Cattleya loddigesii or harrisoniae?

[Rosim_in_BR]

Hi, Claudia!
Your flower is undoubtedly Cattleya harrisoniana. Cattleya harrisoniana is recognized as a true species Royal Botanic Gardens, Kew: World Checklist Series and also is considered for hybrid registration. C. loddigesii is a winter bloomer while C. harrisoniana a summer bloomer. They do not overlap in the nature. There is a lot of misunderstanding about it, which only makes things more difficult for all. Things like interbreeding with C. loddigesii due to overlapping habitats give the idea that they co-exist and this is not true. The structure of the lip also presents relevant taxonomic differences.