| Name | Euastrum crassum f. isthmi -karelici E.K.Kossinskaja |
| Authorship | -karelici E.K.Kossinskaja |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Euastrum crassum Ralfs |
| Remarks | Created from Taxon Name Import: Euastrum crassum f. isthmi -karelici E.K.Kossinskaja |