| 1 | Native | Southern America | Brazil | Brazil | Acre | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Brazil | Brazil | Amazonas | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Central America | Costa Rica | | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Northern South America | Venezuela | Barinas | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Northern South America | Venezuela | Táchira | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Bolivia | La Paz | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Colombia | Boyacá | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Colombia | Chocó | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Colombia | Meta | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Azuay | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | El Oro | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Guayas | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Morona Santiago | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Napo | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Pastaza | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Sucumbíos | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Tungurahua | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Ecuador | Zamora Chinchipe | | Boom, B. M. 1984. A revision of Isertia (Isertieae: Rubiaceae). Brittonia 36:425-454. |
| 1 | Native | Southern America | Western South America | Peru | Amazonas | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Cusco | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Junín | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | La Libertad | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Loreto | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Madre de Dios | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Pasco | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | San Martín | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 1 | Native | Southern America | Western South America | Peru | Ucayali | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |