| Collector | Larsen, K. |
| Number | 43019 |
| Collected with | S. S. Larsen, S. S. Renner, C. Niyomdham, W. Ueachirakan & P. Sirirugsa |
| Country | Thailand |
| Subpart | NARATHIWAT |
| County | |
| Locality | Pong Pong waterfal. Evergreen forest along waterfall. |
| Coordinates | 6° 38' N 101° 14' E |
| Minimum elevation (m) | 50 |
| Maximum elevation (m) | 200 |
| Start date | 1992/06/19 |
| End date | 1992/06/19 |
| Family | Rubiaceae |
| Identification | Psychotria viridiflora Reinw. |
| Determined by | T. Srisuk |
| Identification qualifier | |
| Field notes | "Undershrub up to 1 m; fruits red" |
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