This name is a synonym of Melocactus matanzanus León.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5107993) with original publication details: Ciencias (Habana) 9: 3 1976.
This name was in version 1 of The Plant List, record tro-5107993, and has not been changed.