Asperula dubia Willd. ex Roem. & Schult. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Rubiaceae genus Asperula species Asperula arvensis Name Homonyms Asperula dubia Willd. ex Roem. & Schult. Asperula dubia Willd.