This name is a synonym of Oenothera primiveris var. bufonis (M.E. Jones) Cronquist.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 23201410) with original publication details: Contr. W. Bot. 8: 28–29 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:281521-2.
This name was in version 1 of The Plant List, record tro-23201410.