| Name | Juncus effusus subsp. austrocalifornicus Lint |
| Authorship | Lint |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus effusus Linnaeus |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Juncus effusus subsp. austrocalifornicus Lint |
| Identification made in | [no date] (5) |