Halymenia dichotoma (J.Agardh) J.Agardh, 1876 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Sebdeniales family Sebdeniaceae genus Sebdenia species Sebdenia dichotoma Name Homonyms Halymenia dichotoma (J.Agardh) J.Agardh, 1876 Halymenia dichotoma (J.Agardh) Mont., 1846