AQUAPLANT - Egeria
https://aquaplant.tamu.edu/plant-identification/alphabetical-index/egeria/
Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.
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Early Detection & Distribution Mapping System (EDDMapS) - Brazilian Waterweed
https://www.eddmaps.org/distribution/usstate.cfm?sub=3019University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
Invasive Plant Atlas of the United States - Brazilian Waterweed
https://www.invasiveplantatlas.org/subject.html?sub=3019University of Georgia. Center for Invasive Species and Ecosystem Health.
Nonindigenous Aquatic Species Database: Point Map - Brazillian Waterweed
https://nas.er.usgs.gov/viewer/omap.aspx?SpeciesID=1107DOI. USGS. Wetland and Aquatic Research Center.
Provides detailed collection information as well as animated map.
PLANTS Database - Brazilian Waterweed
https://plants.usda.gov/home/plantProfile?symbol=EGDEUSDA. NRCS. National Plant Data Center.
Weed Control in Natural Areas in the Western United States: Brazilian egeria
2013PDF209 KBhttps://wric.ucdavis.edu/information/natural%20areas/wr_E/Egeria.pdfUniversity of California. Weed Research and Information Center.
See also: Weeds in Natural Areas for more information sheets