Neomammillaria pygmaea Britton & Rose, Cactaceae 4: 142–143. 1923
Neomammillaria pygmaea, Cactaceae 4: 142–143. 1923
is basionym for Ebnerella pygmaea in Oesterr. Bot. Z. 98: 90. 1951
is basionym for Mammillaria pygmaea, Kakteen: 296. 1929
is basionym for Chilita pygmaea in Sukkulentenkunde 5: 21. 1954