Erigeron engelmannii subsp. davisiae Cronquist Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Erigeron species Erigeron davisii Name Homonyms Erigeron engelmannii var. davisiae (Cronquist) Cronquist Erigeron engelmannii subsp. davisiae Cronquist