Alnus rugosa hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Alnus species Alnus incana Name Homonyms Alnus rugosa (Du Roi) Spreng. Alnus rugosa hort. ex Regel, 1868 Alnus rugosa hort. Alnus rugosa Koch, 1872 Alnus rugosa Lesquereux, 1888