Melocactus deinacanthus Buining & Brederoo in Kakteen And. Sukk. 24: 217. 1973 Melocactus deinacanthus Buining & Brederoo in Kakteen And. Sukk. 24: 217. 1973Taxon for this nameMelocactus deinacanthus Buining & Brederoo in Kakteen And. Sukk. 24: 217. 1973