Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
235975
| MD | Washington | Greenbrier Lake, Greenbrier State Park, near Myersville or Hagerstown, hwy US 40. | 2005 |
02070004
| Conococheague-Opequon | unknown |
235977
| MD | Washington | Little pool in Chesapeake and Ohio Canal National Historical Park, Hancock, near I-70. | 1999 |
02070004
| Conococheague-Opequon | unknown |
235976
| MD | Washington | Little pool in Chesapeake and Ohio Canal National Historical Park, Hancock, near I-70. | 2003 |
02070004
| Conococheague-Opequon | unknown |