Plants densely to loosely cespitose. Rhizomes short to long, internodes 0.2-20 mm. Culms 0.5-1(-1.1) mm wide. Widest leaf blades 1.3-2.9(-3.1) mm wide. Longest inflorescences (33-)40-63(-71) mm. Perigynium beak 0.3-0.42 times as long as perigynium. 2n = 64, 66, 68.

Fruiting spring-early summer. Forested flood plains, wet hardwood forests, hardwood swamps, occasionally wet meadows, marsh edges; 0-500(-1100) m; N.B., N.S., Ont., Que.; Ala., Ark., Conn., D.C., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.; c Mexico.

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

Frequent to common except in the unglaciated area, in wet woods, swamps, and bogs and on borders of ponds and springy banks of streams.

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Indiana Coefficient of Conservatism: C = 10

Wetland Indicator Status: FACW