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Along MD Rt. 33, Saint Michaels Road, 0.3 miles west of Bloomfield Road, roadside ditch.

Pilot Serpentine Barren Preserve (The Nature Conservancy) 0.7 m NW of Oakwood, 0.1 mi N of Pilot Town Road

Brownsville; Near Brownsville, Elk Ridge Mt

Patapsco State Park. Collected on W bank, 2.0 mi N of Avalon Dam

Northeast of the town of Vienna, along Indiantown Road at Chicone Creek

Along MD Rt. 12, Snow Hill Road, 0.2 miles north of Saint Lukes Road, roadside ditch.

Hillsdale Park, Forest Park; 39.325601 -76.707765

Oregon Ridge Park, Cockeysville.; 39.485083 -76.688944

Assateague Island. Bayside marsh S of Maryland bridge

New Jersey Pine Barrens, in a field at end of a road off Rt 563.

Patapsco State Park S of Old Court Rd along the horse trail about 100 ft S of the bridge across the Patapsco River.

On Liberty Reservoir property, trail head parking at end of Bollinger Mill Rd in a woodland near the high water mark in the vicinity of a quarry hole; accessed by taking the pipeline clearing southward to the valley and heading to edge of the lake.

Assateague Island. NW corner of Bayside campground, North Beach, National Seashore

Collected outside of Edgewood, probably in Edgewood Arsenal where a plant survey was being undertaken

Eastern Neck Island National Wildlife Refuge at the S side of the island

On Liberty Reservoir Property; the boat ramp area at the end of the old Liberty Rd, ca. 50 ft from the edge of water.

2837 Ridge Road (Ridge Road Connects Dogwood and Old Court Road),

On Liberty Reservoir Property growing in an area behind Liberty Dam, parking area ca. 500 ft N of Marriottsville Rd; trail leads 3655 ft N from the parking area to the base of the dam.

Elkridge, Rockburn Park in woodland

Elkridge, Rockburn Park

Deer Park Rd, Soldiers' Delight

Lanham; Near Seabrook Park Estates on Annapolis Road

Opposite Pigeon House, intersection U.S. 50 & 301

Mitchellville; Davis Nursery

Mt. Santa Rosa. Savanna area below radar dome

Beltsville; U.S.D.A Research Center, W side of Rte 1, in front of bldg. 003

Randallstown, 2839 Ridge Rd in hay field.

Oregon Ridge Park, Cockeysville, MD

Oregon Ridge Park, Cockeysville; 39.485083 -76.688944

On a 100+ acre public park.

Yard at the intersection of Hughes Rd and Hughes Ct in Adelphi.

Tolchester Estates, 12 mi W of Chestertown, N end of road between Queen Anne Street and Bayside Avenue

North Tract, Patuxent Research Refuge, BGE Power Line Right-of-way Access Road, 4800 feet northwest of Duvall Bridge Road

North Tract, Patuxent Research Refuge, Sundew Bog, BGE Power Line Right-of-Way Access Road, 600 feet southeast of Lemons Bridge Road

North Tract, Patuxent Research Refuge, BGE Power Line Right-of-way Access Road, 5800 feet northwest of Duvall Bridge Road

Newport, slope off VA 613

North tract of Patuxent Environmental Science Center. At the corner of River road and Duvall bridge road about 0.5 miles from Wildlife Loop.

North Tract, Patuxent Research Refuge, East part of Lake Allen, 500 feet north of dam

North Tract, Patuxent Research Refuge, Lake Allen, near jetty, 30 feet southeast of Rogue Harbor Bridge across Lake Allen Inlet

North Tract, Patuxent Research Refuge, BGE Power Line Right-of-way, Access Road, 1620 feet northwest of Duvall Bridge Road

Newport. Growing on a steep slope off VA-613.

Lawyers Hill Rd, Elkridge 750 ft NE of Montgomery Rd

Along Oldtown Road 1 mi E of junction of M.V. Smith Road and 2 mi W of Little Orleans, 1.2 mi NE of Carroll Road

Woods bordering Columbia Country Club golf course, W side of Connecticut Ave, 0.5 mi inside beltway (I-495).

Assateague Island. Just W of paved road remnant at N end of Fox Hills; 4.2 mi S of beach access road #1

Perryville; 2 mi off old Rte 222

on Liberty Reservoir Property, trail head parking on S side of Nicodemus Road, 1.0 mile W of bridge and 1.3 miles E of Louisville Road. Trail south 1265 ft. to cross trail, south on trail another 1073 ft. to a fork, 3540 ft. on SW fork to end of trail.

Berwyn Heights; growing on the southern section of the College Park Airport fence next to the bike path

Hollofield; parking lot on Alberton Road near Dogwood Road, growing along the dirt road leading from the Alberton Rd trail to the top of the hill and the high voltage power lines.

On Liberty Reservoir Property in area behind Liberty Dam; parking are ca. 500 ft N of Marriottsville Rd, trail leads 3655 ft N from the parking area to the base of the dam.