| Name | Melocactus smithii (Alexander) Buining ex G. D. Rowley |
| Authorship | (Alexander) Buining ex G. D. Rowley |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Melocactus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Melocactus smithii (Alexander) Buining ex G. D. Rowley |
| Identification made in | [no date] (1) |