Polysiphonia insidiosa Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Polysiphonia species Polysiphonia insidiosa Name Homonyms Polysiphonia insidiosa (J.Agardh) P.L.Crouan & H.M.Crouan