Mammillaria sphaerica subsp. paulii (Linzen) Lodé in Cact.-Avent. Int. 98(Suppl.): 5. 2013
Mammillaria sphaerica subsp. paulii in Cact.-Avent. Int. 98(Suppl.): 5. 2013
is new combination for Mammillaria paulii in Mitteilungsbl. Arbeitskreises Mammillarienfr. 29: 139. 2005