| Heteropsis melinonii (Engl.) A.M.E.Jonker & Jonker | B. Hoffman 5069 | Guyana. Potaro-Siparuni. Iwokrama. Essequibo River, floodplain betw. Kurupukari & Apoteri villages, near Ladysmith tributary. | | 03780768 |  |
| Heteropsis melinonii (Engl.) A.M.E.Jonker & Jonker | K. M. Redden 2933 | Guyana. Cuyuni-Mazaruni. Pakaraima Mts. Mazaruni River, just above ABC Falls. Trail/track 2.03 miles SW of Base Camp 6 heading E to mining camp site. | | 3780796 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | B. Hoffman 3901 | Guyana. Upper Demerara-Berbice. Berbice River, 230 km upriver from mouth, N of Kwakwani; Aroiama Mining Co. land concession. | | 3780707 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | B. Hoffman 5070 | Guyana. Potaro-Siparuni. Iwokrama. Essequibo River, floodplain betw. Kurupukari & Apoteri villages, near Ladysmith tributary. | | 3780725 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | B. Hoffman 5067 | Guyana. Potaro-Siparuni. Iwokrama. Essequibo River, floodplain betw. Kurupukari & Apoteri villages, near Ladysmith tributary. | | 03780755 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | H. D. Clarke 1336 | Guyana. Potaro-Siparuni. Iwokrama Rainforest Reserve; 5 km transect, near Ladysmith Creek, Essequibo R. | | 3780712 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | H. D. Clarke 2842 | Guyana. Upper Takutu-Upper Essequibo. Chodikar R., W of river & E of Acarai Mountains. | | 3780709 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | H. D. Clarke 3617 | Guyana. Upper Takutu-Upper Essequibo. Rewa River; forest between camp & unnamed mtn. 5.6 km W of camp. | | 3780706 |  |
| Heteropsis melinonii (Engl.) A.M.E.Jonker & Jonker | H. D. Clarke 11392 | Guyana. Cuyuni-Mazaruni. Wayalayeng Village, Falls of the Ataro River above first escarpment of Mount Maringma. | | 3780770 |  |
| Heteropsis spruceana Schott | H. D. Clarke 12018 | Guyana. Cuyuni-Mazaruni. Mt. Maringma, Arabaru River waterfall. | | 3780792 |  |
| Heteropsis melinonii (Engl.) A.M.E.Jonker & Jonker | B. Maguire 53737 | Venezuela. Bolívar. North portion of Cerro Uroi, Río Uroi. | | 3780769 |  |
| Heteropsis melinonii (Engl.) A.M.E.Jonker & Jonker | B. Maguire 53737 | Venezuela. Bolívar. Río Chicanán. In forest on summit, north portion of Cerro Uroi, Río Uroi. | | 3780771 |  |
| Heteropsis tenuispadix G.S.Bunting | B. G. Stergios D. 11526 | Venezuela. Amazonas. Atabapo Mun. 15 km arpox. al S-E de San Fernando de Atabapo. Bosque muy Húmedos de tierra firme en el Sector "El Pozo" en zona experimental de la CVG - Proyecto Caucho. | | 3780805 |  |
| Heteropsis robusta (G.S.Bunting) M.L.Soares | L. A. Delgado 760 | Venezuela. Amazonas. Atabapo Mun. Bosque medio en lomeríos del río Asisa-Río Parú. | | 3780777 |  |
| Heteropsis spruceana Schott | T. B. Croat 59323 | Venezuela. Amazonas. Vicinity of Cerro Nelina base camp on Río Mawariuma. | | 3780793 |  |
| Heteropsis spruceana Schott | T. B. Croat 59323 | Venezuela. Amazonas. Vicinity of Cerro Neblina base camp on Río Mawarinuma. | | 3780794 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | B. Maguire 28831 | Venezuela. Amazonas. Cerro Sipapo (Paráque), 3 km southwest of Base Camp. | | 3780739 |  |
| Heteropsis flexuosa (Kunth) G.S.Bunting | J. M. Cruxent 275 | Venezuela. Amazonas. Río Orinoco, cerca márgines del río. Bejuco. | | 3780747 |  |
| Heteropsis tenuispadix G.S.Bunting | L. C. M. Croizat 679 | Venezuela. Raudal Montserrat. | | 3780807 |  |
| Heteropsis tenuispadix G.S.Bunting | J. S. Miller 1599 | Venezuela. Amazonas. Atures Mun. Along the road to Gavilan near the bridge at Paso del Diablo, 20 km SE of Puerto Ayachucho. | | 3780808 |  |