| Collector | Lawesson, J. E. |
| Number | 39581 |
| 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 | Bombacaceae |
| Identification | Matisia longiflora Glecson |
| Determined by | B. Alverson, 1990, on dupl. in QCA. |
| Identification qualifier | cf. |
| Field notes | Tree 10 m high. Calyx brown. Local name: "Chucula Caspi", they use the wood. . |