Salix alba subsp. australior (Andersson) Poljak. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Salicaceae genus Salix species Salix excelsa Name Homonyms Salix alba var. australior (Andersson) Poljakov Salix alba subsp. australior (Andersson) Poljak.