| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Psittacanthus lasianthus Sandwith | N. Y. Sandwith 1366 05 Sep 1937 | Guyana. Kaiteur Savannah. | isotype | 285233 |  |
| Psittacanthus lasianthus Sandwith | F. A. Michelangeli 2569 28 Mar 2014 | Guyana. Potaro-Siparuni. Kaieteur National Park, upper Mure Mure basin, savanna on trail to Menzies landing. | 02499332 |  |