This name is a synonym of Oenothera avita subsp. eurekensis (Munz & J.C. Roos) W.M. Klein.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 23201406) with original publication details: Aliso 3(2): 118–119, f. 7 1955.
This name was in version 1 of The Plant List, record tro-23201406.