| Brazilian egeria | USDA PLANTS Symbol: EGDE U.S. Nativity: Exotic Habit: Aquatic |
| 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 | |
| Native Range: S. America (BAIL); | |
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
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| 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 |
| EDDMapS Distribution: This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org |
 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. |
| U.S. National Parks where reported invasive: |
| Colonial National Historical Park (Virginia) |
