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Potamogeton illinoensis Morong. Illinois Pondweed. Phen: Apr-Sep. Hab: Calcareous waters of rivers, streams, lakes, and ponds, spring-fed ponds, spring-fed branches and rivers, sawgrass sloughs, interdune ponds and marshes. Dist: QC west to NT and s. BC, south to s. FL, TX, CA, Mexico, and Central America.

Origin/Endemic status: Native

Synonymy ⓘ: = AqW, Ar, C, ETx1, F, FNA22, G, GrPl, GW1, Il, K1, K3, K4, Meso6, Mi, Mo1, NcTx, NE, NY, Pa, RAB, SFla, Tn, Tx, Va, W, WH3, WV, Wiegleb & Kaplan (1998); > Potamogeton angustifolius Bercht. & C.Presl – S, S13; > Potamogeton heterophyllus Schreb. – S, S13; > Potamogeton lucens L. – S, S13, misapplied

Links to other floras: = Potamogeton illinoensis - FNA22

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 8

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image of plant© Mark Eanes, some rights reserved (CC BY), uploaded by Mark Eanes source CC-BY | Original Image ⭷ Warning: was NOT research grade.
image of plant© mfeaver, some rights reserved (CC BY), uploaded by mfeaver source CC-BY | Original Image ⭷
image of plant© Bonnie Semmling, some rights reserved (CC BY), uploaded by Bonnie Semmling source CC-BY | Original Image ⭷
image of plant© Mark Eanes, some rights reserved (CC BY), uploaded by Mark Eanes source CC-BY | Original Image ⭷ Warning: was NOT research grade.
image of plant© Summit Metro Parks, some rights reserved (CC BY), uploaded by Summit Metro Parks source CC-BY | Original Image ⭷ Warning: was NOT research grade.
image of plant© Summit Metro Parks, some rights reserved (CC BY), uploaded by Summit Metro Parks source CC-BY | Original Image ⭷ Warning: was NOT research grade.
image of plant© Bonnie Semmling, some rights reserved (CC BY), uploaded by Bonnie Semmling source CC-BY | Original Image ⭷
image of plant© Court Harding, some rights reserved (CC BY), uploaded by Court Harding source CC-BY | Original Image ⭷

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