Streptotheca Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Lithodesmiales family Lithodesmiaceae genus Heliotheca Name Homonyms Streptotheca Streptotheca Vuillemin, 1887 Streptotheca W.H.Shrubsole, 1890 Streptotheca