Mammillaria duoformis
Mammillaria duoformis in Allan Hancock Found. Publ. Occas. Pap. 2: 59. 1948 sec. Hunt 20161 wfo-0001288323
- =Mammillaria hamata var. principis, Monogr. Cact.: 34. 1853 syn. sec. Kew 20192 wfo-0001431985
- =Mammillaria duoformis var. rectiformis in Allan Hancock Found. Publ. Occas. Pap. 2: 60. 1948 syn. sec. Kew 20193 wfo-0001431889
- =Mammillaria rossiana in Kakteen And. Sukk. 9: 119. 1958 syn. sec. Hunt 20164 wfo-0000369159
- =Mammillaria erythrocalix in Cact. Suc. Mex. 11: 17. 1966 syn. sec. Hunt 20165 wfo-0000369810
- =Mammillaria duoformis var. xuchiapensis, Gattung Mammill. nach dem Heutigen Stand Meines Wissens: 104. 1987 syn. sec. Kew 20196 wfo-0001431891
- =Mammillaria claviformis, Gattung Mammill. nach dem Heutigen Stand Meines Wissens: 91. 1989 syn. sec. Hunt 20167 wfo-0000369896
- –Mammillaria duoformis var. typica in Allan Hancock Found. Publ. Occas. Pap. 2: 59. 1948, nom. inval. syn. sec. Kew 20198 wfo-0001431890