This is another Paphiopedilum that strikes controversy. I have several of these and I believe they are distinctly different from all of my ‘regular’ concolor. If anything, these look more like Paph concolor longipetalum (josianae) than they do regular Paph concolor. Paph concolor striatum and Paph concolor longipetalum (josianae) have much thicker leaves than Paph concolor and the leaves are a lot darker green... much like a leucochilum. The underside of the leaves are also very dark. I keep this group separate from my Paph concolor on the chance that they decide in the future they are distinct... what ever that may turn out to be.