| Name | Ptilimnium costatum Rafinesque |
| Authorship | Rafinesque |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Ptilimnium |
| GUID | urn:lsid:ipni.org:names:847647-1 |
| Citation | 1825 Neogenyton 2 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Ptilimnium costatum Rafinesque |
| Identification made in | 1947 (1), 1956 (2) |
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