Callithamnion imbricatum Schousboe Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Antithamnion species Antithamnion cruciatum Name Homonyms Callithamnion imbricatum Schousboe ex Suhr Callithamnion imbricatum Schousboe