Scirpus Polyphyllus Vahl, p. 161

[33] 34. Scirpus polyphyllus, Vahl.

Syn. S. exaltatus Ph. S. brummeus, Muhl.

Culm rigid, sharply triangular above, very leafy; umbel cynose-decompound, the spikes clustered in heads of 3 to 8, ovoid, cylindrical with age, yellowish-brown; bristles 6 pubescent downwards, somewhat crisped, nearly twice the length of the achenium. Culms 2 to 6 feet high. Flowers in July.

In wet shady places. Illinois, Indiana, Ohio, and Michigan. Extends eastward to West New England, and south to Kentucky.