Rio is gorgeous and huge blooms but yes they are hybrids. I had several a few years ago.
I think I have moved what was obvious to me and am happy to help anytime you need my "expert advice."
I'd love to devote time to finding photos for the missing entries. When it belongs to a nursery, how do I go about that?
I will also upload more of my own photos.
Plus I will be editing my article from 2010 to bring it up to date and fresher.