| Collector | Pooma, R. |
| Number | 4860 |
| Collected with | Phattarahirankanok, K.; Sirimongkol, S & Poopath, M |
| Country | Thailand |
| Subpart | Chiang Rai |
| County | |
| Locality | Mae Chan. Along the road sto Wat Pa Acha Thong. Deciduous forest, open areas on limestones |
| Coordinates | 20° 13' 40'' N 99° 48' 44'' E |
| Minimum elevation (m) | 450 |
| Maximum elevation (m) | 450 |
| Start date | 2005/03/17 |
| End date | 2005/03/17 |
| Family | Acanthaceae |
| Identification | Thunbergia grandiflora Roxb. |
| Determined by | C. Suwanphakdee & H. Balslev |
| Identification qualifier | |
| Field notes | Climber, leaves dull green above covered with brownish hairs, pale green below; calyx green-reddish, corolla lobes purplish; anthers 2, whitish cream; stigma white; dry fruits black. |
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This record