Melocactus concinnus
Melocactus concinnus in Kakteen And. Sukk. 23: 7. 1972 sec. Zappi & Taylor 2020+1 wfo-0001289711
- ≡Melocactus pruinosus var. concinnus in Bradleya 6: 95. 1988 syn. sec. ??? wfo-0001289712
- =Melocactus pruinosus in Notizbl. Bot. Gart. Berlin-Dahlem 12: 228. 1934 syn. sec. Taylor & Zappi 20042 wfo-0001289707
- =Melocactus axiniphorus in Succulenta (Netherlands) 55(10): 194. 1976 syn. sec. Taylor & Zappi 20043 wfo-0001289708
- ≡Melocactus concinnus subsp. axiniphorus in Schumannia 3: 188. 2002 syn. sec. Taylor & Zappi 20043 wfo-0001432456
- =Melocactus robustispinus in Succulenta (Netherlands) 56: 116–119. 1977 syn. sec. Taylor & Zappi 20044 wfo-0001289709
- ≡Melocactus zehntneri subsp. robustispinus in Bradleya 6: 98. 1988 syn. sec. Kew 20195 wfo-0001289710