? expansum Philippi Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Corallinales family Hapalidiaceae genus Mesophyllum species Mesophyllum expansum Name Homonyms ? expansum C.Presl ? expansum Seilacher, 1962 ? expansum Collignon, 1950 ? expansum Blake, 1882 ? expansum Fontaine, 1890