Cattleya lueddemanniana var semi-alba 'Tibisay'
 

One of the good semi-alba clones of this splendid Venezuelan species.

And here in Brazil some people are fighting about the "Queen of Orchids": LP vs. C. labiata
I'll never post my opinion in a brazilian board, but here I can do: in terms of Tribe Laelinea, there's no brazilian orchid that may even be compared to C. lueddemanniana! And I say more: my second place is C. gaskelliana! Would being I too much radical?