| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Sphaeradenia amazonica Harling | W. A. Rodrigues 973 27 Feb 1959 | Brazil. Amazonas. Caatinga do Tarauacá; caatinga baixa. | 02233929 |  | |
| Sphaeradenia amazonica Harling | D. W. Stevenson 730 with D. Daly, P. J. M. Maas, R. F. Ramos & R. P. Lima, 18 Oct 1987 | Brazil. Amazonas. Rio Negro, east bank at ilha Tamandúa (locally Ilha Marajó), near Carapana. | 02233930 |  | |
| Sphaeradenia amazonica Harling | D. W. Stevenson 730 with D. Daly, P. J. M. Maas, R. F. Ramos & R. P. Lima, 18 Oct 1987 | Brazil. Amazonas. Rio Negro, east bank at ilha Tamandúa (locally Ilha Marajó), near Carapana. | 02233932 |  | |
| Sphaeradenia amazonica Harling | G. T. Prance 15870 with P. J. Maas, D. B. Woolcott, D. F. Coêlho, O. P. Monteiro & J. F. Ramos, 31 Oct 1971 | Brazil. Amazonas. Camanaus. | 02233927 |  | |
| Sphaeradenia amazonica Harling | G. T. Prance 15870 with P. J. Maas, D. B. Woolcott, D. F. Coêlho, O. P. Monteiro & J. F. Ramos, 31 Oct 1971 | Brazil. Amazonas. Camanaus. | 02233931 |  | |
| Sphaeradenia amazonica Harling | R. E. Schultes 19675 with I. Cabrera, Nov 1951 | Colombia. Vaupés. Río Vaupés: Circasia. Sandy savannah. Quarzite base. ca. 800 ft. Ca. 0º45'N, 70º30'W. | isotype | 22524 |  |
| Sphaeradenia amazonica Harling | R. E. Schultes 19675 with I. Cabrera, Nov 1951 | Colombia. Vaupés. Río Vaupés: Circasia. Sandy savannah. Quarzite base. ca. 800 ft. Ca. 0º45'N, 70º30'W. | isotype | 22525 |  |
| Sphaeradenia amazonica Harling | R. E. Schultes 9088 with J. M. Pires, 14 Nov 1947 - 15 Nov 1947 | Brazil. Amazonas. Rio Vaupés, between Ipanoré and confluence with Rio Negro. Ipanoré. | 02233928 |  |