| Kingdom | Phylum | Class | Order | Family | Genus |
|---|---|---|---|---|---|
| Chromista | Ochrophyta | Bacillariophyceae | Bacillariales | Bacillariaceae | Fragilariopsis F.Hustedt, 1913 |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| variety | Fragilaria cylindrus var. cylindrus | accepted |
| variety | Fragilaria cylindrus var. mesoleia Cleve-Euler, 1953 | doubtful |
| variety | Fragilariopsis cylindrus var. cylindrus | accepted |
| variety | Fragilariopsis cylindrus var. planctonica Willi Krieger, 1954 | accepted |
| form | Fragilaria cylindrus f. cylindrus | doubtful |
| form | Fragilaria cylindrus f. elongata van Heurck, 1909 | doubtful |
| form | Fragilaria cylindrus f. minor Manguin, 1960 | doubtful |
| form | Fragilariopsis cylindrus f. cylindrus | accepted |
| form | Fragilariopsis cylindrus f. minor Manguin, 1960 | accepted |
Fragilariopsis cylindrus (Grunow) Krieger. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-17.