Ulmus glabra var. crispa Loudon Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Ulmaceae genus Ulmus species Ulmus glabra Name Homonyms Ulmus glabra var. crispa Loudon Ulmus glabra f. crispa (Willd.) Rehder