⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5100031, with some changes.

Mammillaria gummifera var. applanata (Engelm.) L.D. Benson 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 5100031) with original publication details: Cacti Arizona (ed. 3) 22 22 1969.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:1041975-2.