Vallisneria physkium Juss. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Hydrocharitaceae genus Vallisneria species Vallisneria natans Name Homonyms Vallisneria physkium Juss. ex Spreng. Vallisneria physkium Juss.