This name is a synonym of Oenothera pubescens Willd. ex Spreng..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 23200999) with original publication details: Amer. J. Bot. 22: 656 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:173122-2.
This name was in version 1 of The Plant List, record tro-23200999.