| Collector | Brandbyge, J. |
| Number | 33566 |
| Collected with | Asanza, E. & Werling, L. & Leth-Nissen, S. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Cuyabeno. Collections along the riverside on both sides of the river from the mouth and two hours upstream. |
| Coordinates | 0° 10' S 75° 53' W |
| Minimum elevation (m) | 300 |
| Maximum elevation (m) | 300 |
| Start date | 1981/08/16 |
| End date | 1981/08/16 |
| Family | Apocynaceae |
| Identification | Odontadenia macrantha (Roem. & Schult.)Mgf. |
| Determined by | A. J. M. Leuwenberg, 1984 |
| Identification qualifier | |
| Field notes | Scandent shrub or liana. Flowers yellowish to pale orange. |
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