Erigeron angulosus subsp. debilis (A.Gray) Piper Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Erigeron species Erigeron nivalis Name Homonyms Erigeron angulosus subsp. debilis (A.Gray) Piper