Cattleya Walter Slagle (Cattleya Mary Rose × Cattleya Walter Winchell)

The orchid Cattleya Walter Slagle is a hybrid in the Cattleya genus. registered with the Royal Horticultural Society by Rod McLellan Co. in 1960. Registered parents are Cattleya Mary Rose × Cattleya Walter Winchell. The key influencing species of this hybrid are Cattleya trianae (21.88% subgenus Cattleya section: Cattleya ) Cattleya dowiana (17.19% subgenus Cattleya section: Cattleya ) Cattleya purpurata (12.50% subgenus Crispae section: Crispae series: Cattleyodes ) listed in order of their genetic contribution.