| Name | Closterium rostratum f. longior S.P.Petkoff, |
| Authorship | S.P.Petkoff |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium rostratum Ehrenberg ex Ralfs |
| Remarks | Created from Taxon Name Import: Closterium rostratum f. longior S.P.Petkoff, |
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