| Collector | Thammarong, W. |
| Number | 3944 |
| Collected with | S. Rakarcha, S. Yokyo, C. Duangdang, M. Tabut |
| Country | Thailand |
| Subpart | Phayao |
| County | |
| Locality | Pha Kret Nark, Ban Sang, Mueang Phayao district |
| Coordinates | |
| Minimum elevation (m) | 777 |
| Maximum elevation (m) | 777 |
| Start date | 2022/10/26 |
| End date | 2022/10/26 |
| Family | Acanthaceae |
| Identification | Justicia pallida J.B.Imlay |
| Determined by | |
| Identification qualifier | |
| Field notes | Ecology: mixed deciduous forest. Herb of limestone. Flower cream-pale green with purple marks. |