This name is a synonym of Nephelea pubescens (Mett. ex Kuhn) R.M. Tryon.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26621226) with original publication details: Linnaea 36: 164 1869.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:295743-2.
This name was in version 1 of The Plant List, record tro-26621226, and has not been changed.