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 50094464) with original publication details: Mutations-theorie 1: 327 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:613777-1.
This name was in version 1 of The Plant List, record tro-50094464.