Subspecies, varieties, forms and cultivars of plants belonging to the Melocactus concinnus group

• Melocactus concinnus Buining & Bredero: has dwarfish stems rarely getting up to 15 cm before forming a cephalium, Spines: At first red or black passing to grey with the exception of the darker tips. Distribution: Central Bahia to northern central Minas Gerais.
• Melocactus concinnus subs. axiniphorus (Buining & Bredero) P.J.Braun & Esteves
• Melocactus pruinosus Werderm.
• Melocactus robustispinus Buining & Bredero
• Melocactus seabraensis HU214 West of Seabra, Bahia, Brazil L.Horst & W.Uebelmann: it is a form of Melocactus Concinnus, but not sufficiently differentiated and considered merely a local variant of latter (if not the same). Distribution: West of Seabra, Bahia.