GLANSIS

Hydrocharis morsus-ranae

European frogbit

Collection Information for Hydrocharis morsus-ranae

Results limited to HUC #04290004.
To see the collection list for the entire Great Lakes region, click here.
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 ID	State	County	Locality	Year	HUC Number	Drainage Name	Status
238771	NY	St. Lawrence	Lampsons Falls, near Grasse River	2007	04290004	Grass	established
270265	NY	St. Lawrence	Grasse River, near the Massena International Airport-Richards Field	2006	04290004	Grass	established
888154	NY	St. Lawrence	Grasse River, Lampson Falls	2005	04290004	Grass	established
1728124	NY	St. Lawrence	[No locality description provided]	2021	04290004	Grass
1760176	NY	St. Lawrence	[No locality description provided]	2005	04290004	Grass
1761120	NY	St. Lawrence	[No locality description provided]	2009	04290004	Grass
1761464	NY	St. Lawrence	[No locality description provided]	2009	04290004	Grass
1761965	NY	St. Lawrence	[No locality description provided]	2009	04290004	Grass
1833930	NY	St. Lawrence	[No locality description provided]	2018	04290004	Grass
1833931	NY	St. Lawrence	[No locality description provided]	2018	04290004	Grass
1833979	NY	St. Lawrence	[No locality description provided]	2018	04290004	Grass
1852848	NY	St. Lawrence	[No locality description provided]	2022	04290004	Grass
1856809	NY	St. Lawrence	[No locality description provided]	2023	04290004	Grass

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