Ulmus humilis Amman ex Steud. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Ulmaceae genus Ulmus species Ulmus pumila Name Homonyms Ulmus humilis Amman ex Steud. Ulmus humilis J.G.Gmel. Ulmus humilis Amman