⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5100361, and has not been changed.

Mammillaria grahamii var. oliviae (Orcutt) L.D. Benson 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 5100361) 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:151037-2.