Melocactus andinus R. Gruber ex N. P. Taylor species accepted

Melocactus azureus Buining & Brederoo species accepted

Melocactus bahiensis (Britton & Rose) Luetzelb. species accepted

Melocactus bellavistensis Rauh & Backeb. species accepted

Melocactus braunii Esteves species accepted

Melocactus broadwayi (Britton & Rose) A. Berger species accepted

Melocactus caroli-linnaei N. P. Taylor species accepted

Melocactus conoideus Buining & Brederoo species accepted

Melocactus curvispinus Hort. Berol. ex Pfeiff. species accepted

Melocactus ernestii Vaupel species accepted

Melocactus estevesii P. J. Braun species accepted

Melocactus ferreophilus Buining & Brederoo species accepted

Melocactus harlowii (Britton & Rose) Vaupel species accepted

Melocactus heimenii P. J. Braun & Gonç. Brito species accepted

Melocactus inconcinnus Buining & Brederoo species accepted

Melocactus intortus (Mill.) Urb. species accepted

Melocactus lanssensianus P. J. Braun species accepted

Melocactus lemairei (Monv. ex Lem.) Miq. species accepted

Melocactus levitestatus Buining & Brederoo species accepted

Melocactus macracanthos (Salm-Dyck) Link & Otto species accepted

Melocactus matanzanus León species accepted

Melocactus mazelianus Ríha species accepted

Melocactus neryi K. Schum. species accepted

Melocactus oreas Miq. species accepted

Melocactus pachyacanthus Buining & Brederoo species accepted

Melocactus paucispinus Heimen & R. J. Paul species accepted

Melocactus pedernalensis M. M. Mejía & R. G. Garcia species accepted

Melocactus peruvianus Vaupel species accepted

Melocactus praerupticola Areces species accepted

Melocactus salvadorensis Werderm. species accepted

Melocactus schatzlii H. Till & R. Gruber species accepted

Melocactus sergipensis N. P. Taylor & Meiado species accepted

Melocactus smithii (Alexander) Buining ex G. D. Rowley species accepted

Melocactus stramineus Valck. Sur. species accepted

Melocactus violaceus Pfeiff. species accepted

Melocactus × albicephalus Buining & Brederoo species accepted

Melocactus × horridus Werderm. species accepted

Melocactus brederooianus Buining species accepted

Melocactus deinacanthus Buining & Brederoo species accepted

Melocactus glaucescens Buining & Brederoo species accepted

Melocactus santiagoensis D. Barrios & Majure species accepted

Melocactus pruinosus Werderm. species accepted

Melocactus neoviridescens Guiggi species accepted

Melocactus × trachycephalus Valck. Sur. species accepted

Melocactus zehntneri (Britton & Rose) Luetzelb. species accepted