Galaxaura umbellata (Esper) J.V.Lamour. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Nemaliales family Galaxauraceae genus Dichotomaria species Dichotomaria obtusata Name Homonyms Galaxaura umbellata (Esper) J.V.Lamour.