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 234567) with original publication details: Fl. Peruv. 1: 3 1798.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:66820-2.
This name was in version 1 of The Plant List, record kew-234567, and has not been changed.