Mammillaria duwei Rogoz. & P.J.Braun in Kakteen And. Sukk. 36: 164. 1985
Mammillaria duwei in Kakteen And. Sukk. 36: 164. 1985
is basionym for Mammillaria trichacantha subsp. duwei in J. Mammillaria Soc. 40: 8. 2000
is basionym for Mammillaria nana subsp. duwei, Cactus File Handb. 6: 203. 1999
Mammillaria duwei in Kakteen And. Sukk. 36: 164. 1985