Polysiphonia elongata var. denudata Harvey Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Vertebrata species Vertebrata spec Name Homonyms Polysiphonia elongata var. denudata (C.Agardh) Zanardini, 1841 Polysiphonia elongata f. denudata (C.Agardh) Batters, 1890 Polysiphonia elongata var. denudata Harvey