| Name | Mammillaria vivipara subvar. borealis Engelmann |
| Authorship | Engelmann |
| Rank | Subvariety |
| NomenclaturalStatus | NomLeg |
| Placed in | Mammillaria vivipara (Nuttall) Haworth |
| Citation | 1857 Proc. Amer. Acad. Arts 3: 269 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Mammillaria vivipara subvar. borealis Engelmann |
| Identification made in | [no date] (2), 1983 (1) |
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