This name is a synonym of Oenothera tetraptera Cav..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 23202256) with original publication details: Nom. Bot. Hort. 561 1821.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:613893-1.
This name was in version 1 of The Plant List, record tro-23202256.