Oenothera glazioviana

Oenothera glazioviana is a species of flowering plant in the evening primrose family known by the common names large-flowered evening-primrose and redsepal evening primrose. Oenothera lamarckiana was formerly believed to be a different species, but is now regarded as a synonym of Oe. glazioviana.

The plant can be found in scattered locations worldwide, mostly as an introduced species. It originated in Brazil.

It has long been cultivated as an ornamental plant. In some locations it has become an invasive species.