Jeanne: Don't give up on your cross pollenating endeavors. It opens up a whole new world of lily growing enjoyment. And, more and more, there ARE Oriental Trumpets coming on the market which are fertile, both ways, even. It never hurts to try and learn what we can and can not do. In general, it's always easiest and most successful to cross (like with like), Asiatic with Asiatic, Oriental with Oriental, etc.
When checking seed for embryos, lots of times you can see the embryos by just placing the seed on a plain sheet of copy paper by a sunny window and use the aid of a low power magnifying glass.
