The orchid Dendrobium Yong Kok Wah is a hybrid registered with the Royal Horticultural Society by Teoh Eng Soon in 1977. It is originated by O/U
Top three species ancestors and their influences are

• Dendrobium schulleri (75.00%)  section: Spatulata 
• Dendrobium discolor (12.50%)  section: Spatulata 
• Dendrobium bigibbum var. superbum (6.25%)