The orchid Cattleya Dellensis is a hybrid registered with the Royal Horticultural Society by Schroder in 1901.
Top three species ancestors and their influences are

• Cattleya purpurata (75.00%)  subgenus Crispae  section: Crispae   series: Cattleyodes 
• Cattleya tigrina (25.00%)  subgenus Intermediae