⚠ Version 1 of The Plant List has been superseded.

This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Oenothera biennis in version 1.1 of The Plant List.

Oenothera biennis var. grandiflora (L'Hér.) Torr. & A. Gray is a synonym of Oenothera glazioviana Micheli

This name is a synonym of Oenothera glazioviana Micheli.

The record derives from Tropicos which reports it as a synonym (record 23202250) with original publication details: Fl. N. Amer. 1(3): 492 492 1840.