| Name | Fragilaria istvanffyi var. tenuirostris O.Müller |
| Authorship | O. Müller-1 |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Fragilaria istvanffyi Pantocsek |
| Remarks | Created from Taxon Name Import: Fragilaria istvanffyi var. tenuirostris O.Müller |
| Name | Fragilaria istvanffyi var. tenuirostris O.Müller |
| Authorship | O. Müller-1 |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Fragilaria istvanffyi Pantocsek |
| Remarks | Created from Taxon Name Import: Fragilaria istvanffyi var. tenuirostris O.Müller |