| Name | Oenothera trichocalyx var. cognata Jepson |
| Authorship | Jepson |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Oenothera trichocalyx Nuttall |
| GUID | urn:lsid:ipni.org:names:173498-2 |
| Citation | 1925 Man. Fl. Pl. Calif. 681 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Oenothera trichocalyx var. cognata Jepson |
| Identification made in | [no date] (1) |
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