| Name | Juncus scirpoides var. compositus R. M. Harper |
| Authorship | R. M. Harper |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus scirpoides Lamarck |
| GUID | urn:lsid:ipni.org:names:132297-2 |
| Citation | 1906 Bull. Torrey Bot. Club 33: 233 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Juncus scirpoides var. compositus R. M. Harper |
| Identification made in | [no date] (1), 2009 (6), 2025 (1) |