| Collector | Larsen, K. |
| Number | 41448 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | TRANG |
| County | |
| Locality | Lamphura, 10 km N of Trang. Humid rock crevises in limestone outcrop. |
| Coordinates | 7° 30' N 99° 40' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 150 |
| Start date | 1990/11/16 |
| End date | 1990/11/16 |
| Family | Balsaminaceae |
| Identification | Impatiens larsenii T. Shimizu |
| Determined by | P. Suksathan & P. Triboun |
| Identification qualifier | |
| Field notes | Flowers yellow. Alc.mat. |
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