This name is a synonym of Gymnosphaera holttumii (Copel.) Copel..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50180742) with original publication details: Philipp. J. Sci. 56: 472 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17382670-1.
This name was in version 1 of The Plant List, record tro-50180742, and has not been changed.