This name is a synonym of Acianthera eximia (L.O.Williams) Solano.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 159879) with original publication details: Amer. Orchid Soc. Bull. 11: 166 1942.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:202790-2.
This name was in version 1 of The Plant List, record kew-159879.