| Collector | Larsen, K. |
| Number | 46497 |
| Collected with | Supee S. Larsen, Christian Tange & Duangchai Sookchaloem |
| Country | Thailand |
| Subpart | CHIANG MAI |
| County | |
| Locality | Vachiratharn Waterfall on Doi Intanon. Upper mixed deciduous dipterocarp forest. |
| Coordinates | 18° 32' N 98° 36' E |
| Minimum elevation (m) | 650 |
| Maximum elevation (m) | 800 |
| Start date | 1995/09/15 |
| End date | 1995/09/15 |
| Family | Acanthaceae |
| Identification | Andrographis laxiflora (Bl.) Lindau |
| Determined by | Hansen, B. (C), 1996. |
| Identification qualifier | |
| Field notes | |