| Name | Closterium directum f. gracilior R.Gutwinski |
| Authorship | R.Gutwinski |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium directum W. Archer |
| Remarks | Created from Taxon Name Import: Closterium directum f. gracilior R.Gutwinski |
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