| Collector | Madsen, J. E. |
| Number | 4122 |
| Collected with | |
| Country | Senegal |
| Subpart | SAINT-LOUIS |
| County | |
| Locality | Rd. Saint Louis - Richard-Toll, km 32. Left over grassland on sandy hills between cultivated fields. |
| Coordinates | 16° 10' N 16° 17' W |
| Minimum elevation (m) | 30 |
| Maximum elevation (m) | 30 |
| Start date | 1995/09/03 |
| End date | 1995/09/03 |
| Family | Convolvulaceae |
| Identification | Xenostegia tridentata (L.) D.F. Austin & Staples |
| Determined by | Staples, G. (BISH), 2003. |
| Identification qualifier | |
| Field notes | Prostrate with taproot. Much branched from base with 0.5-1.5 m long branches. Flowers pale yellow. |