Mammillaria duwei Rogoz. & P.J.Braun in Kakteen And. Sukk. 36: 164. 1985 sec. Hunt 2016
- ≡Mammillaria nana subsp. duwei, Cactus File Handb. 6: 203. 1999 syn. sec. Hernández & Gómez-Hinostrosa 2015
- ≡Mammillaria trichacantha subsp. duwei (Rogoz. & P.J.Braun) Mottram in J. Mammillaria Soc. 40: 8. 2000 syn. sec. ???
