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Annapolis Junction, along Corridor Road, 0.1 miles north of Junction Drive

Plant Intro. Sta., Glenn Dale

1.2 mi N of Thompson on Rt. 171, Florence Shelly Preserve, E of junction of Stack Road & Rt. 171

3.5 miles N of the town of Thompson on Route 171; M.L. Cronlund property, along corridor on E side of Rt. 171

MD Rte 335, Golden Hill Road, at the Blackwater River

Bethany; Town of South Bethany, DE Rte 1, Coastal Highway, York Beach, 0.5 miles south of Assawoman Street

Severna Park; Town of Severna Park, along the B&A Trail south of Earleigh Heights Road

rear corner of lot behind 4316 Cassell Blvd., Prince Frederick.

4.8 mi S of Chesapeake Beach on Rt 261, unpaved extension of Chavez Ln in Willows subdivision.

Kingsville Nursery, Kingsville

Huntingtown, W of Rt 4 in wooded hill and ravine W side of Periwinkle Stream, 0.25 mi N of Hunting Creek.

Hurlock, MD Rte 331, Shiloh Church Hurlock Road, between Skeet Club Road and Ennalls Road, ditch on east side of road at edge of agricultural fields

near Md. City, 0.7 mi. N ot Rt. 197/Montpelier on Brock Bridge Rd., Patuxent River

Town of Federalsburg, MD Rte 318, Federalsburg Highway, east of MD Rte 313, Reliance Avenue, and west of railroad tracks, in tree along road, host tree, Acer saccharinum Linnaeus

Severna Park, at the head of the main branch of Cypress Creek near Ritchie Highway (MD 2); "Cypress Creek Bog".

Along Fifteen Mile Creek Road N of U.S. hwy 40 near the mouth of Pine Lick Hollow with Fifteen Mile Creek, just NNE of the junction of Carpenter Road, about 1 mi N of old U.S. 40 and 0.2 mi SSW of the junction of Double Pine Road, W of the main road

Junction of Bioling Springs Road and Bethlehem Road about 3.5 mi S of Deer Park and about 4 mi ESE of Mountain Lake Park

Along MD hwy 51, just W of old Oldtown Road junction at the S end of Walnut Ridge between Spring Gap and Oldtown, about 7 air miles SW of Cumberland

Along Thomas Road on the E slope of Town Hill, 3 mi NNE of MD hwy 51 and 1.5 mi SSW of Mertens Avenue, near a stream flowing into Twigg Hollow

Cowans Gap Lake behind Nature Center,Cowans Gap State Park

4906 Lackawanna Street, College Park

613 Tennyson Avenue, Winchester

Lake Tomahawk outside cabin at Kemp Station

Along the Potomac River, Cabin John

Glen Dale, between Plant Introduction Station and Glen Dale Hospital

5818 Greenlawn Drive, Bethesda

Gorsuch Road, Westminster

110 Connolly Road, Fallston

Near edge of golf course, Spring Green Drive, Crofton

Near Angler's Inn, Cabin John

Crystal Lake

Wetland along Rte 77

Between Seneca and Tobytown, vicinity of Bockhouse Point

Grantsville, along the W bank of the Casselman River N of Rte 40

Sugarloaf Mountain Road, E side, 3 mi S of Urbana

Cherry Creek Swamp along Rocky Lodge Road between Rock House and McHenry Road, about 3 air miles due W of McHenry and about 12 air miles NNW of Oakland

W end of Beaver Dam Road woods in vicinity of duckweed pond, Central Farm, Beltsville Agricultural Research Center, Beltsville.

Central Farm, Beltsville Agricultural Research Station

Field, Agricultural Research Center, East, Beltsville

Along creek, South Farm, Beltsville Agricultural Research Center, Beltsville.

Beltsville Agricultural Research Center, East Farm. Abandoned airport east of Springfield Road (plot 49), eest of the NNW-SSE runway opposite the man-made pond near the boundary of the Patuxent Wildlife Refuge at the southern end of the runway

BARC - fields to the W of Beck Lake across highway from coniferous forest

Beltsville Agricultural Center, Central Farm along north-south power line N of Beaver Dam Rd and E of Log Lodge (Plot 22-Log Lodge Woodland Complex) N of small pond.

Beltsville Agricultural Center, East Farm, Deciduous Research Forest (Plot 36) at W end of power line N of Beaver Dam Rd near fields NE of intersection of Soil Conservation Rd and Beaver Dam Rd (Plot 37).

Suitland Bog, Growing inside the fenced enclosure against fence 12 meters N of the Southwestern fence corner

Suitland Bog, Growing inside the fenced enclosure along the W fence-line

Found in wooded lot behind 10021 Pennfold Ct., Potomac

Patuxent River at Lemons Bridge. 0.5 mi N of Pennsylvania Railroad Bridge

Cape Cod. Ditch under road between Barnstable and cranberry bog

Pena Blanca Lake, Inlet Start