| Name | Fragilaria fonticola var. tetragona J.Frenguelli |
| Authorship | J. Frenguelli |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Fragilaria fonticola Hustedt |
| Remarks | Created from Taxon Name Import: Fragilaria fonticola var. tetragona J.Frenguelli |
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