Copiapoa cuprea Copiapoa cupreata Copiapoa dura Hildmannia cupreata Copiapoa griseoviolacea Neoporteria tuberisulcata var. cupreata Copiapoa bridgesii Copiapoa echinoides var. cuprea Copiapoa marginata var. bridgesii Echinocactus bridgesii Echinocactus cupreatus Echinocactus echinoides Echinocactus salm-dyckianus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024