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You are here: Home / Aquatic Species / Species Profiles / Brazilian Waterweed
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Species Profiles

Brazilian Waterweed

Brazilian WaterweedScientific name: Egeria densa Planch. (ITIS)

Common names: Brazilian waterweed, Brazilian elodea, dense waterweed, leafy elodea

Click image to enlarge

Selected Resources

Native To: South America (Cook and Urmi-König 1984)

Date of U.S. Introduction: 1893 (Cook and Urmi-König 1984)

Means of Introduction: Aquarium trade (Cook and Urmi-König 1984)

Impact: Crowds out native species (Yarrow et al. 2009)

Current U.S. Distribution:

Images:

Selected Resources:

Council or Task Force

Invasive Plants of California's Wildlands - Egeria densa
California Invasive Plant Council.
Bossard, C.C., J.M. Randall, and M.C. Hoshovsky (Editors). 2000. Invasive Plants of California's Wildlands. University of California Press. Berkeley, CA.

Partnership

Pacific Island Ecosystems at Risk (PIER) - Egeria densa
USDA. FS. Institute of Pacific Islands Forestry.

Invasive Plant Atlas of New England (IPANE) - Brazilian Water-weed
University of Georgia. Center for Invasive Species and Ecosystem Health.

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

Brazilian Elodea
Northeast Aquatic Nuisance Species Panel
.

Invasive Species Compendium - Egeria densa
CAB International.

Plantwise Technical Factsheet - Leafy Elodea (Egeria densa)
CABI. Plantwise Knowledge Bank.

Global Invasive Species Database - Egeria densa (aquatic plant)
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Federal Government

U.S. National Plant Germplasm System - Egeria densa
USDA. ARS. National Genetic Resources Program. GRIN-Global.

PLANTS Database - Brazilian Waterweed
USDA. NRCS. National Plant Data Center.

International Government

Weeds in Australia - Dense Waterweed (Egeria densa)
Australian Government. Department of the Environment and Energy.

Weed Profile: Leafy elodea
New South Wales Department of Primary Industries (Australia).

Pest Plant Risk Assessment: Dense Waterweed (Aug 2008; PDF | 319 KB)
Queensland Department of Primary Industries (Australia). Biosecurity Queensland.

State Government

Encycloweedia: Data Sheet - Hydrilla, Brazilian elodea, and Common elodea
California Department of Food and Agriculture.
Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources.

S. American Waterweed: An Invasive Aquatic Plant (2002; PDF | 330 KB)
Massachusetts Department of Conservation and Recreation. Water Resources. Lakes and Ponds Program.

Invasive Plants in Pennsylvania: Brazilian Waterweed (PDF | 540 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plants fact sheets (scroll to view) for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands.

Freshwater Aquatic Invasive Species in Rhode Island: Brazilian Elodea (Sep 2010; PDF | 617 KB)
Rhode Island Department of Environmental Management. Office of Water Resources.

Brazilian elodea
State of Washington. King County Department of Natural Resources. Water and Land Resources Division.

Non-Native Freshwater Plants - Brazilian Elodea
Washington State Department of Ecology. Water Quality Program.

Class B Noxious Weed: Brazilian Elodea
Washington State Noxious Weed Control Board.

Academic

Weed Control in Natural Areas in the Western United States: Brazilian egeria (2013; PDF | 209 KB)
University of California. Weed Research and Information Center.

Aquatic Invader Toolkit - Brazilian Elodea (PDF | 524 KB)
Illinois-Indiana Sea Grant.

Maine Invasive Plants Bulletin: Brazilian Waterweed
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)

AQUAPLANT - Egeria
Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.

Invasive Species Fact Sheets - Brazilian Elodea
University of Wisconsin Sea Grant Institute.

Professional

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

Citations

Cook, C.D. and K. Urmi-König. 1984. A revision of the genus Egeria (Hydrocharitaceae). Aquatic Botany 19(1-2):73-96.

Integrated Taxonomic Information System. Egeria densa. [Accessed Sep 10, 2014].

Yarrow, M., V.H. Marin, M. Finlayson, A. Tironi, L.E. Delgado, and F. Fischer. 2009. The ecology of Egeria densa Planchon (Liliopsida: Alismatales): A wetland ecosystem engineer? Revista Chilena de Historia Natural 82:299-313.

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Last Modified: Sep 17, 2016
 
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