), "Hickenia" Britton & Rose, "Malacocarpus" Salm-Dyck, "Microspermia" Fric, "Neohickenia" Fric, "Notocactus" (K.Schum.
), "Hickenia" Britton & Rose, "Malacocarpus" Salm-Dyck, "Microspermia" Fric, "Neohickenia" Fric, "Notocactus" (K.Schum.