Grindelia arguta Schrad. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Grindelia species Grindelia squarrosa Name Homonyms Grindelia arguta Schrad. ex DC. Grindelia arguta A.Gray Grindelia arguta Schrad. Grindelia arguta Schrad. ex DC.