Also called Esthwaite waterweed and waterthyme.

Part of family Hydrocharitaceae.

Native to 🇪🇺 Europe, Asia, Africa and 🇦🇺 Australia.   🌎︎ Map by county (🇺🇸 USA-48) (colors).   Invasive > learn+quiz Invasive > 🌐︎ global Invasive > 🌐︎ various Invasive > 🇨🇦+🇺🇸 Canada+USA Invasive > report it! Invasive > 🇺🇸 USA Invasive > Michigan prohibited in Michigan, incl. seeds, fragments and derivatives  Adobe Acrobat Reader file   On No-Plant List by Seneca Nation of Indians.  Adobe Acrobat Reader file (page 62)

🚼︎ For kids!  This plant described in invasive species placemat  Adobe Acrobat Reader file series.

Learn more about hydrilla Hydrilla verticillata

Biological Control in Eastern USA  Adobe Acrobat Reader file (page 99)

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