The orchid Vanda Theptong is a hybrid registered with the Royal Horticultural Society by O.Thephasdin in 1975.
Top three species ancestors and their influences are

• Vanda denisoniana (50.00%)  section: Obtusiloba 
• Vanda sanderiana (34.38%)  section: Roeblingiana 
• Vanda curvifolia (12.50%)  section: Ascocentrum