This name is a synonym of Dimerocostus argenteus (Ruiz & Pav.) Maas.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 254657) with original publication details: Bull. Torrey Bot. Club 55: 166 1928.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:164938-2.
This name was in version 1 of The Plant List, record kew-254657, and has not been changed.