| Name | Hamatocactus Britton & Rose | 
| Authorship | Britton & Rose | 
| Rank | Genus | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Cactaceae | 
| Contains | Hamatocactus crassihamatus (F.A.C.Weber) Buxb. Hamatocactus haematacanthus (Muehlenpf.) F.M.Knuth Hamatocactus hamatacanthus (Muehlenpfordt) F. M. Knuth Hamatocactus hamatocanthus (Houghton) W.T.Marshall Hamatocactus setispinus (Engelm.) Britton & Rose Hamatocactus sinuatus (A.Dietr.) Orcutt Hamatocactus sp. Hamatocactus uncinatus (Galeotti) Galeotti ex Borg Hamatocactus wrightii (Engelm.) Orcutt | 
| Remarks | Type: H. setispinus (Engelm.) Britton & Rose (based on Echinocactus setispinus Engelm.) | 
| GUID | urn:lsid:ipni.org:names:298203-2 | 
| Citation | 1922 Cactaceae (Britton & Rose) 3: 104 |