Mammillaria haageana subsp. schmollii (R.T.Craig) D.R.Hunt, Mammillaria Postscripts 6: 9. 1997
Mammillaria haageana subsp. schmollii, Mammillaria Postscripts 6: 9. 1997
is new combination for Mammillaria elegans var. schmollii, Mammill. Handb.: 283. 1945