| Collector | Tan, S. |
| Number | 378 |
| Collected with | Balslev, H., Nielsen, I. & Poulsen, A. D. |
| Country | Brunei |
| Subpart | TEMBURONG |
| County | |
| Locality | TEMBURONG, Batu Apoi Forest Reserve, ridge west of Kuala Belalong Field Studies Center, Danish plot 1. Setap shale formation. |
| Coordinates | 4° 10' N 116° 30' E |
| Minimum elevation (m) | 150 |
| Maximum elevation (m) | 210 |
| Start date | 1991/04/15 |
| End date | 1991/06/01 |
| Family | Myristicaceae |
| Identification | Horsfieldia polyspherula (Hook.f.)J. Sinclair |
| Determined by | |
| Identification qualifier | |
| Field notes | "Square: 10.65, DBH: 16.0 cm. , POM: 1.30 m. , Coord: (9.15 m.; 66.90 m.), Height: 22.6 m." |
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