Mammillaria elegans var. schmollii R.T.Craig, Mammill. Handb.: 283. 1945
Mammillaria elegans var. schmollii, Mammill. Handb.: 283. 1945
is basionym for Mammillaria haageana subsp. schmollii, Mammillaria Postscripts 6: 9. 1997
is basionym for Neomammillaria neoelegans var. schmollii, Cactaceae: 583. 1981
is basionym for Mammillaria haageana var. schmollii in Cact. Succ. J. Gr. Brit. 41: 63. 1979