This name is a synonym of Oenothera elata var. hirsutissima (A. Gray ex S. Watson) Cronquist.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50090896) with original publication details: Leafl. W. Bot. 2(9): 157 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:173084-2.
This name was in version 1 of The Plant List, record tro-50090896.