| Name | Mammillaria geminispina Haworth |
| Authorship | Haworth |
| Rank | Species |
| Placed in | Mammillaria Haworth |
| Citation | 1824 Philos. Mag. J. 63: 42 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Mammillaria geminispina Haworth |
| Identification made in | [no date] (2) |
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