Polysiphonia tongatensis Harv. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Neosiphonia species Neosiphonia tongatensis Name Homonyms Polysiphonia tongatensis Harv. ex Kütz. Polysiphonia tongatensis Harv.