| Name | Closterium pronum f. sigmoidea N.N.Woronichin, |
| Authorship | N. N. Woronichin |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Closterium pronum Brébisson |
| Remarks | Created from Taxon Name Import: Closterium pronum f. sigmoidea N.N.Woronichin, |
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