Abstract
As part of the ongoing study on Brazilian Cacti (see e.g., Guiggi 2020a, 2020b), we here present a note about two taxa belonging to the genus Melocactus Link & Otto (1827: 417), i.e. Melocactus pachycephalus N.P.Taylor (in Taylor & Zappi 2020: 256) and M. alex-bragae P.J.Braun & Esteves (2008: 252).