Rhyncholaeliocattleya William Stewart (Rhyncholaeliocattleya Xanthette × Rhyncholaeliocattleya Golden Slippers)

The orchid Rhyncholaeliocattleya William Stewart is a hybrid in the Rhyncholaeliocattleya genus. registered with the Royal Horticultural Society by Stewart Inc. in 1973. Registered parents are Rhyncholaeliocattleya Xanthette × Rhyncholaeliocattleya Golden Slippers. The key influencing species of this hybrid are Cattleya dowiana (50.20% subgenus Cattleya section: Cattleya ) Cattleya tenebrosa (12.50% subgenus Crispae section: Crispae series: Cattleyodes ) Cattleya bicolor (9.38% subgenus Intermediae ) listed in order of their genetic contribution.