Carduus cernuus (L.) Patrin Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Alfredia species Alfredia cernua Name Homonyms Carduus cernuus Steud., 1821 Carduus cernuus Bertol. Carduus cernuus (L.) Patrin ex Ledeb. Carduus cernuus (L.) Patrin Carduus cernuus L. Carduus cernuus (L.) Raeusch.