Marsilea quadrifolia f. aquatica A.Braun Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Salviniales family Marsileaceae genus Marsilea species Marsilea quadrifolia Name Homonyms Marsilea quadrifolia f. aquatica A.Braun ex Glück Marsilea quadrifolia f. aquatica A.Braun