Malacocarpus concinnus (Monv.) Britton & Rose, Cactaceae 3: 192–193. 1922 Malacocarpus concinnus (Monv.) Britton & Rose, Cactaceae 3: 192–193. 1922is new combination for Echinocactus concinnus Monv., Hort. Universel 1: 222. 1839Taxon for this nameMalacocarpus concinnus (Monv.) Britton & Rose