Hydrocharis morsus-ranae

European frogbit

Collection Information for Hydrocharis morsus-ranae

Results limited to All Great Lakes Drainages.
To see the collection list for the entire United States, click here.
 Results also available in (click to export table to spreadsheet)

(click table headers to sort)
Specimen IDStateCountyLocalityYearHUC NumberDrainage NameStatus
1890306ONT [No locality description provided]202504090002Lake St. Clair 
1892458ONT [No locality description provided]202504220002Lake Muskoka-Frontal Lake Huron 
1740494ONT [No locality description provided]202204220003Severn River-Lake Simcoe 
1748161ONT [No locality description provided]202204220003Severn River-Lake Simcoe 
1748179ONT [No locality description provided]202204220003Severn River-Lake Simcoe 
1891133ONT [No locality description provided; coordinates obscured by collector]202504220003Severn River-Lake Simcoe 
1891269ONT [No locality description provided]202504220003Severn River-Lake Simcoe 
1891077ONT [No locality description provided; coordinates obscured by collector]202504220004Nottawasaga River-Frontal Lake Huron 
1891172ONT [No locality description provided; coordinates obscured by collector]202504230002Bruce Peninsula-Frontal Lake Huron 
1746941ONT [No locality description provided]202104230006Ausable River-Frontal Lake Huron 
1890248ONT [No locality description provided]202504230006Ausable River-Frontal Lake Huron 
1891123ONT [No locality description provided]202504230006Ausable River-Frontal Lake Huron 
1891584ONT [No locality description provided]202504230006Ausable River-Frontal Lake Huron 
1699385ONT [No locality description provided]202104250001Cedar Creek-Frontal Lake Erie 
1699864ONT [No locality description provided]202104250001Cedar Creek-Frontal Lake Erie 
1700174ONT [No locality description provided]202104250001Cedar Creek-Frontal Lake Erie 
1699387ONT [No locality description provided]202104280002Lake Ontario 
1701761ONT [No locality description provided]202204270205Trent River 
1701771ONT [No locality description provided]202204280001Prince Edward County-Frontal Lake Ontario 
1700590ONT [No locality description provided]202204270205Trent River 
1706627ONT [No locality description provided]202204280001Prince Edward County-Frontal Lake Ontario 
1698292ONT [No locality description provided]202204250002Talbot Creek-Frontal Lake Erie 
1701317ONT [No locality description provided]202204250003Big Creek-Frontal Lake Erie 
1701073ONT [No locality description provided]202204270204Otonabee River 
1698545ONT [No locality description provided]202204260000Lake Erie 
1730455ONT [No locality description provided]202204270203Kawartha Lakes 
1738165ONT [No locality description provided]202204260000Lake Erie 
1738175ONT [No locality description provided]202204260000Lake Erie 
1747069ONT [No locality description provided]202104270105Ganaraska River-Frontal Lake Ontario 
1747077ONT [No locality description provided]202104270203Kawartha Lakes 
1747246ONT [No locality description provided]202104250001Cedar Creek-Frontal Lake Erie 
1747278ONT [No locality description provided]202104250002Talbot Creek-Frontal Lake Erie 
1747314ONT [No locality description provided]202104270204Otonabee River 
1747861ONT [No locality description provided]202204250004Upper Grand River 
1748167ONT [No locality description provided]202204270107Napanee River-Frontal Lake Ontario 
1748487ONT [No locality description provided]202204270203Kawartha Lakes 
1749032ONT [No locality description provided]202204250001Cedar Creek-Frontal Lake Erie 
1749034ONT [No locality description provided]202204250001Cedar Creek-Frontal Lake Erie 
1749035ONT [No locality description provided]202204250001Cedar Creek-Frontal Lake Erie 
1890274ONT [No locality description provided]202504250001Cedar Creek-Frontal Lake Erie 
1890338ONT [No locality description provided]202504250001Cedar Creek-Frontal Lake Erie 
1890624ONT [No locality description provided]202504250003Big Creek-Frontal Lake Erie 
1890811ONT [No locality description provided]202504250004Upper Grand River 
1891607ONT [No locality description provided]202504250001Cedar Creek-Frontal Lake Erie 
1892276ONT [No locality description provided]202504250001Cedar Creek-Frontal Lake Erie 
1892557ONT [No locality description provided]202504250001Cedar Creek-Frontal Lake Erie 
1892570ONT [No locality description provided]202504270104Humber River-Frontal Lake Ontario 
1893318ONT [No locality description provided]202504250003Big Creek-Frontal Lake Erie 
1701556ONT [No locality description provided]202204280001Prince Edward County-Frontal Lake Ontario 
1748526ONT [No locality description provided]202204280001Prince Edward County-Frontal Lake Ontario 
1749544ONT [No locality description provided]201804270203Kawartha Lakes 
1808979ONT [No locality description provided]201304280002Lake Ontario 
1809006ONT [No locality description provided]201104270107Napanee River-Frontal Lake Ontario 
1889990ONT [No locality description provided]202504270205Trent River 
1890253ONT [No locality description provided]202504270203Kawartha Lakes 
1890421ONT [No locality description provided]202504270203Kawartha Lakes 
1890635ONT [No locality description provided]202504270105Ganaraska River-Frontal Lake Ontario 
1890661ONT [No locality description provided]202504270203Kawartha Lakes 
1890803ONT [No locality description provided]202504270201Scugog River 
1890821ONT [No locality description provided]202504270106Moira River-Frontal Lake Ontario 
1891074ONT [No locality description provided]202504270106Moira River-Frontal Lake Ontario 
1891092ONT [No locality description provided]202504270205Trent River 
1891150ONT [No locality description provided]202504270203Kawartha Lakes 
1891523ONT [No locality description provided]202504270203Kawartha Lakes 
1891789ONT [No locality description provided]202504270106Moira River-Frontal Lake Ontario 
1891886ONT [No locality description provided]202504270203Kawartha Lakes 
1891897ONT [No locality description provided]202504280002Lake Ontario 
1891905ONT [No locality description provided]202504270203Kawartha Lakes 

Citation for this information:
U.S. Geological Survey, 2025, Hydrocharis morsus-ranae: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/20/2025