| Collector | Larsen, K. |
| Number | 41360 |
| Collected with | S. S. Larsen, A. S. Barfod, W. Nanakorn, W. Ueachirakan & P. Sirirugsa. |
| Country | Thailand |
| Subpart | TRANG |
| County | |
| Locality | Ton Teh waterfall, S of Khao Chong. Along waterfall. |
| Coordinates | 7° 25' N 99° 45' E |
| Minimum elevation (m) | 100 |
| Maximum elevation (m) | 150 |
| Start date | 1990/11/14 |
| End date | 1990/11/14 |
| Family | Acanthaceae |
| Identification | Justicia grossa C. B. Clarke |
| Determined by | Hansen, B. (C), 1991. |
| Identification qualifier | |
| Field notes | Shrub, 3 m high. Flowers greenish. |
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