| Collector | Larsen, K. |
| Number | 45400 |
| Collected with | Supee S. Larsen, Christian Tange, Robbin Moran & P. Puudjaa |
| Country | Thailand |
| Subpart | PRACHUAP KHIRI KHAN |
| County | |
| Locality | Kaeng Kra Chan Nat. Park, southern section. Pa Lao U. Evergreen forest along Pran Buri river. Limestone |
| Coordinates | 12° 32' N 99° 33' E |
| Minimum elevation (m) | 250 |
| Maximum elevation (m) | 250 |
| Start date | 1995/08/04 |
| End date | 1995/08/04 |
| Family | Rubiaceae |
| Identification | Ixora nigricans R. Br. ex Wight & Arn. |
| Determined by | Chamchumroon, V. (BKF), 2002. |
| Identification qualifier | |
| Field notes | Small tree along the river |