Mammillaria schelhasei Pfeiff. in Allg. Gartenzeitung 6: 274. 1838 Mammillaria schelhasei Pfeiff. in Allg. Gartenzeitung 6: 274. 1838is basionym for Neomammillaria schelhasei (Pfeiff.) Britton & Rose, Cactaceae 4: 149. 1923Taxon for this nameMammillaria schelhasei Pfeiff.