Dendrobium/Oncidium Cross Pollination

[shadec]

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!

[Psyched]

Yes shadec, I am aware of that. That's why I mentioned in my post also my doubt of the crossing between Cattleya and Dendrobium ever happening.

Morphologically speaking, some Dendrobium section (in this case latourea) very closely resemble a member of Cattleya alliance. Even Dendrobium speciosum pseudobulb is very smiliar to those of Schomburgkia's. But that does not mean it is compatible in genetical level.

Crossing between sympodial and monopodial, in this case phal, is very much out of the question.