⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2781766, and has not been changed.
This name is a synonym of Ferocactus emoryi subsp. rectispinus (Engelm.) N.P.Taylor.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Handb. Kakteenkult. 161 1907.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:87335-2.