Callithamnion elegans Schousb. ex C.Agardh Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Gymnothamnion species Gymnothamnion elegans Name Homonyms Callithamnion elegans Schousb. ex C.Agardh Callithamnion elegans Schousb.