| Collector | Ollgaard, B. |
| Number | 57121 |
| Collected with | Korning, J. & Thomsen, K. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Añangu, NW corner of the "Parque Nacional Yasuní". Sample plot on ridge top at point 81 on the SEF terra firme line. Rain forest dominated by Phenakospermum. |
| Coordinates | 0° 33' S 76° 22' W |
| Minimum elevation (m) | 320 |
| Maximum elevation (m) | 320 |
| Start date | 1985/01/23 |
| End date | 1985/01/23 |
| Family | Annonaceae |
| Identification | Guatteria duodecima Maas & Westra |
| Determined by | P.J.M.Maas & L.Y.Th Westra |
| Identification qualifier | |
| Field notes | 10 m tall tree, DBH c. 13 cm. |
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