⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5100370, and has not been changed.

Mammillaria microcarpa Engelm. is a synonym of Mammillaria grahamii Engelm.

This name is a synonym of Mammillaria grahamii Engelm..

The record derives from Tropicos which reports it as a synonym (record 5100370) with original publication details: Not. Milit. Reconn. 157 157 1848.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:151266-2.