Mammillaria duoformis var. typica R.T.Craig & E.Y.Dawson in Allan Hancock Found. Publ. Occas. Pap. 2: 59. 1948

Mammillaria duoformis var. typica R.T.Craig & E.Y.Dawson in Allan Hancock Found. Publ. Occas. Pap. 2: 59. 1948

Mammillaria duoformis var. typica R.T.Craig & E.Y.Dawson in Allan Hancock Found. Publ. Occas. Pap. 2: 59. 1948

Taxon for this name

Mammillaria duoformis var. typica R.T.Craig & E.Y.Dawson