| Name | Petrospongium rugosum (Okamura) Setchell & N. L. Gardner |
| Authorship | (Okamura) Setchell & N. L. Gardner |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Petrospongium Nägeli ex Kützing |
| Remarks | Created from Taxon Name Import: Petrospongium rugosum (Okamura) Setchell & N. L. Gardner |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Petrospongium rugosum (Okamura) Setchell & N. L. Gardner |
| Identification made in | [no date] (2) |