Pistia stratiotes subsp. spathulata (Michx.) Engl. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Araceae genus Pistia species Pistia stratiotes Name Homonyms Pistia stratiotes var. spathulata (Michx.) Engl. Pistia stratiotes subsp. spathulata (Michx.) Engl.