| Name | Scirpus robustus f. protrusus Fernald |
| Authorship | Fernald |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Scirpus robustus Pursh |
| GUID | urn:lsid:ipni.org:names:230518-2 |
| Citation | 1943 Rhodora 45: 392 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Scirpus robustus f. protrusus Fernald |
| Identification made in | [no date] (1) |
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