Magnolia seepage bog in drainage of Indian Creek, 1.2-1.4 km W of Ammendale (jct. US-1 and Ammendale Road), 1.8 km NW of Beltsville (jct. US-1 and SR 212)., Prince Georges, Maryland, United States, North America
Fort Belvoir Proving Grounds, just W of VA Rt. 617 (Backlick Rd.) and I-95 exit 167, ca. 2 mi. S of Springfield., Fairfax, Virginia, United States, North America
Roaches Run Waterfowl Sanctuary, W side of George Washington Memorial Parkway, just N of Reagan National Airport, along Potomac River, 0.7 km W of Gravelly Point, Arlington, Virginia, United States, North America