Specimen Information

Pistia stratiotes
Pistia stratiotes
(water lettuce)
Plants
Cryptogenic

Specimen ID1885953
GroupPlants
GenusPistia
Speciesstratiotes
Common Namewater lettuce
StateIN
CountyLake
LocalityMarquette Lagoon East Basin
Mapping AccuracyAccurate
HUC8 NameLittle Calumet-Galien
HUC8 Number04040001
HUC10 NameCalumet River-Frontal Lake Michigan
HUC10 Number0404000106
HUC12 NameCity of Gary-Grand Calumet River
HUC12 Number040400010604
Map
Collection Day25
Collection Month8
Collection Year2025
Year AccuracyActual
CommentsThe 7 plants were all in one cluster with intertwined roots at the kayak launch. No other plants were observed in the immediate area. When time permits, an expanded search will occur using a kayak.
Record TypeNAS sighting report
VerifierIan Pfingsten
Number Collected7
Photo
Pistia stratiotes with Nuphar sp.


Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/21/2026].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.