| Name | Cosmarium polygonum var. hexagonum Grönblad |
| Authorship | Grönblad (do not use) |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium polygonum (Nägeli) W. Archer |
| Remarks | Created from Taxon Name Import: Cosmarium polygonum var. hexagonum Grönblad |
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