This name is a synonym of Cnemidaria mutica var. grandis (Maxon) Stolze.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26616750) with original publication details: Rozpr. Kral. Ceske Spolecn. Nauk, Tr. Mat.-Prir. 2: 264 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:73366-2.
This name was in version 1 of The Plant List, record tro-26616750, and has not been changed.