Registered and originated by Sander in 1893.
Seed parent Cattleya forbesii
Pollen parent Cattleya intermedia.
Synonym of Cattleya Isabella (1878).
Note Kew Checklist (and PlantList) show C. x fimbriata Bohnhof (published in Dict. Orch. Hybr. 6 in 1895) as a synonym of C. x isabellae Rchb.f.