| Name | Closterium angustatum var. gracile Kossinskaja |
| Authorship | Kossinskaja |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium angustatum Kützing ex Ralfs |
| Remarks | Created from Taxon Name Import: Closterium angustatum var. gracile Kossinskaja |