Viola ×dubia Fouill., 1886 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Violaceae genus Viola species Viola mixta Name Homonyms Viola dubia E.H.L.Krause Viola dubia Wall. Viola ×dubia Wiesb. Viola ×dubia Fouill., 1886