Carduus nigrescens Mutel Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Carduus species Carduus vivariensis Name Homonyms Carduus nigrescens Mutel ex Nyman, 1879 Carduus nigrescens Vill. Carduus nigrescens Mutel