| Name | Juncus subcaudatus var. planisepalus Fernald |
| Authorship | Fernald |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus subcaudatus (Engelmann) Coville & S. F. Blake |
| GUID | urn:lsid:ipni.org:names:132316-2 |
| Citation | 1921 Rhodora 23: 241 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Juncus subcaudatus var. planisepalus Fernald |
| Identification made in | [no date] (2) |