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4 1/2 mi SE of Salisbury, on Portsmouth Sand

Along Fifteen Mile Creek Rd. N of U.S. Hwy 40 near the mouth of Pine Lick Hollow with 15 Mile Creek just NNE of the junction of the Carpenter Rd, about 1 mile N of old U.S. 40 and 0.2 mile SSW of the junction of Double Pine Rd.

Along Patapsco River, Hoods Mills

Hancock

woods near Collins Mill Pond, 7 mi W of Georgetown

Fort Washington, near fort gate

U.S. Rte 50, Ocean Gateway just N of MD Rte 404, Queen Anne Highway

along River Road, 0.8 mi W of Seneca (townsite) and ca. 2.8 mi E of the junction of Hughes Road

South Rd, 630 ft NW of Wildlife Loop; North Tract, Patuxent Research Refuge.

Farm along U.S. 15 N 3mi. N of Frederick

Loch Raven Station, 1.12 mi, 46 degrees.

Nanjemoy Nature Reserve, off Friendship Landing road

White Ferry

Ellicott City; Near U.S. 29

Four Oaks. Gulf filling station on U.S. 421

Largo, woods behind houses on Duxbury Dr. close to creek bank (1 m).

Stonington; Latimers Point

3 km N of Ironside MD. Off MD Rte 224

College Park; University Blvd. near U. of Md

Owens Creek at Eagle Mt

College Park; Found along College Avenue

College Park; Near Cattail Hill

Minnie Dorsey Property, Clarksville

Patuxent River Rd (unpaved), 1 mi from Research Center headquarters.

Bridge route. "Cattle Hyme" to the east

At the head of Old Man Creek of the Magothy River in the town of Severna Park

Assateague Island. N of Md. State Park day-use parking lot

Along Riggs Rd, upstream along Northwest Branch, 0.2 mi from Adelphi Mill.

W side of unimproved road to McCabe house, just S of National Seashore boundary; State Park

Assateague Island. 46th St

entrance to Little Patuxent River

At the bridge spanning the Patuxent River on Patuxent Rd, ca. 0.6 mi W of the junction with Rt 3 at Conaways.

Boonsboro; 2 mi out on Boonsboro Rd., Rte 2, Box 355 - farm

Greenbelt; Near Greenbelt Lake

Power line section 1, near Chillum

Woodstock, roadside

College Park, reservoir

Rte 12, E of Salisbury

in field N of Kenilworth, D.C.

Brandy Wine Creek, Montchanin

Newberry Township, Farm of R. E. Yonger

aAt Georgia Ave. On Bel Pre Road

valley 2 mi E of Meadow Mountain

Tucker's Run 0.5 mi W of Rt. 570

Cement Mill

Billingsly Point area of Patuxent River Park

Pretty Boy Dam, Parkton

Floodplain along S side of Patapsco River, 0.1 mi NE of Norris Lane, Patapsco State Park, 4 mi SE of Ellicott City

Marshallee Lane 1 mi S off Montgomery Road

End of Shures Landing Road; Susquehanna River floodplain 0.5 mi below Conowingo Dam, Conowingo Village