Alnus glutinosa var. imperialis (G.Kirchn.) Desf. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Alnus species Alnus glutinosa Name Homonyms Alnus glutinosa f. imperialis Dippel Alnus glutinosa var. imperialis G.Kirchn. Alnus glutinosa var. imperialis (G.Kirchn.) Desf. ex Rehder Alnus glutinosa var. imperialis (G.Kirchn.) Desf.