Diatoma vulgaris f. producta (Grunow) A.Kurz, 1922 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Fragilariales family Fragilariaceae genus Diatoma species Diatoma vulgaris Name Homonyms Diatoma vulgaris var. producta Grunow, 1862 Diatoma vulgaris f. producta (Grunow) A.Kurz, 1922