Halimeda opuntia f. cordata (J.Agardh) E.S.Barton, 1901 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Chlorophyta class Ulvophyceae order Bryopsidales family Halimedaceae genus Halimeda species Halimeda opuntia Name Homonyms Halimeda opuntia f. cordata (J.Agardh) E.S.Barton, 1901 Halimeda opuntia subsp. cordata (J.Agardh) E.S.Barton