Melocactus bellavistensis subsp. onychacanthus (F.Ritter) N.P.Taylor in Bradleya 9: 66. 1991
Melocactus bellavistensis subsp. onychacanthus in Bradleya 9: 66. 1991
is new combination for Melocactus onychacanthus in Succulenta (Netherlands) 46: 40. 1967
Melocactus bellavistensis subsp. onychacanthus in Bradleya 9: 66. 1991