This name is a synonym of Mammillaria schumannii Hildm..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50126584) with original publication details: Zoë 5: 8 1900.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:151833-2.
This name was in version 1 of The Plant List, record tro-50126584, and has not been changed.