Synedra ulna subsp. ulna Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Fragilariales family Fragilariaceae genus Synedra species Synedra ulna Name Homonyms Synedra ulna var. ulna Synedra ulna f. ulna Synedra ulna subsp. ulna