I posted this question on the AHS Daylily Robin, as I remember reading or hearing that it could not be done. The consensus is that the cross can sometimes sucessfully be done between plants of the same GENUS, but not from one FAMILY to another. Also, between genuses, the offspring would, like a mule, be sterile. So, if you are sucessful in making that cross work, you will be breaking several laws, and we cannot bail you out. Again.
Merry Christmas,
David