Oenothera biennis subsp. rubricaulis (Klebahn) Stomps nom. illeg.
Oenothera biennis subsp. rubricaulis (Klebahn) Stomps nom. illeg. is a synonym sensu FNA Ed. Comm., 2021 of:
Oenothera biennis Linnaeus, an accepted species name sensu FNA Ed. Comm., 2021.