Achnanthidium flexellum var. flexellum Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Cymbellales family Cymbellaceae genus Cymbella species Cymbella flexella Name Homonyms Achnanthidium flexellum f. flexellum Achnanthidium flexellum var. flexellum