| Name | Cosmarium margaritatum var. quadrum Willi Krieger |
| Authorship | Willi Krieger |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium margaritatum (P.Lundell) J.Roy & Bisset |
| Remarks | Created from Taxon Name Import: Cosmarium margaritatum var. quadrum Willi Krieger |
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