⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2782322, and has not been changed.
This name is a synonym of Acanthocalycium spiniflorum (K.Schum.) Backeb..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Gesamtbeschr. Kakt. Nachtr. 1: 88 1903.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:87741-2.