Marsilea diffusa subsp. approximata A.Braun Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Salviniales family Marsileaceae genus Marsilea species Marsilea minuta Name Homonyms Marsilea diffusa var. approximata A.Braun Marsilea diffusa subsp. approximata A.Braun