| Name | Echinocactus simpsonii Engelmann |
| Authorship | Engelmann |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Echinocactus |
| GUID | urn:lsid:ipni.org:names:87733-2 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Echinocactus simpsonii Engelmann |
| Identification made in | [no date] (1) |