Cirsium canescens Lam. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Picnomon species Picnomon acarna Name Homonyms Cirsium canescens Nutt. Cirsium canescens Lam. Cirsium canescens A.Gray, 1849