Thalictrum nudicaule Schwein. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ranunculales family Ranunculaceae genus Thalictrum species Thalictrum clavatum Name Homonyms Thalictrum nudicaule Schwein. ex Torr. & A.Gray Thalictrum nudicaule Schwein.