Chaetoceras echionotum (J.Agardh) Kütz. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Ceramium species Ceramium echionotum Name Homonyms Chaetoceras echionotum (J.Agardh) Kütz.