Polysiphonia fibrillosa Greville Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Polysiphonia species Polysiphonia fibrillosa Name Homonyms Polysiphonia fibrillosa (Dillwyn) Sprengel Polysiphonia fibrillosa Greville