⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5108409, with some changes.

Mammillaria applanata Engelm. is a synonym of Mammillaria heyderi subsp. hemisphaerica (Engelm.) D.R. Hunt

This name is a synonym of Mammillaria heyderi subsp. hemisphaerica (Engelm.) D.R. Hunt.

The record derives from Tropicos which reports it as a synonym (record 5108409) with original publication details: Mem. Tour N. Mexico 105 105 1848.