Hedyotis humifusa Engelm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Rubiaceae genus Houstonia species Houstonia humifusa Name Homonyms Hedyotis humifusa Engelm. ex A.Gray Hedyotis humifusa Engelm.