A typical case for the different views in the taxonomy: Lumper and splitter
These plants were originally imported from Borneo and apparently there are only offsprings in the USA
In the German orchid magazine "Die Orchidee" issue 3 1967 assigns Dr. Gustav Schoser this kind as Paph. nigritum. There is also an indication that several taxonomists may also consider this plant to be a Pap barbatum. The staminode looks more like Paph. javanicum / virens than Paph. barbatum
the same opinion:
http://www.orchidspecies.com/paphnigritum.htm
The plants which offered in Europe as Paph. barbatum var. nigritum, however, have not to do with the plant shown here. There are only darker Pap. barbatum
These plants were originally imported from Borneo and apparently there are only offsprings in the USA
In the German orchid magazine "Die Orchidee" issue 3 1967 assigns Dr. Gustav Schoser this kind as Paph. nigritum. There is also an indication that several taxonomists may also consider this plant to be a Pap barbatum. The staminode looks more like Paph. javanicum / virens than Paph. barbatum
the same opinion:
http://www.orchidspecies.com/paphnigritum.htm
The plants which offered in Europe as Paph. barbatum var. nigritum, however, have not to do with the plant shown here. There are only darker Pap. barbatum