| Name | Scirpus validus f. megastachyus Fernald | 
| Authorship | Fernald | 
| Rank | Forma | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Scirpus validus Vahl | 
| GUID | urn:lsid:ipni.org:names:291219-2 | 
| Citation | 1943 Rhodora 45: 283 | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Scirpus validus f. megastachyus Fernald | 
| Identification made in | [no date] (1), 1967 (1) |