| Name | Oenothera grandis (Britton) Smyth |
| Authorship | (Britton) Smyth |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Oenothera Linnaeus |
| Holdings | 38 Specimens held in the Harvard University Herbaria identified as Oenothera grandis (Britton) Smyth |
| Identification made in | [no date] (6), 1913 (1), 1978 (30), 1981 (1) |