⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2782178, with some changes.
This name is a synonym of Echinocactus polycephalus Engelm. & J.M.Bigelow.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Monatschr. Kakteenk. 9: 43 1899.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:87634-2.