bummer about the mislabelling...

i've noticed that within that particular grouping of plants, there's also a Tolumnia Black Beauty, which used to be called Oncidium Black Beauty.

Also the following are orchids with the grex name:-

Blc Black Beauty
Brassidium Black Beauty
Phalaenopsis Black Beauty
Rodrettia Black Beauty
Vanda Black Beauty

and of course
Paph Black Beauty

look forward to seeing the plant in bloom... it sure makes it easier to ID them that way... although some hybrids are near nigh impossible to do so...