Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
116512
| AR | Chicot | Mississippi River (R.M. 537) on a rock revetment on west side of river across from mouth of Lake Ferguson (Greenville, MS) | 1992 |
08030100
| Lower Mississippi-Greenville | established |
116446
| AR | Chicot | Mississippi River at R.M. 537 below rock dike across from mouth of Lake Ferguson | 1992 |
08030100
| Lower Mississippi-Greenville | established |