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 |