| Collector | La-ongsri, W. |
| Number | 4509 |
| Collected with | P. Punyachan, T. Pingyot, T. S. Satatha |
| Country | Thailand |
| Subpart | Lampang |
| County | |
| Locality | Thad Noi waterfall, Na Kae Sub-District, Ngao district |
| Coordinates | |
| Minimum elevation (m) | 494 |
| Maximum elevation (m) | 494 |
| Start date | 2016/01/15 |
| End date | 2016/01/15 |
| Family | Convolvulaceae |
| Identification | Argyreia capitiformis (Poir.)Ooststr. |
| Determined by | |
| Identification qualifier | |
| Field notes | Climber with brown hairs near stream in mixed-deciduous forest. Flower purple. |