Scirpus Debilis Pursh, p. 158

31 Scirpus debilis, Pursh.

Culms slender, striate, with naked sheaths and sometimes one leaf at the base; spikes 3 to 8 ovoid, in a sessile clustre; involucre one leaved extending above the spikes like a prolonged culin; scales broadly ovate, obtuse mucronate, greenish yellow; styles 2 or 3 cleft; achenium obovate, plano-convex or lenticular, shining, minutely dotted, shorter than the 4 to 6 bristles: Culms 6 to 15 inches high. Flowers in [crossed out] July.

Banks of lakes and streams. Illinois, and Michigan. Extends south to Georgia.

[Variety from St. Louis-May be same in Ill?](2)