Vickie -
Hmmmm .... from my pedigree chart, there is no connection between Whooperee and Roses in Snow ..... except that Whooperee is the pod parent of Mama's Cherry Pie. But I do think that there is some resemblance between RIS and MCP in bloom appearance though. Which confused me at first when trying to ID the parents of my seedlings .... only to find out, of course, that BOTH are parents of my 4 seedlings.
I do get really irritated when I look up a cultivar on AHS and there isn't a photo. Why even bother to register a daylily if you can't even provide a photo of a single bloom? Where is any kind of proof that this cultivar even exists? Grrrr ....