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
Wetland Indicator Status:
Heliophily: 8
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