Lactuca procera Schrad. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Lactuca species Lactuca canadensis Name Homonyms Lactuca procera Schrad. ex Colla, 1834 Lactuca procera Schrad. ex DC. Lactuca procera Schrad.