The orchid Vanda Yip Sum Wah is a hybrid registered with the Royal Horticultural Society by Yip Sum Wah in 1965. It is originated by T.Fukumura
Top three species ancestors and their influences are

• Vanda curvifolia (50.00%)  section: Ascocentrum 
• Vanda sanderiana (37.50%)  section: Roeblingiana 
• Vanda luzonica (6.25%)  section: Deltoglossa