Ceramium diaphanum var. arachnoideum C.Agardh, 1828 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Ceramium species Ceramium tenuicorne Name Homonyms Ceramium diaphanum var. arachnoideum C.Agardh, 1828