The orchid Catasetum Memoria Hon San is a hybrid registered with the Royal Horticultural Society by Lee Nam Fook in 2005.
Top three species ancestors and their influences are

• Catasetum pileatum (43.75%)  subgenus Catasetum  section: Catasetum 
• Catasetum expansum (37.50%)  subgenus Catasetum  section: Catasetum 
• Catasetum fimbriatum (12.50%)  subgenus Catasetum  section: Isoceras   subsection: Convergentes