Sorry Psyched, Cattleya and Dend are incompatible too.
You get these things called alliances, and for the most part, not always, these will be able to be crossed. ie, the Cattleya alliance - Catts, Laelias, Brassavolas, Barkerias, Sophronitis etc. will all, for he most part, cross.
but, a Cattleya and a Dendrobium, or a Phal, or anything else not in the same alliance, will NOT cross!