Coryphantha clavata var. radicantissima (Quehl) Heinrich ex Backeb., Cactaceae 5: 2995. 1961 Coryphantha clavata var. radicantissima (Quehl) Heinrich ex Backeb., Cactaceae 5: 2995. 1961is new combination for Mammillaria radicantissima Quehl in Monatsschr. Kakteenk. 22: 164. 1912Taxon for this nameCoryphantha clavata var. radicantissima (Quehl) Heinrich ex Backeb.