| Collector | Madsen, J. E. |
| Number | 3638 |
| Collected with | |
| Country | Senegal |
| Subpart | KEDOUGOU |
| County | |
| Locality | Dindéfello. Trail to the waterfall. Gallery forest with Ceiba pentandra along permanent stream. |
| Coordinates | 12° 22' N 12° 19' W |
| Minimum elevation (m) | 170 |
| Maximum elevation (m) | 220 |
| Start date | 1994/10/20 |
| End date | 1994/10/20 |
| Family | Acanthaceae |
| Identification | Justicia tenella (Nees) T. Anders. |
| Determined by | J. E. Madsen (DAKAR), 1995 |
| Identification qualifier | |
| Field notes | Creeping, semi-aquatic herb. Flowers violet. |