| Collector | La-ongsri, W. |
| Number | 5395 |
| Collected with | P. Panyachan, P. Tatiya, S. Satata & S. Wongwan |
| Country | Thailand |
| Subpart | Kanchanaburi |
| County | |
| Locality | Si Sawat District, Chaloem Rattanakosin National Park, Than Lot Yai cave |
| Coordinates | 14° 40' 26.82'' N 99° 17' 0'' E |
| Minimum elevation (m) | 642 |
| Maximum elevation (m) | 642 |
| Start date | 2017/11/14 |
| End date | 2017/11/14 |
| Family | Polygalaceae |
| Identification | Polygala umbonata Craib |
| Determined by | |
| Identification qualifier | |
| Field notes | Herb 30 cm high on limestone in mixed-deciduous forest. Flower yellow. |
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