| Collector | La-ongsri, W. |
| Number | 5291 |
| Collected with | T. Pingyot, P. Tatiya, S. Satatha and S. Wongwan |
| Country | Thailand |
| Subpart | Kanchanaburi |
| County | |
| Locality | Si Sawat District, Chalerm Rattanakosin National Park, Ban Wang Yao |
| Coordinates | 14° 38' 58.66'' N 99° 23' 53.25'' E |
| Minimum elevation (m) | 220 |
| Maximum elevation (m) | 220 |
| Start date | 2017/07/27 |
| End date | 2017/07/27 |
| Family | Acanthaceae |
| Identification | Ruellia tuberosa L. |
| Determined by | |
| Identification qualifier | |
| Field notes | Herb 30 cm high by roadsides. Flower purple. |
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