Phal bellina x Phal violacea indigo blue

[Roberta]

I don't know what sort of distinctions you are proposing. It's really pretty straightforward - a cultivar represents a specific individual. Unlike humans or animals, it is possible for a genetic duplicate of a plant (orchid or otherwise) to exist - by division or cloning. But the cultivar name represents the unique genetics of the original. Any other form of reproduction produces individuals that are not identical.