Cactus triacanthus Willd. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Opuntia species Opuntia triacantha Name Homonyms Cactus triacanthus (DC.) Kuntze Cactus triacanthus Willd.