Brittonia davisiae C.A.Armstr. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Ferocactus species Ferocactus haematacanthus Name Homonyms Brittonia davisiae Houghton Brittonia davisiae C.A.Armstr.