The correct name in Oenothera for Gaura drummondii (Onagraceae)

Abstract

In 2007, Wagner and Hoch proposed the new name Oenothera xenogaura W.L.Wagner & Hoch for the species then known as Gaura drummondii (Spach) Torrey & A. Gray (non O. drummondii Hooker, 1834). However, the authors overlooked the availability of Gaura hispida Bentham (1840) for this species. Accordingly, we herewith make the appropriate new combination for this species, O. hispida (Bentham) W.L.Wagner, Hoch & Zarucchi, and place O. xenogaura in synonymy.