Tithymalus cornutus Schweinf. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Euphorbiaceae genus Euphorbia species Euphorbia retusa Name Homonyms Tithymalus cornutus Schweinf. ex Asch. Tithymalus cornutus Schweinf.