The orchid Renantanda Memoria Sun Yat-Sen is a hybrid registered with the Royal Horticultural Society by Andrew Peh in 1982. It is originated by A.Peh & Peh Eng Kee
Top three species ancestors and their influences are

• Renanthera storiei (50.00%)
• Vanda sanderiana (43.75%)  section: Roeblingiana 
• Vanda dearei (6.25%)  section: Deltoglossa