Viola tracheliifolia subsp. populifolia Skottsb. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Violaceae genus Viola species Viola tracheliifolia Name Homonyms Viola tracheliifolia var. populifolia Skottsb. Viola tracheliifolia f. populifolia (Skottsb.) H.St.John Viola tracheliifolia subsp. populifolia Skottsb.