Suleyman Demir notes:
Syn.Mammillaria cornifera, M.radians, Aulacothele cornifera, Coryphantha radians,
C.radians v.pectinoides, C.cornuta, C.schwarziana, C.maliterrarum, C.bernalensis.
C.cornifera forma maliterrarum is a relatively large-tubercled form with strong centrals, but at its locations also finer-spined plants with 0-4 centrals occur, (R.F.Dicht & A.D.Luthy, Coryphanyha, 2005).
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