⚠ Version 1 of The Plant List has been superseded.

This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Melocactus margaritaceus in version 1.1 of The Plant List.

Melocactus margaritaceus var. disciformis Rizzini is a synonym of Melocactus violaceus subsp. margaritaceus N.P. Taylor

This name is a synonym of Melocactus violaceus subsp. margaritaceus N.P. Taylor.

The record derives from Tropicos which reports it as a synonym (record 5107964) with original publication details: Melocactus Bras. 78 78 1972.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:917097-1.