| Collector | Christensen, H. M. |
| Number | 1723 |
| Collected with | |
| Country | Malaysia |
| Subpart | SARAWAK |
| County | |
| Locality | 2nd division, Lubok Antu District, river Delok, near Nanga Sumpa. On slope in old secondary forest. |
| Coordinates | 1° 20' N 112° 10' E |
| Minimum elevation (m) | 200 |
| Maximum elevation (m) | 200 |
| Start date | 1995/02/15 |
| End date | 1995/02/15 |
| Family | Annonaceae |
| Identification | Polyalthia motleyana (Hook. |
| Determined by | Bygrave, P., 1994. |
| Identification qualifier | |
| Field notes | Tree, some 5 m. tall. Pale yellow fruits. Flowers pale yellow with some purple towards the base. Uses: The wood is used for boat stick, spearhandle etc. Name in Iban language: Semukau. |