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Adkins Mill. Wetland along road.

Urieville Lake along 213, Augustine Herman Way

North Tract, Patuxent Research Refuge, Road leading to BGE Power Line Right-of-Way Access Road, 300 feet west of South Road

Idylwild Wildlife Management Area, "Marshyhope Ponds" area, at edge of the “Bog Pond”

Patuxent Research Refuge--North Tract--Kalmia Swamp; Far East end of County Road, near Kalmia Swamp,

Rt 231, 0.5 mi W of Rt 381

North Tract, Patuxent Research Refuge, BGE Power Line Right-of-way Access Road, 4400 feet northwest of Duvall Bridge Road

North Tract, Patuxent Research Refuge, Lake Allen, east side jetty, 1020 feet North of Dam

North Tract, Patuxent Research Refuge, Old Stagecoach Meadow, 1850 feet east of Wildlife Loop

MD Hwy 355, 1.5 mi N of beltway, old White Flint Park golf course.

Town of Ocean City, along MD Rt. 528, Coastal Highway, at 118th Street, grassy area in parking area for super market.

Town of Preston, at the west end of Railroad Ave. near Lednum Ave. at edge of parking lot.

Town of Welcome, Mill Swamp Rd 0.25 mi S of MD Rt. 6, Port Tobacco road, woods on flood plain of Mill Run; 38.479722 -77.083861

Annapolis, along US Rt. 50 at MD Rt 2

W side of tennis courts, University of Maryland, College Park.

Along MD Rt. 32, Patuxent Freeway, just W of MD Rt. 295 Baltimore-Washington Parkway

College Park; University of Maryland, College Park Campus, behind greenhouses near creek.

Chino Farms, "Jack Woods" E of Forman's Branch

Chino Farms, "Jack's Woods" E of Forman's Branch

Town of Federalsburg, at end of Caroline Drive near water tower; 38.684761 -75.779706

Anthony Mill Rd, 0.4 mi W of Bates Rd and 0.7 mi E of Wilhelm Rd; along roadside power line right of way.; 38.868 -75.735083

Town of Welcome, Mill Swamp Road 1/4 mile S of MD Rt. 6, Port Tobacco Road, shady area along roadside at edge of flood plain of Mill Run.

Town of Welcome, Mill Swamp Road south of MD Rt. 6, Port Tobacco road, wet woods on flood plain of Mill Run.; 38.48225 -77.083944

Montgomery Botanical Center, Coconut Lake, NE corner

Smith Island jetties

Flag Ponds Nature Park, at beginning of tree zone of beach

Mouth of Blackwater River

Flag Ponds Nature Park, along gravel road near entrance

Anthony Mill Road, 0.4 miles west of Bates Road and 0.7 miles east of Wilhelm Road

Camp Conoy, Lusby

Brookside Nature Center near Georgia Ace, 4 mi E of 495 in Wheaton

University of Maryland, College Park; by soccer field.

Park and adjacent area at Calvert Rd and Rt 201

Lower trail past Boardwalk Junction, Flag Ponds Nature Park

Flag Ponds Nature Park, lower trail just past boardwalk junction

Roadside in Mardela Springs, 0.5 mi N of Mardela High School

Kirkham Station along Rt 33, Saint Michael's Rd at Traveler's Rest Rd.

Gaithersburg, Watkins Mill, Greenway Trail, along flood plain of North Creek, 0.2 mi E of its confluence with Great Seneca Creek, near foot bridge over creek.

Behind homes on Arden Road overlooking Cabin John Parkway, Cabin John

Lake Vee, Fairchild Tropical Garden

Berwyn Heights; growing outside of the Lake Artemesia fence near the gate and Indian Creek bike path.

On Liberty Reservoir property; trail head parking at the end of Bollinger Mill Road; growing along the fire road ca. 1 mile south and west of the parking area.

On Patapsco State Park Property, growing in an area behind Liberty Dam. Parking area ca. 500 feet north of Marriottsville Road; trail leads 3655 feet north from parking area to the base of the dam

On Liberty Reservoir property; trail head parking at the end of Bollinger Mill Road; growing along the woodland trail leading to the flood plain east of the parking area

Ridge Road (between Dogwood Road and Old Court Road); growing in plowed ground, on the west side of Ridge Road opposite Diamond Ridge Gold Course.

Jamesville Reservoir

Canandaigua Lake

Near Old Frederick Road and the Patapsco River, road bed near railroad tracks

Montgomery Botanical Center, Coconut Lake, N side

Beltsville; growing in a vacant field on the west side of Rhode Island Ave between Route 1 and Selman Road