⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-5102571, with some changes.

Melocactus obtusipetalus Lem. is a synonym of Melocactus curvispinus Pfeiff.

The record derives from Tropicos which reports it as a synonym (record 5102571) with original publication details: Cact. Aliq. Nov. 11 11 1838.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:156869-2.