Ceratophyllum demersum Linnaeus. Coontail. Phen: May-Sep. Hab: Ponds, pools, slow-moving streams. Dist: NL (Newfoundland) west to AK, south to s. FL, TX, CA, and south through the West Indies and Mexico and Central America to South America.

Origin/Endemic status: Native

Synonymy: = Ar, C, F, FNA3, G, GrPl, GW2, Il, K1, K3, K4, Mex, Mi, NcTx, NE, NY, Pa, RAB, S, S13, Tat, Tn, Tx, Va, W, WH3, Les (1985), Les (1986), Les (1988a), Les (1988b), Les (1988c), Les (1989), Szalontai et al (2018), Wilmot-Dear (1985)

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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