| Collector | La-ongsri, W. |
| Number | 5734 |
| Collected with | P. Panyachan, P. Tatiya, S. Satata & S. Wongwan |
| Country | Thailand |
| Subpart | Kanchanaburi |
| County | |
| Locality | Si Sawat District, Chaloem Rattanakosin National Park, Than Lod Noi cave |
| Coordinates | 14° 40' 12.54'' N 99° 17' 18.1'' E |
| Minimum elevation (m) | 595 |
| Maximum elevation (m) | 595 |
| Start date | 2018/08/21 |
| End date | 2018/08/21 |
| Family | Asclepiadaceae |
| Identification | Heterostemma siamicum Craib |
| Determined by | |
| Identification qualifier | |
| Field notes | Climber with white latex on limestone hill in mixed-deciduous forest. Flower yellow. |
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