⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50125791, and has not been changed.

Mammillaria mercadensis var. guillauminiana (Backeb.) Repp. is a synonym of Mammillaria guillauminiana Backeb.

This name is a synonym of Mammillaria guillauminiana Backeb..

The record derives from Tropicos which reports it as a synonym (record 50125791) with original publication details: Gattung Mammillaria 35 35 1989.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:955925-1.