| Name | Pediocactus simpsonii var. minor (Engelmann) Cockerell |
| Authorship | (Engelmann) Cockerell |
| Rank | Variety |
| Placed in | Pediocactus simpsonii (Engelmann) Britton & Rose |
| Citation | 1918 Torreya 18: 180 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Pediocactus simpsonii var. minor (Engelmann) Cockerell |
| Identification made in | [no date] (6) |