| Name | Canthium longistylum Merrill |
| Authorship | Merrill |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Canthium |
| GUID | urn:lsid:ipni.org:names:745507-1 |
| Citation | 1938 Pap. Michigan Acad. Sci. 23: 195 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Canthium longistylum Merrill |
| Identification made in | [no date] (1) |