| Collector | Larsen, K. |
| Number | 44192 |
| Collected with | Supee S. Larsen, Chr. T. Norgaard, K. Pharsen, P. Puudjaa, and W. Uerchirakan |
| Country | Thailand |
| Subpart | SONGKHLA |
| County | |
| Locality | Suan Toon waterfall at Khao Gaeo, c. 10 km S of Songkhla, on the highway Songkhla-Chana. Secondary forest on granitic mountain sloping towards small stream; and gravelly, swampy grassland at fotthill. |
| Coordinates | 7° 4' N 100° 32' E |
| Minimum elevation (m) | 75 |
| Maximum elevation (m) | 75 |
| Start date | 1993/11/01 |
| End date | 1993/11/01 |
| Family | Rubiaceae |
| Identification | Oldenlandia |
| Determined by | |
| Identification qualifier | |
| Field notes | On open gravelly soil. Flowers dark bluish-violet |
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