Mammillaria karwinskiana Mart. subsp. karwinskiana in Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 16: 335. 1832 sec. Hunt 2016
- =Mammillaria fischeri Pfeiff. in Allg. Gartenzeitung 4: 257. 1836 syn. sec. Guzmán & al. 2003
- =Cactus karwinskianus (Mart.) Kuntze, Revis. Gen. Pl. 1: 260. 1891 syn. sec. Guzmán & al. 2003
- =Neomammillaria confusa Britton & Rose, Cactaceae (Britton & Rose) 4: 102. 1923 syn. sec. Guzmán & al. 2003
- =Neomammillaria conzattii Britton & Rose, Cactaceae (Britton & Rose) 4: 103. 1923 syn. sec. Guzmán & al. 2003
- =Neomammillaria karwinskiana (Mart.) Britton & Rose, Cactaceae (Britton & Rose) 4: 95. 1923 syn. sec. Guzmán & al. 2003
- =Mammillaria confusa (Britton & Rose) Orcutt, Cactography 7. 1926 syn. sec. Guzmán & al. 2003
- =Mammillaria conzattii (Britton & Rose) Orcutt, Cactography 7. 1926 syn. sec. Guzmán & al. 2003
- =Mammillaria strobilina Tiegel in Möller's Deutsche Gärtn.-Zeitung 48: 329. 1933 syn. sec. Guzmán & al. 2003
- =Mammillaria confusa var. centrispina R.T. Craig, Mammillaria Handb.: 25. 1945 syn. sec. Guzmán & al. 2003
- =Mammillaria confusa var. conzattii (Britton & Rose) R.T. Craig, Mammillaria Handb.: 24. 1945 syn. sec. Guzmán & al. 2003
- =Mammillaria confusa var. robustispina R.T. Craig, Mammillaria Handb.: 25. 1945 syn. sec. Guzmán & al. 2003
- =Mammillaria neomystax Backeb. in Cactus (Paris) 31, supl.: 5-6. 1952 syn. sec. Guzmán & al. 2003
- =Mammillaria ebenacantha Schmoll ex Backeb., Cactaceae (Backeberg) 5: 3469. 1961 syn. sec. Guzmán & al. 2003
- =Mammillaria confusa f. strobilina (Tiegel) Fittkau in Cact. Succ. J. (Los Angeles) 42: 183. 1970 syn. sec. ???