Neomammillaria missouriensis (Sweet) Britton & Rose ex Rydb., Fl. Plains N. Amer.: 561. 1932
Neomammillaria missouriensis, Fl. Plains N. Amer.: 561. 1932
is new combination for Mammillaria missouriensis, Hort. Brit.: 171. 1826
Neomammillaria missouriensis, Fl. Plains N. Amer.: 561. 1932