Coryphantha radians var. sulcata (Engelm.) Y.Itô, Cacti, ed. 2: 115. 1952
Coryphantha radians var. sulcata, Cacti, ed. 2: 115. 1952
is new combination for Mammillaria sulcata in Boston J. Nat. Hist. 5(2): 246. 1845
Coryphantha radians var. sulcata, Cacti, ed. 2: 115. 1952