| Name | Porpidia crustulata (Acharius) Hertel & Knoph |
| Authorship | (Acharius) Hertel & Knoph |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Porpidia Körber |
| GUID | urn:lsid:indexfungorum.org:names:107567 |
| Citation | 1984 Beih. Nova Hedwigia 79: 435 |
| Holdings | 59 Specimens held in the Harvard University Herbaria identified as Porpidia crustulata (Acharius) Hertel & Knoph |
| Identification made in | [no date] (47), 1994 (1), 1997 (1), 1998 (1), 2001 (1), 2009 (1), 2013 (2), 2016 (2), 2019 (2), 2022 (1) |
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