| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Rhynchospora arechavaletae Boeckeler | R. Reitz 1010 with Klein, 24 Sep 1953 | Brazil. Santa Catarina. Campo do Massiambú, Palhoça. | 612849 |  | |
| Rhynchospora arechavaletae Boeckeler | R. Reitz 1373 with Klein, 04 Nov 1953 | Brazil. Santa Catarina. Campo do Massiambú, Palhoça. | 612850 |  | |
| Rhynchospora arechavaletae Boeckeler | B. J. Pickel 860 20 Oct 1931 | Brazil. Pernambuco. Tapera. | 612851 |  |