| Collector | Larsen, K. |
| Number | 41043 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan and P. Sirirugsa |
| Country | Thailand |
| Subpart | SONGKHLA |
| County | |
| Locality | Ton Nga Chang waterfall, 20 km W of Hat Yai |
| Coordinates | 7° 0' N 100° 10' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 250 |
| Start date | 1990/11/01 |
| End date | 1990/11/01 |
| Family | Acanthaceae |
| Identification | Thunbergia hamomacalyca Suwanph. |
| Determined by | C. Suwanphakdee & H. Balslev |
| Identification qualifier | |
| Field notes | By trail in evergreen forest. |
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