| Name | Didymium cinereum Fries |
| Authorship | Fries |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Didymium |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Didymium cinereum Fries |
| Identification made in | [no date] (5), 1893 (1) |
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