Please help me to identify this cattleya

[Gabriel Borges]

Originally Posted by Roberta

There is LOTS of literature. In fact, I would expect that the Brazilian orchid societies have lots of pictures and references... more than any place else. Also the American Orchid Society AOS.org . There's so much "data" that finding that bit of information that you're seeking in the volume will be the challenge.

Coordenadoria das associações orquidófilas do Brasil, also the websites of the various Brazilian orchid nurseries will have lots of pictures.

I want to share a wonderful book that i've found.

https://www.museu-goeldi.br/assuntos...sileira-ii.pdf

[Oyarzabal]

The Semi Alba I think is a Cattleya Mossiae for the shape of the flower, color, and the shape of the plant.
The time of the year is not that relevant since cattleyas an flower a month, two month and sometimes completely out of season. Right now I do have. Rex, Mossiae, Lobatas, Tenebrosas, Walkerianas, Violeaceas, Eldorado, Warscewiczii, Kerri, Maxima, Lueddemaniana, and Warneri in flower.
Attention to root before flower, or flower before root will shorten the list significantly.

[amarin28]

That's beautiful! Wow! Might need to add a catt to my growing (tiny) collection.

[Keysguy]

That's a gorgeous flower Gabriel.
I would lean toward mossiae but to be perfectly honest, I most times can't tell some of the larger Catts apart unless they they are sitting side by side.

Are you familiar with the IOSPE?

Internet Orchid Species Photo Encyclopedia