The orchid Cattleya Appam is a hybrid registered with the Royal Horticultural Society by Charlesworth Ltd. in 1916.
Top three species ancestors and their influences are

• Cattleya dowiana (62.50%)  subgenus Cattleya  section: Cattleya 
• Cattleya warscewiczii (12.50%)  subgenus Cattleya  section: Cattleya 
• Cattleya cinnabarina (12.50%)  subgenus Parviflorae  section: Parviflorae   series: Parviflorae