- Franklin Road1
- Frenchtown1
- Furnace.1
- Glenn Dale1
- Gunpowder River1
- Hamilton1
- Hammel Glade Swamp, along the western edge of the swamp about 0.1 mile east of Foster Road, 0.5 mile south of Bray School Road, about 2.5 air miles southwest of Thayerville.1
- Hampden1
- Hampton (near Towson), Baltimore Co.1
- Harwood Pond1
- Hellen Creek Preserve & vicinity, 4 miles north of Solomon's Island.1
- Hellen Creek Preserve.1
- Herring Creek, Tall Timbers.1
- Hoyes Run1
- Hyattsville1
- In clearing, vicinity of Landover, near Bladensburg1
- Indian Springs, 1 mile west of Greenbelt1
- Lil Aaron Strauss Wilderness Area, Maryland Department of Natural Resources, Little Orleans. North slope of ridge located north of Zeigler Rd bridge (over Sideling Hill Creek) along bank of fire road (both sides), about 200 feet from intersection with the1
- Loch Raven (S side)1
- Loch Raven Reservoir near junction of Jarrettsville and Dulaney Valley Rds.1