Ceramium strictum Roth, 1806 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Polysiphonia species Polysiphonia stricta Name Homonyms Ceramium strictum Harvey Ceramium strictum Roth, 1806 Ceramium strictum (Kütz.) Rabenh., 1847 Ceramium strictum Kutzing