Discocactus rapirhizus Buining & Brederoo in Ashingtonia 2: 44. 1975 Discocactus rapirhizus Buining & Brederoo in Ashingtonia 2: 44. 1975is basionym for Discocactus catingicola subsp. rapirhizus (Buining & Brederoo) P.Braun & Esteves in Kakteen And. Sukk. 44: 112. 1993Taxon for this nameDiscocactus rapirhizus Buining & Brederoo