difference between Mammillaria saxicola and magnimamma

[arturo conan]

I have seen that each one says one thing.
I'm going to clarify your ideas.
They are DIFFERENT SPECIES. None is a form, ssp. or variety of the other.
Taking advantage of the fact that I have the 2 in the same pot, I will tell you which one is.
the one below, which is darker, is SAXICOLA and the one above, lighter is MAGNIMAMMA.
I HOPE THERE ARE NO MORE DOUBTS.
a greeting.

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