Polysiphonia filamentosa (Wulfen) Sprengel, 1827 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Spyridiaceae genus Spyridia species Spyridia filamentosa Name Homonyms Polysiphonia filamentosa (Wulfen) Sprengel, 1827