Ulmus hollandica Du Roi Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Harbk. Baumz. ii. 505. Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Ulmaceae genus Ulmus species Ulmus hollandica Name Homonyms Ulmus ×hollandica Mill. Ulmus hollandica Du Roi