The orchid Vanda tricolor-Memoria Thianchai is a hybrid . This orchid hybrid lacks official registration. The name is an internal designation created within the orchidroots system.
Top three species ancestors and their influences are

• Vanda tricolor (51.03%)  section: Deltoglossa 
• Vanda sanderiana (20.51%)  section: Roeblingiana 
• Vanda denisoniana (15.63%)  section: Obtusiloba