| Name | Rhynchospora pusilla var. ferruginescens Kükenthal |
| Authorship | Kükenthal |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhynchospora pusilla (Swartz) Grisebach |
| GUID | urn:lsid:ipni.org:names:220599-2 |
| Citation | 1926 Repert. Spec. Nov. Regni Veg. 23: 207 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhynchospora pusilla var. ferruginescens Kükenthal |
| Identification made in | [no date] (1) |