| Collector | Madsen, J. E. |
| Number | 3580 |
| Collected with | A. Goudiaby & I. Sonkho |
| Country | Senegal |
| Subpart | SAINT-LOUIS |
| County | |
| Locality | Lac de Guiers. Border of lake with both humid and dry soils. Sparsely covered with grasses. |
| Coordinates | 16° 19' N 15° 52' W |
| Minimum elevation (m) | 0 |
| Maximum elevation (m) | 0 |
| Start date | 1994/10/12 |
| End date | 1994/10/12 |
| Family | Onagraceae |
| Identification | Ludwigia adscendens (L.)Hara |
| Determined by | Aké Assi L., (DAKAR), 1995. |
| Identification qualifier | |
| Field notes | Herb. Flowers yellow. |
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