Mammillaria nejapensis R.T.Craig & E.Y.Dawson in Allan Hancock Found. Publ. Occas. Pap. 2: 57. 1948
Mammillaria nejapensis in Allan Hancock Found. Publ. Occas. Pap. 2: 57. 1948
is basionym for Mammillaria karwinskiana subsp. nejapensis, Mammillaria Postscripts 6: 1. 1997
is basionym for Neomammillaria nejapensis, Cactaceae: 618. 1981