| Collector | Larsen, K. |
| Number | 42390 |
| Collected with | S. S. Larsen, C. Niyomdham, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | SATUN |
| County | |
| Locality | Boripath waterfall |
| Coordinates | 7° 0' N 100° 12' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 200 |
| Start date | 1991/10/19 |
| End date | 1991/10/19 |
| Family | Acanthaceae |
| Identification | Strobilanthes serpens (Nees) J.R.I.Wood & Scotland |
| Determined by | P. Kladwong |
| Identification qualifier | |
| Field notes | Creeping over rocks and on humid soil. Leaves pale violet underneath. Flowers violet; lower lip with 3 pale white spots. Alc. |
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