| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Sphaeradenia duidae Harling | M. L. Kawasaki 202 with H. C. de Lima, D. W. Stevenson, J. Ramos, G. Mueller, R. P. de Lima, J. G. de Oliveira & A. M. M. Neto, 18 Nov 1987 | Brazil. Amazonas. Rio Uaupés, local chamado Ipanoré, uma hora de motor de popa acima de Taraquá. Caminho para Cova do Diabo. | 02398912 |  | |
| Sphaeradenia duidae Harling | G. T. Prance 29206 with I. L. do Amaral, J. J. Pipoly, A. S. Tavares, M. G. da Silva, C. D. A. da Mota & A. Cress, 21 Feb 1984 | Brazil. Amazonas. Plateau northern massif of Serra Aracá. North Part of North Slope. | 02398911 |  | |
| Sphaeradenia duidae Harling | W. W. Thomas 3045 with T. Plowman, 13 Apr 1984 - 15 Apr 1984 | Venezuela. Amazonas. Río Negro Mun. Vicinity of camp VI, on a ridge on Venezuelan-Brazilian border, 3.5 km W of Pico Zuloaga. | 02398903 |  | |
| Sphaeradenia duidae Harling | J. A. Steyermark 103968 16 Oct 1970 - 17 Oct 1970 | Venezuelan-Brazilian Frontier. Headwaters of Cañon Grande, southeastern portion. | 02398901 |  | |
| Sphaeradenia duidae Harling | J. A. Steyermark 103968 16 Oct 1970 - 17 Oct 1970 | Venezuelan-Brazilian Frontier. Headwaters of Cañon Grande, southeastern portion. | 02398902 |  | |
| Sphaeradenia duidae Harling | G. H. H. Tate 697 Aug 1926-Apr 1929 | Venezuela. Amazonas. Summit of Mount Duida. | holotype | 38534 |  |
| Sphaeradenia duidae Harling | I. L. do Amaral 1650 with G. T. Prance, W. A. Rodrigues, J. J. Pipoly, A. S. Tavaes, G. J. Samuels, J. M. de S. Miralha, A. Cress. L. A. Cisneros, M. G. da Silva, C. da S. Rosário, C. D. A. da Mota & J. C. de Oliveira, 22 Feb 1984 | Brazil. Amazonas. Barcelos Mun. Plato da Serra Araca, pico em cima da Serra Norte. | 02233855 |  |