Mammillaria nejapensis f. longispina (R.T.Craig & E.Y.Dawson) Krainz, Kakteen 18: C VIIIc. 1961
Mammillaria nejapensis f. longispina, Kakteen 18: C VIIIc. 1961
is new combination for Mammillaria nejapensis var. longispina in Allan Hancock Found. Publ. Occas. Pap. 2: 58. 1948