⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2772819, and has not been changed.
This name is a synonym of Discocactus heptacanthus subsp. magnimammus .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Kakteen And. Sukk. 25: 217 1974.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:275970-2
.