Melocactus zehntneri var. curvicornis (Buining & Brederoo) P.J.Braun in Bradleya 6: 98. 1988 Melocactus zehntneri var. curvicornis (Buining & Brederoo) P.J.Braun in Bradleya 6: 98. 1988is new combination for Melocactus curvicornis Buining & Brederoo in Kakteen And. Sukk. 23: 33. 1972Taxon for this nameMelocactus zehntneri var. curvicornis (Buining & Brederoo) P.J.Braun