Elodea oblongifolia Michx. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Hydrocharitaceae genus Elodea species Elodea canadensis Name Homonyms Elodea oblongifolia Michx. ex Casp. Elodea oblongifolia Michx.