Classification
Biota [regio]Plantae [regnum]
Tracheophyta [phylum]
Magnoliopsida [classis]
Caryophyllales [ordo]
Cactaceae [familia]
Carnegiea [genus]
Genus Carnegiea contains the following taxa:
Carnegiea gigantea (Engelm.) Britton & Rose [species]