⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2781900, with some changes.

Echinocactus horizonthalonius var. curvispinus Salm-Dyck is a synonym of Echinocactus horizonthalonius Lem.

This name is a synonym of Echinocactus horizonthalonius Lem..

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Cact. Hort. Dyck. ed. 2: 146 1850.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:87439-2.