Also called large-flowered waterweed.

Part of family Hydrocharitaceae.

Native to South America.   🗺 Map by county (🇺🇸 USA-48) (color key).   Invasive > learn+quiz Invasive > 🌐︎ global Invasive > 🇨🇦 🇺🇸 Canada+USA Invasive > report it! Invasive > 🇺🇸 USA Invasive > Michigan prohibited in Michigan, incl. seeds, fragments and derivatives.  Adobe Acrobat Reader file

Uses by native peoples
(Ethnobotany database)
  On No-Planting List by Seneca Nation of Indians SNI.  Adobe Acrobat Reader file (page 61)

Learn more about 🇧🇷 ♒︎ Brazilian water-weed Egeria densa

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Flora of North America NRCS PLANTS db USGS Wikipedia