Salix viminalis subsp. semiviminalis (E.L.Wolf) Poljak. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Salicaceae genus Salix species Salix smithiana Name Homonyms Salix viminalis var. semiviminalis Poljakov Salix viminalis subsp. semiviminalis (E.L.Wolf) Poljak.