| Name | Oenothera siambonensis W. Dietrich |
| Authorship | W. Dietrich |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Oenothera Linnaeus |
| GUID | urn:lsid:ipni.org:names:173404-2 |
| Citation | 1978 Ann. Missouri Bot. Gard. 64: 602 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Oenothera siambonensis W. Dietrich |
| Identification made in | [no date] (1), 1974 (1), 1981 (1) |