Lactuca biennis var. integrifolia (A.Gray) Britt. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Lactuca species Lactuca biennis Name Homonyms Lactuca biennis f. integrifolia (Torr. & A.Gray) Fernald Lactuca biennis subsp. integrifolia (A.Gray) Britton