Melocactus curvispinus Pfeiff., Enum. Diagn. Cact.: 46. 1837
Melocactus curvispinus, Enum. Diagn. Cact.: 46. 1837
Neotype (designated by Taylor, N. P. 1991: 711): Mexico, Veracruz, cerca de Laguna Verde, selva baja saxicola, 28 Jul 1986, Taylor & Guzmán 365 (MEXU: MEXU 00474886)
Melocactus curvispinus, Enum. Diagn. Cact.: 46. 1837