⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2783440, with some changes.
This name is a synonym of Echinopsis thionantha subsp. glauca (F.Ritter) M.Lowry.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: I.O.S. Bull. 3: 95 1974.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:132674-1.