| Name | Fimbristylis puberula f. pycnostachys Fernald |
| Authorship | Fernald |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Fimbristylis puberula (Michaux) Vahl |
| Citation | 1935 Rhodora 37: 396 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Fimbristylis puberula f. pycnostachys Fernald |
| Identification made in | [no date] (1) |