| Name | Cosmarium subtumidum var. groenbladii Croasdale |
| Authorship | Croasdale |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium subtumidum Nordstedt |
| Remarks | Created from Taxon Name Import: Cosmarium subtumidum var. groenbladii Croasdale |
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