| Name | Fragilaria crotonensis var. subprolongata Schroet.& Vogl. |
| Authorship | Schroet. & Vogl. |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Fragilaria crotonensis Kitton |
| Remarks | Created from Taxon Name Import: Fragilaria crotonensis var. subprolongata Schroet.& Vogl. |