Mammillaria pusilla var. major Pfeiff., Enum. Diagn. Cact.: 36. 1837 Mammillaria pusilla var. major Pfeiff., Enum. Diagn. Cact.: 36. 1837is basionym for Mammillaria pusilla f. major (Pfeiff.) Schelle, Handb. Kakteenkult.: 249. 1907Taxon for this nameMammillaria pusilla var. major Pfeiff.