Mammillaria karwinskiana subsp. nejapensis (R.T. Craig & E.Y. Dawson) D.R. Hunt, Mammillaria Postscripts 6: 11. 1997 sec. Hunt 2016
- ≡Mammillaria nejapensis R.T. Craig & E.Y. Dawson, Allan Hancock Found. Publ. Occas. Pap. 1-2: 57. 1948 syn. sec. Guzmán & al. 2003