| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Polygala scleroxylon Ducke | W. A. Ducke 29038 26 Jun 1936 | Brazil. Amazonas. Inter flumen Madeira et lacum Parairo (civit. Amazonas). | isotype | 435745 |  |
| Polygala scleroxylon Ducke | W. A. Ducke 315 26 Jun 1936 | Brazil. Amazonas. Humaytá, inter flumen Madeira et lacum Paraisao. | isotype | 76950 |  |
| Polygala scleroxylon Ducke | W. A. Ducke s.n. [=herb. RB 29038] 26 Jun 1936 | Brazil. Amazonas. Humaitá Mun. Rio Madeira, entre o rio e o Lago Paraíso. | isotype | 1731871 |  |