Melocactus depressus Hook. in Bot. Mag. 65: t. 3691. 1838
Melocactus depressus in Bot. Mag. 65: t. 3691. 1838
is basionym for Melocactus melocactoides f. depressus, Melocactus Bras.: 82, 84. 1982
is basionym for Melocactus melocactoides var. depressus, Melocactus Bras.: 82. 1982
is basionym for Cactus depressus, Cacti, ed. 1: 279. 1937