Discocactus zehntneri subsp. alspinus (Buining ex Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus spinosior Buining & Brederoo species synonym

Cactus placentiformis Lehm. species synonym

Discocactus pugionacanthus Buining & Brederoo species synonym

Discocactus pseudolatispinus subsp. pseudolatispinus subspecies synonym

Discocactus gentryi S.M.Hayden species accepted

Discocactus boliviensis subsp. ferricola (Buining & Brederoo) Guiggi subspecies synonym

Discocactus placentiformis var. pugionacanthus (Buining & Brederoo) P.J.Braun & Esteves variety synonym

Discocactus placentiformis var. alteolens (Lem.) P.J.Braun & Esteves variety synonym

Discocactus hartmannii var. patulifolius (Buining & Brederoo) P.J.Braun variety synonym

Discocactus hartmannii var. magnimammus (Buining & Brederoo) P.J.Braun variety synonym

Discocactus catingicola var. griseus (Buining & Brederoo) P.J.Braun & Esteves variety synonym

Discocactus milticolorispinus P.J.Braun & Brederoo species synonym

Discocactus magnimammus subsp. bonitoensis Buining & Brederoo subspecies synonym

Echinocactus alteolens (Lam. ex A.Dietr.) K.Schum. species synonym

Discocactus zehntneri Britton & Rose species accepted

Discocactus zehnteri species accepted

Discocactus placentiformis (Lehm.) K.Schum. species accepted

Discocactus magnimammus Buining & Brederoo species synonym

Discocactus latispinus Buining ex J.Theun. species synonym

Discocactus heptacanthus (Rodr.) Britton & Rose species accepted

Discocactus hartmannii (K.Schum.) Britton & Rose species accepted

Discocactus diersianus Esteves species accepted

Discocactus crassispinus P.J.Braun & Esteves species synonym

Discocactus catingicola Buining & Brederoo species accepted

Discocactus bahiensis Britton & Rose species accepted

Discocactus praminentigibbus Diers & Esteves species synonym

Melocactus placentiformis (Lehm.) DC. species synonym

Melocactus besleri Link & Otto species synonym

Echinocactus placentiformis (Lehm.) K.Schum. species synonym

Echinocactus hartmannii K.Schum. species synonym

Discocactus estevesii Diers species synonym

Echinocactus alteolens Lem. species synonym

Discocactus woutersianus Brederoo & Broek species synonym

Discocactus tricornis Monv. ex Pfeiff. & Otto species synonym

Discocactus subnudus Britton & Rose species doubtful

Discocactus spinosior Buining ex J.Theun. species synonym

Discocactus silvaticus Buining ex J.Theun. species synonym

Discocactus silicicola Buining & Brederoo species synonym

Discocactus rapirhizus Buining & Brederoo species synonym

Discocactus rapirhizua, 1975 species synonym

Discocactus pulvinicapitatus Buining & Brederoo species synonym

Discocactus pugionacanthus Buining ex J.Theun. species synonym

Discocactus pseudolatispinus Diers & Esteves species synonym

Discocactus pseudoinsignis N.P.Taylor & Zappi species accepted

Discocactus prominentigibbus Diers & Esteves species synonym

Discocactus promentigibbus Diers & Esteves species synonym

Discocactus placentiformis subsp. pugionacanthus (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus placentiformis subsp. multicolorispinus (P.J.Braun & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus placentiformis subsp. alteolens (Lem.) P.J.Braun & Esteves subspecies synonym

Discocactus piauiensis P.J.Braun & Esteves species synonym

Discocactus patulilolius Buining & Brederoo species synonym

Discocactus patulifolius Buining & Brederoo species synonym

Discocactus pachythele Buining & Brederoo species synonym

Discocactus nigrisaetosus Buining ex J.Theun. species synonym

Discocactus multicolorispinus P.J.Braun & Brederoo species synonym

Discocactus mamillosus Buining & Brederoo species synonym

Discocactus magnimammus subsp. bonitoensis Buining ex J.Theun. subspecies synonym

Discocactus linkii Pfeiff. species synonym

Discocactus lehmannii Pfeiff. species synonym

Discocactus latispinus subsp. pulvinicapitatus (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus latispinus subsp. pseudolatispinus (Diers & Esteves) P.J.Braun & Esteves subspecies synonym

Discocactus lankesteri Kimnach, 1979 species accepted

Discocactus insignis Pfeiff. species synonym

Discocactus horstii Buining & Brederoo species accepted

Discocactus horichii Kimnach, 1979 species accepted

Discocactus heptacanthus subsp. magnimammus (Buining & Brederoo) N.P.Taylor & Zappi subspecies synonym

Discocactus heptacanthus subsp. catingicola (Buining & Brederoo) N.P.Taylor & Zappi subspecies synonym

Discocactus hartmannii subsp. patulifolius (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus hartmannii var. mamillosus (Buining & Brederoo) P.J.Braun variety synonym

Discocactus hartmannii subsp. magnimammus (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus hartmannii subsp. giganteus P.J.Braun & Esteves subspecies synonym

Discocactus hartmannii var. bonitoensis (Buining & Brederoo) P.J.Braun variety synonym

Discocactus griseus Buining & Brederoo species synonym

Discocactus ferricola Buining & Brederoo species accepted

Discocactus crystallophilus Diers & Esteves species synonym

Discocactus crassispinus subsp. araguaiensis P.J.Braun & Esteves subspecies synonym

Discocactus catingicola subsp. rapirhizus (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus catingicola subsp. rapirhizua (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus catingicola var. nigrisaetosus (Buining & Brederoo) P.J.Braun & Esteves variety synonym

Discocactus catingicola subsp. griseus (Buining & Brederoo) P.J.Braun & Esteves subspecies synonym

Discocactus boliviensis Backeb. species accepted

Discocactus besleri F.A.C.Weber species synonym

Discocactus alteolens K.Schum. species synonym

Echinocactus tricornis Monv. ex A.Dietr. species synonym

Echinocactus subnudus (Britton & Rose) Luetzelb. species synonym

Neodiscocactus hartmannii (K.Schum.) Y.Itô species synonym

Neodiscocactus boliviensis (Backeb. ex Buining) Y.Itô species synonym

Cactus alteolens (Lem.) Kuntze species synonym

Discocactus silvaticus Buining & Brederoo species synonym

Discocactus alteolens (Lem.) A.Dietr. species synonym

Discocactus multicolorispinus subsp. multicolorispinus subspecies synonym

Discocactus latispinus Buining & Brederoo species synonym

Discocactus boliviensis Backeb. ex J.Theun. species synonym

Discocactus fariae-peresii P.J.Braun species accepted

Discocactus boliviensis Backeb. ex Buining species synonym

Discocactus subterraneo-prolifera Diers & Esteves species synonym

Discocactus nigrisaetosus Buining & Brederoo species synonym

Echinocactus tricornis Monv. species homotypic synonym

Discocactus tricornis Monv. species homotypic synonym