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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.
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
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 peregrina

    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 marina

    MI - Silver Lake. At boat launch

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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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/24/2024].

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