Melocactus ernestii
Melocactus ernestii in Monatsschr. Kakteenk. 30: 8. 1920 sec. Taylor & Zappi 20041 wfo-0000375382
- ≡Melocactus oreas subsp. ernestii in Bradleya 6: 95. 1988 syn. sec. ??? wfo-0001289561
- ≡Melocactus ernestii subsp. ernestii syn. sec. Taylor & Zappi 20041 wfo-0001289570
- =Melocactus erythracanthus in Cact. Succ. J. (Los Angeles) 45: 223. 1973 syn. sec. Taylor & Zappi 20042 wfo-0001289562
- ≡Melocactus oreas f. erythracanthus in Bradleya 6: 95. 1988 syn. sec. Taylor & Zappi 20042 wfo-0001289563
- =Melocactus azulensis in Kakteen And. Sukk. 28: 154. 1977 syn. sec. Taylor & Zappi 20043 wfo-0001289564
- ≡Melocactus oreas f. azulensis in Bradleya 6: 95. 1988 syn. sec. Taylor & Zappi 20043 wfo-0001289565
- =Melocactus longispinus in Succulenta (Netherlands) 56(6): 137. 1977 syn. sec. Taylor & Zappi 20044 wfo-0001289566
- ≡Melocactus oreas var. longispinus in Bradleya 6: 95. 1988 syn. sec. Taylor & Zappi 20044 wfo-0001289567
- =Melocactus interpositus, Kakteen Südamerika 1: 140. 1979 syn. sec. Taylor & Zappi 20045 wfo-0001289568
- =Melocactus nitidus, Kakteen Südamerika 1: 139. 1979 syn. sec. Taylor & Zappi 20046 wfo-0001289569