Mammillaria mathildae Kraehenb. & Krainz in Kakteen And. Sukk. 24: 265. 1973 sec. Hunt 2016
- =Mammillaria fittkaui subsp. mathildae (Kraehenb. & Krainz) A. Lüthy, Taxon. Untersuch. Gattung Mammillaria: 162. 1995 syn. sec. Guzmán & al. 2003
- =Escobariopsis fittkaui subsp. mathildae (Kraehenb. & Krainz) Doweld in Sukkulenty 3: 40. 2000 syn. sec. Guzmán & al. 2003