Gymnosorus nigrescens (Sonder) J.Agardh, 1894 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Dictyotales family Dictyotaceae genus Lobophora species Lobophora variegata Name Homonyms Gymnosorus nigrescens (Sonder) J.Agardh, 1894