| Name | Thelocactus bicolor var. pottsii (Salm-Dyck) Backeberg |
| Authorship | (Salm-Dyck) Backeberg |
| Rank | Variety |
| Placed in | Thelocactus bicolor (Galeotti ex Pfeiffer) Britton & Rose |
| Citation | 1961 Cactaceae (Backeberg) 5: 2809 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Thelocactus bicolor var. pottsii (Salm-Dyck) Backeberg |
| Identification made in | [no date] (1) |
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