⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50180977, and has not been changed.
This name is a synonym of Mammillaria polythele subsp. durispina (Boed.) D.R. Hunt.
The record derives from Tropicos which reports it as a synonym (record 50180977) with original publication details: Z. Sukkulentenk. 3: 342 342 1928.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:150885-2.