⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50203995, and has not been changed.
This name is a synonym of Gymnocalycium reductum (Link) Pfeiff. & Otto.
The record derives from Tropicos which reports it as a synonym (record 50203995) with original publication details: Enum. Hort. Berol. Alt. 2: 21 21 1822.