Isoetes lacustris var. tenuifolia A.Braun Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Lycopodiopsida order Isoetales family Isoetaceae genus Isoetes species Isoetes lacustris Name Homonyms Isoetes lacustris var. tenuifolia A.Braun ex Milde Isoetes lacustris var. tenuifolia A.Braun