Bulb. claptonense vs. Bulb. lowii

[TwoStems]

I was browsing around the interwebs today to get a better understanding of what my new bulbo needs to thrive and noticed something interesting: many sites claim that claptonense and lobbii are synonymous, but some claim there is a difference in the lip (mainly a larger bump on the claptonense). The one I purchased is tagged claptonense, and is still fairly young so it probably won't bloom until next year.

I'm curious what you professionals out there say - are they the same, or slightly different? Is this a case of names changing as the years go by?

Thanks in advance