compatible plants data?

[Stelios]

I have a question or better a need for education on a matter.
I learned how to check for the parents of a hybrid on RHS and how to check if there are registered hybrids in the data base of 2 parents or at some time one parent along most of the registered mates it had.

However i don;t know where i could find info on theoretically compatible parents of a hybrid.

Let's say i have 2 dens, can they produce a seed pod no matter what dens they are or there are subgroups of similar/compatible genes? is there an online database/resource site with info on gene count and educational articles on hybrids?

Well i am asking because i have 2 awesome looking (to my eyes) dens that i would like to try crossing but i don't want to sacrifice the flowers in vain.

[kmarch]

Usually orchids of the same genus will cross. Some won't because of differences in chromosome counts, etc. but usually they will.

Also often times members of the same alliance will cross. For example in the Cattleya Alliance we have cattleyas, laelias, sophronities, encyclias, epidendrums, broughtonia, etc., etc., etc. most of which are all pretty much interbreedable (if that's a word).

[Stelios]

So a den victoria reginae and a den antennatum could cross?! I can't find a registered cross I wonder why none tried it