Knautia arvensis var. polymorpha (F.W.Schmidt) Szabó Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Dipsacales family Caprifoliaceae genus Knautia species Knautia arvensis Name Homonyms Knautia arvensis subsp. polymorpha (Szabó) O.Schwarz Knautia arvensis var. polymorpha (F.W.Schmidt) Szabó