⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50203929, and has not been changed.

Mammillaria tetracentra hort. ex Salm-Dyck is a synonym of Mammillaria sempervivi DC.

This name is a synonym of Mammillaria sempervivi DC..

The record derives from Tropicos which reports it as a synonym (record 50203929) with original publication details: Cact. Hort. Dyck. [ed. 1849] 1849: 112 112 1850.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:135210-1.