ED MURRAY is a daylily that is said to be able to either set on both tets and dips or set with tets and dips - been a long time (20 years?) since I had the plant and was using it.... Little foggy on the details. There was a lot of discussion about it at the time.
AHS has it as a diploid
http://www.daylilies.org/Dayli...
yet if you look up it's child plants here, you'll see it was a parent of tets and dips.
http://garden.org/plants/group...
So, I guess it is possible that this is one of those plants.
Another thought would be to ask Calif_Sue who moderates our database here. She can check it out, then if she thinks there might be an error, she contacts the AHS Registrar for clarification and or correction.