This name is a synonym of Costus comosus var. bakeri (K.Schum.) Maas.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 234572) with original publication details: Pflanzenr. IV, 46: 387 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:66822-2.
This name was in version 1 of The Plant List, record kew-234572, and has not been changed.