Melocactus depressus (Aiton) Hook. species synonym

Melocactus melocactoides f. depressus (Hook.) Rizzini form synonym

Melocactus violaceus subsp. violaceus subspecies accepted

Melocactus melocactoides (Hoffmanns.) DC. species synonym

Melocactus margaritaceus Rizzini species synonym

Melocactus violaceus subsp. ritteri N.P.Taylor subspecies accepted

Melocactus violaceus subsp. natalensis P.J.Braun & Esteves subspecies synonym

Melocactus violaceus subsp. margaritaceus N.P.Taylor subspecies accepted

Melocactus pentacentrus Lem. species synonym

Melocactus parthonii Miq. species synonym

Melocactus melocactoides var. violaceus (Pfeiff.) Rizzini variety synonym

Melocactus melocactoides f. sanctaritae Rizzini form synonym

Melocactus melocactoides f. perspinosus Rizzini form synonym

Melocactus melocactoides var. natalensis Rizzini variety synonym

Melocactus melocactoides var. itaipuassuensis Rizzini variety synonym

Melocactus melocactoides f. exsanguis Rizzini form synonym

Melocactus melocactoides var. depressus (Hook.) Rizzini variety synonym

Melocactus melocactoides f. capensis Rizzini form synonym

Melocactus margaritaceus var. salvadoranus Rizzini variety synonym

Melocactus margaritaceus var. disciformis Rizzini variety synonym

Melocactus macrodiscus var. minor Ritter variety synonym

Melocactus goniodacanthus Lem. species synonym

Melocactus ellemeetii Miq. species synonym

Cereus meonacanthus Link & Otto ex Steud. species synonym

Echinocactus meonacanthus Link & Otto species synonym

Echinocactus melocactoides Lem. species synonym

Cactus depressus (Aiton) Borg species synonym

Cactus meonacanthus Lem. ex Steud. species synonym

Cactus melocactoides Hoffmanns. species synonym

Cactus melocactus var. depressus Aiton variety synonym

Melocactus gardenerianus J.R.Booth ex C.F.Först. species synonym

Melocactus melocactoides f. civitatis Rizzini form synonym

Melocactus gardenerianus J.R.Booth species homotypic synonym

Cactus meonacanthus Lem. species homotypic synonym

Cereus meonacanthus Link & Otto species homotypic synonym

Melocactus pentacetrus Lem. species synonym