Oldenlandia cristata (Willd. ex Roem. & Schult.) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Rubiaceae genus Exallage species Exallage cristata Name Homonyms Oldenlandia cristata (Willd. ex Roem. & Schult.)