| Collector | Christensen, H. M. |
| Number | 1582 |
| Collected with | |
| Country | Malaysia |
| Subpart | SARAWAK |
| County | |
| Locality | 2nd division, Lubok Antu District, river Delok. Lightgab in secondary forest near Nanga Sumpa. |
| Coordinates | 1° 20' N 112° 10' E |
| Minimum elevation (m) | 200 |
| Maximum elevation (m) | 200 |
| Start date | 1993/10/25 |
| End date | 1993/10/25 |
| Family | Xanthophyllaceae |
| Identification | Xanthophyllum obscurum Bennet |
| Determined by | Christensen, H. |
| Identification qualifier | |
| Field notes | Tree some 35 m. tall. Cut branches and twigs turns black after 1-2 hours of exposure to air. Fruits round, about 10 cm. dia. Uses: Edible fruit. Name in Iban language: Ranggir Besai. |