Lithothamnion hamelii Me.Lemoine, 1931 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Corallinales family Hapalidiaceae genus Phymatolithon species Phymatolithon calcareum Name Homonyms Lithothamnion hamelii Me.Lemoine, 1931