Ambrosia artemisiifolia subsp. trinitensis Griseb. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Ambrosia species Ambrosia psilostachya Name Homonyms Ambrosia artemisiifolia var. trinitensis Griseb. Ambrosia artemisiifolia subsp. trinitensis Griseb.