Cactus sulphureus Gillies Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Opuntia species Opuntia sulphurea Name Homonyms Cactus sulphureus Gillies ex Loudon Cactus sulphureus Gillies Cactus sulphureus Gillies ex G.Don