Coryphantha radians var. pectinata (Engelm.) Borg, Cacti, ed. 1: 294. 1937 Coryphantha radians var. pectinata (Engelm.) Borg, Cacti, ed. 1: 294. 1937is new combination for Mammillaria pectinata Engelm. in Proc. Amer. Acad. Arts 3: 266–267. 1856Taxon for this nameCoryphantha radians var. pectinata (Engelm.) Borg