Rhoicosigma curvatum Grunow Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Pleurosigmataceae genus Rhoicosigma species Rhoicosigma curvatum Name Homonyms Rhoicosigma curvatum Grunow Rhoicosigma curvatum Grunow ex H.Peragallo, 1891