| Name | Ditylum brightwellii f. pentagonum Gaarder |
| Authorship | Gaarder |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Ditylum brightwellii (T. West) Grunow |
| Remarks | Created from Taxon Name Import: Ditylum brightwellii f. pentagonum Gaarder |
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