Melocactus bellavistensis subsp. onychacanthus
Melocactus bellavistensis subsp. onychacanthus in Bradleya 9: 66. 1991 sec. Hunt 20061
- ≡Melocactus onychacanthus in Succulenta (Netherlands) 46: 40. 1967 syn. sec. Hunt 20061
- =Melocactus onychacanthus var. conicus, Kakteen Südamerika 4: 1308, f. 1173. 1981 syn. sec. Kew WCVP (2019)3