Ceratophyllum demersum Linnaeus. Common name: Coontail. Phenology: May-Sep. Habitat: Ponds, pools, slow-moving streams. Distribution: 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, Can, F, FNA3, G, GrPl, GW2, Il, K4, Mex, Mi, NcTx, NE, NS, 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); > Ceratophyllum demersum L. var. apiculatum (Cham.) Asch. — POWO; > Ceratophyllum demersum var. demersum — POWO. Basionym: Ceratophyllum demersum L. 1753

Links to other floras: = Ceratophyllum demersum - FNA3

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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