sakuldejtana in 1973.
Top three species ancestors and their influences are

• Vanda curvifolia (50.00%)  section: Ascocentrum 
• Vanda sanderiana (37.50%)  section: Roeblingiana 
• Vanda coerulea (12.50%)  section: Longicalcarata