| Collector | Larsen, K. |
| Number | 42808 |
| Collected with | S. S. Larsen, S. S. Renner, C. Niyomdham, W. Ueachirakan & P. Sirirugsa |
| Country | Thailand |
| Subpart | SONGKLA |
| County | |
| Locality | W. side of Koh Hong, Hat Yai |
| Coordinates | 7° 0' N 100° 20' E |
| Minimum elevation (m) | 75 |
| Maximum elevation (m) | 100 |
| Start date | 1992/06/11 |
| End date | 1992/06/11 |
| Family | Acanthaceae |
| Identification | Pseuderanthemum graciliflorum (Nees) Ridl. |
| Determined by | Hansen, B. (C), 1996. |
| Identification qualifier | |
| Field notes | Common in old rubberplantations |