⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5105731, and has not been changed.

Ariocarpus macdowellii W.T. Marshall is a synonym of Ariocarpus kotschoubeyanus (Lem.) K.Schum.

The record derives from Tropicos which reports it as a synonym (record 5105731) with original publication details: Cactaceae (Berlin) 135 135 1941.