| Collector | Nielsen, I.C. |
| Number | 1639 |
| Collected with | C. Niyomdham, T. Jonganurak, N. Hemrath & J. Rithipheth |
| Country | Thailand |
| Subpart | Nong Khai |
| County | |
| Locality | Tambong Nong Dern; Chamong Waterfall; |
| Coordinates | 17° 50' N 103° 40' E |
| Minimum elevation (m) | 460 |
| Maximum elevation (m) | 460 |
| Start date | 2004/08/10 |
| End date | 2004/08/10 |
| Family | Fabaceae |
| Identification | Phaseolus L. |
| Determined by | |
| Identification qualifier | |
| Field notes | Secondary vegetation and left plantation. Phaseoleae, vine on shrub; leaflets dark olive-green; calyx olive, petals light blue |
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