| Name | Fragilaria undata f. tetranodis A. Cleve |
| Authorship | A. Cleve |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Fragilaria undata W.Smith |
| Remarks | Created from Taxon Name Import: Fragilaria undata f. tetranodis A. Cleve |
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