Ceramium proliferum f. secundatum (Lyngb.) H.E.Petersen Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Ceramium species Ceramium secundatum Name Homonyms Ceramium proliferum f. secundatum (Lyngb.) H.E.Petersen