⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50198448, with some changes.
This name is a synonym of Mammillaria barbata Engelm..
The record derives from Tropicos which reports it as a synonym (record 50198448) with original publication details: Repert. Pl. Succ. 43: 15 15 1992.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:2976940-1.