Ruppia maritima subsp. subcapitata Fernald & Wiegand Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Ruppiaceae genus Ruppia species Ruppia maritima Name Homonyms Ruppia maritima var. subcapitata Fernald & Wiegand Ruppia maritima subsp. subcapitata Fernald & Wiegand