| Collector | Madsen, J. E. |
| Number | 2538 |
| Collected with | O. Belem, A. Goudiaby, J. Ilboudo, T. Paulette, S. S. Renner & S. Traoré |
| Country | Senegal |
| Subpart | TAMBACOUNDA |
| County | |
| Locality | Parc National du Niokolo Koba. Mare de Simenti. Moist border of marsh. |
| Coordinates | 13° 2' N 13° 18' W |
| Minimum elevation (m) | 30 |
| Maximum elevation (m) | 30 |
| Start date | 1993/10/20 |
| End date | 1993/10/20 |
| Family | Onagraceae |
| Identification | Ludwigia erecta (L.)Hara |
| Determined by | Aké Assi L., (ABIDJAN), 1995 |
| Identification qualifier | |
| Field notes | Herb. Flowers yellow. |
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