| Name | Galium serpenticum subsp. okanoganense Dempster & Ehrendorfer |
| Authorship | Dempster & Ehrendorfer |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Galium serpenticum Dempster |
| GUID | urn:lsid:ipni.org:names:107191-2 |
| Citation | 1965 Brittonia 17: 329 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Galium serpenticum subsp. okanoganense Dempster & Ehrendorfer |
| Identification made in | [no date] (5) |
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