The orchid Dendrobium Tan Tock Seng Hospital is a hybrid registered with the Royal Horticultural Society by S.Y.Alsagoff in 2007.
Top three species ancestors and their influences are

• Dendrobium lasianthera (37.50%)  section: Spatulata 
• Dendrobium tangerinum (25.00%)  section: Spatulata 
• Dendrobium carronii (12.50%)  section: Spatulata