| Collector | Nielsen, I.C. |
| Number | 1584 |
| Collected with | C. Niyomdham, T. Jonganurak, N. Hemrath & J. Rithipheth |
| Country | Thailand |
| Subpart | Nong Khai |
| County | |
| Locality | Phu Wua Wildlife Sanctuary |
| Coordinates | 18° 5' N 103° 59' E |
| Minimum elevation (m) | 400 |
| Maximum elevation (m) | 400 |
| Start date | 2004/08/09 |
| End date | 2004/08/09 |
| Family | Rubiaceae |
| Identification | Argostemma |
| Determined by | |
| Identification qualifier | |
| Field notes | Mixed deciduous Dipterocarp forest on steep slopes and sandstone plateau. On humid rock, in deep shade. |
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