Echinocactus spina-christi Zucc. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Melocactus species Melocactus macracanthos Name Homonyms Echinocactus spina-christi Zucc. ex Pfeiff. Echinocactus spina-christi Zucc.