Salix discolor var. rigidior (Andersson) C.K.Schneid. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Malpighiales family Salicaceae genus Salix species Salix discolor Name Homonyms Salix discolor var. rigidior (Andersson) C.K.Schneid. Salix discolor f. rigidior (Andersson) C.K.Schneid. Salix discolor subsp. rigidior Andersson Salix discolor subsp. rigidior (Andersson) C.K.Schneid.