Mammillaria dixanthocentron Backeb. ex Mottram Mammillaria dixanthocentron Backeb. ex Mottram, Descr. Cact. Nov. 3: 8. 1963 sec. Hunt 2016=Mammillaria dixanthocentron var. rubrispina R. Wolf in Kakteen And. Sukk. 38: 46. 1987 syn. sec. Guzmán & al. 2003