The orchid Vanda Leng is a hybrid registered with the Royal Horticultural Society by T.Orchids in 1972. It is originated by S.Rakpaibulsombat
Top three species ancestors and their influences are

• Vanda sanderiana (56.25%)  section: Roeblingiana 
• Vanda curvifolia (25.00%)  section: Ascocentrum 
• Vanda coerulea (7.81%)  section: Longicalcarata