⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50145595, and has not been changed.
This name is a synonym of Mammillaria petrophila subsp. baxteriana .
The record derives from Tropicos which reports it as a synonym (record 50145595
) with original publication details: Cactus & Succ. Jour. 6: 3, f. 3 1934.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:168669-2
.