| Collector | Thammarong, W. |
| Number | 1137 |
| Collected with | S. Rakarcha, S. Wongwan, M. Tabut |
| Country | Thailand |
| Subpart | Bueng Kan |
| County | |
| Locality | Chet Si Waterfall, Ban Tong, Ban Tong Sub-District, Seka district |
| Coordinates | |
| Minimum elevation (m) | 210 |
| Maximum elevation (m) | 210 |
| Start date | 2019/12/11 |
| End date | 2019/12/11 |
| Family | Acanthaceae |
| Identification | Justicia subcoriacea Ridl. |
| Determined by | |
| Identification qualifier | |
| Field notes | Small shrub ca. 1 m high on rock. Bract dark brown. Corolla white with brown dots. Anther white. |