Lemna trisulca subsp. pygmaea Henn. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Araceae genus Lemna species Lemna trisulca Name Homonyms Lemna trisulca var. pygmaea Henn. Lemna trisulca subsp. pygmaea Henn.