| Collector | Larsen, K. |
| Number | 41028 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | SONGKHLA |
| County | |
| Locality | Ton Nga Chang waterfall, 20 km w of Hat Yai |
| Coordinates | 7° 0' N 100° 10' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 250 |
| Start date | 1990/11/01 |
| End date | 1990/11/01 |
| Family | Dipterocarpaceae |
| Identification | Hopea ferrea Laness. |
| Determined by | Pooma, R. (BKF), 2000. |
| Identification qualifier | |
| Field notes | Tree 6 - 7 m tall at stream. |