Alnus undulata hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Alnus species Alnus serrulata Name Homonyms Alnus undulata Willd. Alnus undulata hort. ex H.J.P.Winkl. Alnus undulata hort.