| Name | Rhynchospora tenuis subsp. austro-brasiliensis T. Koyama |
| Authorship | T. Koyama |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhynchospora tenuis Link |
| GUID | urn:lsid:ipni.org:names:220693-2 |
| Citation | 1972 Mem. New York Bot. Gard. 23: 78 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhynchospora tenuis subsp. austro-brasiliensis T. Koyama |
| Identification made in | [no date] (1) |