| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Ischnosiphon ursinus L.Andersson | A. S. L. da Silva 638 13 Jul 1980 | Brazil. Amazonas. Carauarí, cerca de 3 Km norte da cidade. Mata de vázea, solo arenoso. | 1292273 |  | |
| Ischnosiphon ursinus L.Andersson | T. C. Plowman 13662 with William W Thomas, 18 Apr 1984 | Venezuela. Amazonas. Río Negro Mun. Environs of Neblina Base Camp along Río Baria (Río Mawarinuma). | 1292274 |  | |
| Ischnosiphon ursinus L.Andersson | M. T. Madison 6500 with H. A. Kennedy, O. Monteiro & P. I. S. Braga, 20 Oct 1978 | Brazil. Amazonas. Rio Negro, San Gabriel airport. | isotype | 320394 |  |