| Collector | Brandbyge, J. |
| Number | 33721 |
| Collected with | Asanza, E. & Werling, L. & Leth-Nissen, S. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Cuyabeno. Collections made along the riverside from 2 to 6 km upstream from Puerto Bolívar. |
| Coordinates | 0° 6' S 76° 10' W |
| Minimum elevation (m) | 300 |
| Maximum elevation (m) | 300 |
| Start date | 1981/08/18 |
| End date | 1981/08/18 |
| Family | Fabaceae |
| Identification | Senna spinescens (Vog.)Irwin & Barneby |
| Determined by | R. Barneby |
| Identification qualifier | |
| Field notes | Tree 10 m. Flowers yellow. |
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