Echinocactus melanochnus Cels Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Copiapoa species Copiapoa marginata Name Homonyms Echinocactus melanochnus Cels ex Labour. Echinocactus melanochnus Cels