The orchid Cattleya Rubens (1903) is a hybrid registered with the Royal Horticultural Society by Sanders[St Albans] in 1903.
Top three species ancestors and their influences are

• Cattleya pumila (50.00%)  subgenus Crispae  section: Hadrolaelia   series: Hadrolaelia 
• Cattleya dowiana (25.00%)  subgenus Cattleya  section: Cattleya 
• Cattleya warscewiczii (25.00%)  subgenus Cattleya  section: Cattleya