Udora verticillata var. minor Engelm. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Hydrocharitaceae genus Elodea species Elodea nuttallii Name Homonyms Udora verticillata var. minor Engelm. ex Casp. Udora verticillata var. minor Engelm.