Porolithon coarctatum (Foslie) Foslie, 1909 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Corallinales family Porolithaceae genus Porolithon species Porolithon gardineri Name Homonyms Porolithon coarctatum (Foslie) Foslie, 1909