⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-5107961, and has not been changed.
This name is a synonym of Melocactus violaceus subsp. ritteri .
The record derives from Tropicos which reports it as a synonym (record 5107961
) with original publication details: Kakteen Südamer. 1: 133 133 1979.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:156848-2
.