Echinocactus maelenii Salm-Dyck 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 maelenii Salm-Dyck ex C.F.Först. Echinocactus maelenii Salm-Dyck