Echinocactus californicus hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Echinocactus species Echinocactus californicus Name Homonyms Echinocactus californicus hort. ex C.F.Först. Echinocactus californicus Monv. Echinocactus californicus Monv. ex Labour. Echinocactus californicus hort.