Echinocactus leucanthus Zucc. ex Pfeiff. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Thelocactus species Thelocactus leucacanthus Name Homonyms Echinocactus leucanthus Gillies ex Salm-Dyck Echinocactus leucanthus Gillies Echinocactus leucanthus Zucc. Echinocactus leucanthus Zucc. ex Pfeiff.