| Name | Opuntia millspaughii Britton |
| Authorship | Britton |
| Rank | Species |
| Placed in | Opuntia |
| Citation | 1908 Smithsonian Misc. Collect. 50: 513 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Opuntia millspaughii Britton |
| Identification made in | [no date] (2) |
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