This name is a synonym of Cypripedium macranthon var. taiwanianum (Masam.) F. Maek..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50052185) with original publication details: Nat. Orch. Nippon 3: 31 1933.
This name was in version 1 of The Plant List, record tro-50052185.