This name is a synonym of Oenothera drummondii Hook..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50129315) with original publication details: Linnaea 12: 268 1838.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:613843-1.
This name was in version 1 of The Plant List, record tro-50129315.