| Name | Sisyrinchium quadrangulatum Klatt |
| Authorship | Klatt |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Sisyrinchium Linnaeus |
| GUID | urn:lsid:ipni.org:names:441249-1 |
| Citation | 1863 Linnaea 32: 284 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Sisyrinchium quadrangulatum Klatt |
| Identification made in | [no date] (2), 1988 (1) |