| Name | Clematis occidentalis (Hornemann) de Candolle |
| Authorship | (Hornemann) de Candolle |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Clematis Linnaeus |
| Contains | Clematis occidentalis var. grosseserrata (Rydberg) J. S. Pringle |
| GUID | urn:lsid:ipni.org:names:1190476-2 |
| Holdings | 193 Specimens held in the Harvard University Herbaria identified as Clematis occidentalis (Hornemann) de Candolle |
| Identification made in | [no date] (190), 2010 (3) |