Phyllodia to 1 cm wide. Inflorescences racemes; pistillate pedicels 0.5--3 cm. 2n = 22.

Flowering summer--fall. Streams, lakes, and tidal areas; 0--700 m; N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que.; Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., Wash., W.Va., Wis.; West Indies (Cuba).

From Flora of Indiana (1940) by Charles C. Deam

Infrequent in a part of the lake area and local southward. This species is usually found in shallow water or in very wet places about lakes, ponds, and artificial ponds and in ditches.

……

Indiana Coefficient of Conservatism: C = 9

Wetland Indicator Status: OBL