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You are here: Home / Aquatic Species / Species Profiles / Water Chestnut
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Species Profiles

Water Chestnut

Water ChestnutScientific name: Trapa natans L. (ITIS)

Common names: Water chestnut, water nut, water caltrop

Click image to enlarge

Selected Resources

Native To: Eurasia (Fofonoff et al. 2003)

Date of U.S. Introduction: 1800s (Fofonoff et al. 2003)

Means of Introduction: Ornamental (Fofonoff et al. 2003)

Impact: Crowds out native species (Fofonoff et al. 2003)

Current U.S. Distribution:

Images:

Videos:

Selected Resources:

Partnership

Invasive Plant Atlas of New England (IPANE) - Water chestnut, European water chestnut
University of Georgia. Center for Invasive Species and Ecosystem Health.

Invasive Plant Atlas of the United States - Water Chestnut
University of Georgia. Center for Invasive Species and Ecosystem Health.

New York Invasive Species Information - Water Chestnut
New York Invasive Species Clearinghouse.

Water Chestnut
Northeast Aquatic Nuisance Species Panel
.

Invasive Species Compendium - Trapa natans
CAB International.

Global Invasive Species Database - Trapa natans (aquatic plant)
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Federal Government

Nonindigenous Aquatic Species Database: Fact Sheet - Water Chestnut
DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).

Germplasm Resources Information Network (GRIN) - Trapa natans
USDA. ARS. National Genetic Resources Program.

PLANTS Database - Water Chestnut
USDA. NRCS. National Plant Data Center.

Water Chestnut
DOI. FWS. Connecticut River Coordinator's Office.

National Exotic Marine and Estuarine Species Information System (NEMESIS): Chesapeake Bay Introduced Species Database - Trapa natans
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.

Weed Alert: Water caltrop
New South Wales Department of Primary Industries (Australia). Agriculture.

Fact Sheet: European Water Chestnut (PDF | 410 KB)
Ontario Ministry of Natural Resources (Canada).

State Government

Aquatic Invasive Species: Water Chestnut (May 2005; PDF | 96 KB)
Indiana Department of Natural Resources.

Water Chestnut
Maryland Department of Natural Resources.

Water Chestnut: An Exotic Invasive Aquatic Plant (PDF | 1.69 MB)
Massachusetts Department of Conservation and Recreation.

Water Chestnut Discovered in New Hampshire Waters - Environmental Fact Sheet (2010; PDF | 746 KB)
New Hampshire Department of Environmental Services.

Invasive Plants in Pennsylvania: European Water Chestnut (PDF | 107 KB)
Pennsylvania Department of Conservation and Natural Resources.

AIS Action Plan: Water Chestnut (Jun 2011; PDF | 130 KB)
Pennsylvania Fish and Boat Commission.

Freshwater Aquatic Invasive Species in Rhode Island: Water Chestnut (Oct 2010; PDF | 789 KB)
Rhode Island Department of Environmental Management. Office of Water Resources.

Aquatic Invasive Species in Vermont - Water Chestnut
Vermont Agency of Natural Resources. Environmental Conservation. Watershed Management Division.

Water Chestnut
Wisconsin Department of Natural Resources.

Academic

Weed Control in Natural Areas in the Western United States: Water Chestnut (2013; PDF | 279 KB)
University of California. Weed Research and Information Center.

Maine Invasive Plants Bulletin: Water Chestnut
University of Maine. Cooperative Extension.
See also: Maine Invasive Plants & Entire Series for entire series of 22 fact sheets and invasive plants brochure (available in HTML/PDF or for purchase)

Aquatic Invasive Species in the Chesapeake Bay - Water Chestnut (Sep 2013; PDF | 101 KB)
Maryland Sea Grant.

Introduced Species Summary Project - Water Chestnut
Columbia University. Center for Environmental Research and Conservation.

Water Chestnut (Trapa natans) in the Northeast (Feb 2006; PDF | 350 KB)
New York Sea Grant.

European Water-chestnut (PDF | 271 KB)
University of Pennsylvania. Morris Arboretum.

Invasive Species Fact Sheets - Water Chestnut
University of Wisconsin Sea Grant Institute.

Professional

Maine's Interactive Field Guide to Aquatic Invaders and Their Native Look Alikes - Water Chestnut
Maine Volunteer Lake Monitoring Program.

Citations

Fofonoff, P.W., G.M. Ruiz, B. Steves, A.H. Hines, and J.T. Carlton. 2003. Trapa natans. In: National Exotic Marine and Estuarine Species Information System: Chesapeake Bay Introduced Species Database. [Accessed Sep 16, 2014].

Integrated Taxonomic Information System. Trapa natans. [Accessed Sep 10, 2014].

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Last Modified: Jun 16, 2016
 
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