| Brazilian egeria |
USDA PLANTS Symbol: EGDE USDA ARS GRIN: 400175 ITIS: 38972 NAPIS: PCHAGBA |
| Egeria densa Planch. | |
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Taxonomic Rank: Liliopsida: Hydrocharitales: Hydrocharitaceae |
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| Synonym(s): Brazilian waterweed, Brazilian elodea, South American waterweed | |
Brazilian egeria is a submersed aquatic plant that invades freshwater systems throughout much of the United States. The finely serrated leaves are usually less than 1 in. (2.5 cm) long and occur in whorls of 3-6. The flowers, which bloom above the surface of the water, are white with three petals. Often confused with hydrilla, Brazilian egeria has a smooth midrib on the underside of the leaf, whereas hydrilla has small teeth. Brazilian egeria invades both still and flowing water ecosystems including lakes, ponds, ditches, and rivers. It can form dense stands that crowd out native vegetation and reduce the area's value as fish habitat. It can also interfere with recreational activities such as fishing and swimming. Brazilian egeria was first introduced into the United States in the late 1800s as an aquarium plant. |
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Identification, Biology, Control and Management Resources
- Global Invasive Species Database - Invasive Species Specialist Group
- Invasive Plant Atlas of New England - University of Connecticut
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Flower(s); Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
 Foliage; Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
 Foliage; Leaf whorl Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
 Twig(s)/Shoot(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Ann Murray, University of Florida, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; combination of Egeria densa and Egeria najas; predominantly Egeria densa William T. Haller, University of Florida, Bugwood.org Additional Resolutions & Image Usage |
Taxonomic References:
- USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Invasive Listing Sources:
- Connecticut Invasive Plant Working Group
- Delaware Natural Resources and Environmental Control, 2004
- Faith Campbell, 1998. Plants that Hog the Garden: Invasive Plants in the United States. Fine Gardening Online
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Mid-Atlantic Exotic Pest Plant Council, 2005
- New Hampshire Invasive Species Committee. 2005. Guide to Invasive Upland Plant Species in New Hampshire. New Hampshire Department of Agriculture, Markets and Food Plant Industry Division and New Hampshire Invasive Species Committee.
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Vermont Department of Environmental Conservation,
- Virginia Department of Conservation and Recreation, 1999.
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Alabama Noxious Weeds Class C Noxious Weed
- California Invasive Plant Council
- California Noxious Weeds
- Connecticut Noxious Weeds
- Apalachicola Invasive Working Group
- Georgia Exotic Pest Plant Council Category 2
- Idaho Noxious Weeds
- Indiana Noxious Weeds
- Massachusetts Noxious Weeds
- Maine Noxious Weeds
- Oregon Noxious Weeds
- South Carolina Noxious Weeds
- Tennessee Exotic Pest Plant Council Lesser Threat
- Vermont Noxious Weeds
- Washington Noxious Weeds
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