Mammillaria nana subsp. duwei (Rogoz. & P.J.Braun) Pilbeam, Cactus File Handb. 6: 203. 1999
Mammillaria nana subsp. duwei, Cactus File Handb. 6: 203. 1999
is new combination for Mammillaria duwei in Kakteen And. Sukk. 36: 164. 1985
Mammillaria nana subsp. duwei, Cactus File Handb. 6: 203. 1999
Taxon for this name