| Name | Juncus effusus var. pacificus Fernald & Wiegand |
| Authorship | Fernald & Wiegand |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus effusus Linnaeus |
| GUID | urn:lsid:ipni.org:names:132123-2 |
| Citation | 1910 Rhodora 12: 89 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Juncus effusus var. pacificus Fernald & Wiegand |
| Identification made in | [no date] (13) |