Urospora wormskioldii f. vancouveriana Tilden, 1900 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Chlorophyta class Ulvophyceae order Ulotrichales family Ulotrichaceae genus Urospora species Urospora wormskioldii Name Homonyms Urospora wormskioldii f. vancouveriana Tilden, 1900