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Cut-and-Paste Reference:
Neel, M. (director), J. Hall (curator), and N. Anderson. 2014. Norton-Brown Herbarium (MARY). University of Maryland, College Park, MD. http://www.nbh.psla.umd.edu/.
Reference Details:
Reference Number: 13276
Type: Database
Author: Neel, M. (director), J. Hall (curator), and N. Anderson.
Date (year): 2014
Title:Norton-Brown Herbarium (MARY)
Publisher:University of Maryland
Publisher Location:College Park, MD
URL: http://www.nbh.psla.umd.edu/
Accessed on:
Created on:
Keywords: Maryland, Myriophyllum, Egeria, Hydrilla, Iris, Spirodela, Nasturtium, Lythrum, Marsilea, Nymphoides, Najas, herbarium
Species Profiles and Specimens that use this Reference:

Aldrovanda vesiculosa

    VA - Lake at Fort A.P. Hill
    VA - Meadowcreek Pond. Fort A. P. Hill TA07A [Training Area 07-Alpha] East of VA State Route 2

Alternanthera philoxeroides

    MD - Duck Pond Park

Callitriche stagnalis

    MD - Beltsville, just SE, in a brook
    MD - National Agricultural Research Center
    MD - Beltsville (Stream?)

Egeria densa

    MD - Green Pond
    MD - Green Pond
    MD - Edge Creek Bar off Alberta Cove
    MD - Blue Pond

Hydrilla verticillata [monoecious]

    MD - Reservoir on Conococheague Run
    MD - Lake Habeeb. Rocky Gap State Park

Iris pseudacorus

    MD - Town of Severna Park, Cypress Creek, bog at the head of creek near Ritchie HWY and Rte 2
    MD - Camp Catoctin, Tower Rd. off Mink Farm Rd, in water near edge of pond
    MD - Vienna, 0.2 mi S of, on Vienna Henry's Crossroad, in marsh adjacent to unnamed tributary to Nanticoke River
    MD - Elk Neck State Park
    MD - Braddock Mtn, pond edge, Rte 5 and US 40A W of Frederick
    DC - Washingtion D.C., inland stream on lower end of Theodore Roosevelt Island
    OH - Tifton, near (entered as Thrifton per CJ)
    CT - The Meadows floodplain of the Connecticut River along Meadow Rd, Rocky Hill nr Wethersfield
    NC - Cranberry, marsh
    VA - Old Dominion car tracks between North Stafford and North Stuart Sta.
    MD - Elliott Island, along Wharf Road, 0.1 miles south of Elliott Island Road, at edge of salt marsh

Landoltia punctata

    LA - cypress swamp/sugar cane field margin, near Kraemer, on LA 307, 2.6mi N of Rte 90
    FL - scrub woodlands along the roadsides and near ponds, Along Co. Rd 17, 0.5 mi S of FL Hwy 70, about 2 miles N of entrance to Archbold Biological Station, S of Lake Placid and N of Venus
    VA - Dillon Marina, cypress swamp along Chicka-hominy River, E of Providence Forge, Rte 1103 (spur of Rte 650)

Lythrum salicaria

    MA - Arnold Arboretum
    MA - Lee, alond W side of Road half way between US Rte 7 and Devon Rd
    NY - Alden, located at SW corner of intersection of US Rte 20 and Two Rod Road
    CT - Stonington, near Mystic, S side Rte 1 near Latimer's Point, near railroad behind UFW building
    ME - Alfred
    RI - Chapman Pond, Chapman Fishing area just E of Rte 78, westerly
    MA - Fowl Meadow, swamp,Canten
    OR - Cheshire, approx. 5 airline miles NW of, along High Pass Rd, 5.2 miles W of its junction with the territorial HWY, in a creek; T15S, R6W, Sec. 35
    MD - Northeast River at Seneca Point, approx. 0.5 miles SW of Charlestown, on sandy beaches and under the deciduous forest canopy immediately adjacent to the beach
    MD - swamp at border of North East River, North East Heights
    MD - Marks Wildlife Management Area

Marsilea mutica

    SC - Medinah Drive half block from Silver Bluff Road, Aiken

Murdannia keisak

    GA - High Falls State Park, a mile and a half off I-75 at exit 65, on High Falls Rd, on Pioneer Point on edge of lake
    SC - Chau-Ram County Park, Westminster, Rte 76, confluence of Chauga River and Ramsey Creek
    MD - alluvial swamp just North of Patuxent River at Brock Bridge Rd, just N of the river near a suburban airport
    MD - Cheltenham Wetlands Park (Acres Recreational Park?), Piscataway Creek at the Commo Rd bridge
    SC - Coneross Creek, ca. 2000 ft from existing dam to the power station (below power station)

Myriophyllum aquaticum

    LA - Bayou de Siard, margins of; along US 165, 0.7mi S of jct of LA 134 and US 165; Sec. 16, T19N, R4E
    MD - Furnace Creek, W of Richie Hwy, NE of Glen Burnie
    NC - Pond on McLawhorn Farm, Co. RT. 1704, 0.5 miles E of US 264 by-pass
    MD - Aberdeen, 3 mi E, ditches along Rte 40

Myriophyllum spicatum

    MD - Delario Bay, Worton Creek Spit
    MD - Betterton, mouth of Sassafras River
    MD - Seven Locks, Chesapeake and Ohio Canal
    MD - Chesapeake and Ohio Canal, 1 mi N or Cabin John
    MD - Muirkirk, Twin Ponds
    MD - Muirkirk, Twin Ponds
    MD - Wicomico River, S bank off second point above buoy C13
    MD - Wicomico River, mouth of; St. Catherine's Sound
    MD - Choptico Bay, S side, near jct with Wicomico River
    MD - Venice on the Bay, small barrier pond, SE of Fort Smallwood on Patapsco River
    MD - Saltpeter Creek at tributary to Gunpowder River
    MD - Junction of Saltpeter Creek and Gunpowder River
    MD - Biddison's landing on Dundee Creek (near head), a tributary to Gunpowder River
    MD - Allens Fresh, near eastern most of 2 Hwy bridges
    MD - Wicomico River, near west Hatton point
    MD - Allens Fresh, near eastern end of two HWY bridges
    MD - Allens Fresh
    MD - Allens Fresh
    MD - Herring Creek, a cove, near Tall Timbers
    MD - Lowes Point, salt marsh, 10 mi W of St. Michaels
    NC - Alligator River, Ft. Landing
    GA - Lake Seminole, Island Point Access Area
    MD - Town Creek
    MD - Town Creek
    MD - Town Creek
    MD - Lagoon of Potomac River near base of Peninsula, near Prince Georges County line
    MD - Chesapeake Bay at Andelot Farm Andelot Farm near Worton

Najas minor

    MD - Patuxent River at Route 4 bridge, Waysons Corner near Mill Creek
    MD - Lake Habeeb. Rocky Gap State Park
    MD - Town Creek
    MD - Bohemia River. Kayak put-in on the Bohemia River beside the bridge
    MD - Elk River near the boat ramp at Elk Neck State Park
    MD - Lake Artemesia

Nasturtium officinale

    MD - Baltimore, ditch southwest of city
    MD - creek that is adjacent to Lanberton Dr., 200 ft before road ends [Silver Spring]
    MD - Woodend Nature Center, Chevy Chase
    MD - Chevy Chase, dead end of Susanna Lane near a freshwater spring
    MD - Patapsco State Park, Abrutus, stream
    MD - Owen's Creek at Eagle Int.
    MD - Owen's Creek, near Thurmont, south from Eagle Mtn, Catoctin Mtns
    MD - Hood College Campus
    MD - Chewsville, creek bottom
    MD - roadside ditch, Rt. 144 SE of Orchard Rd
    NC - Nantahala Gorge, Beechertown on US19
    NC - UNC campus, marshy area near a small creek behind Hinton James dorm
    CT - Collier Swamp, Wethersfield, S end, near golf course, off Collier Rd
    MA - Gay Head, on state road 1/4 mi past the town line
    MI - Indian River
    MD - Potomac River, at Great Falls
    MD - College Park, along stream

Nitellopsis obtusa

    MI - Upper Crooked Lake
    NY - Lake Ontario, Association Island Marina
    NY - Keuka Lake Outlet canal
    MI - Gunn [Gun] Lake
    MI - Gull Lake

Potamogeton crispus

    NV - Truckee River, small associated canal, under bridge of US HWY 40, SE of Wadsworth
    MD - In the C. and O. Canal across from Herzog Island
    MD - Chesapeake Bay at Andelot Farm Andelot Farm near Worton
    MD - Elk River near the boat ramp at Elk Neck State Park
    MD - Gunpowder Falls Sweet Air Area. Little Gunpowder Falls Branch

Salvinia minima

    FL - Co Rd 17, 0.5 mi S of FL Hwy 70, about 2 mi N of entrance of Archbold Biological Station, S of Lake Placid and North of Venus

Trapa natans

    VA - Potomac River, S of Alexandria
    MD - Urieville Mill Pond


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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2019]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/7/2019].

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