| Collector | Lawesson, J. E. |
| Number | 39573 |
| Collected with | Laessoe, T. & Jorgensen, P. M. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Village of Añangu, north side of Río Napo. Trail from village to Laguna. Tropical rain forest. |
| Coordinates | 0° 31' S 76° 23' W |
| Minimum elevation (m) | 260 |
| Maximum elevation (m) | 260 |
| Start date | 1983/05/02 |
| End date | 1983/05/02 |
| Family | Fabaceae |
| Identification | Cassia cowanii var. peruviana (Macbr.)I. & B. |
| Determined by | R. Barneby, 1985 |
| Identification qualifier | |
| Field notes | Tree 25 m high. Petals yellow. . |