Ceramium violaceum var. tenue Roth, 1806 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Leptosiphonia species Leptosiphonia fibrillosa Name Homonyms Ceramium violaceum var. tenue Roth, 1806