Cirsium acaule var. caulescens DC. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Cirsium species Cirsium acaulon Name Homonyms Cirsium acaule var. caulescens DC. Cirsium acaule var. caulescens Tamamsch. Cirsium acaule var. caulescens (Boenn.) Lej.