| Name | Oenothera macrocarpa subsp. oklahomensis (Norton) W. L. Wagner |
| Authorship | (Norton) W. L. Wagner |
| Rank | Subspecies |
| Placed in | Oenothera macrocarpa Nuttall |
| Citation | 1983 Ann. Missouri Bot. Gard. 70(1): 194 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Oenothera macrocarpa subsp. oklahomensis (Norton) W. L. Wagner |
| Identification made in | [no date] (2), 1980 (11) |
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