Scirpus Eriophorum Michaux, p. 163
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36. Scirpus eriophorum Michaux
Syn. Eriophorum cyperum Linn. S. thyrsiflorus Willd. S. cyperinus Kunth. Trichophorum cyperinum Pers. Wool-grass.
Leaves narrowly linear, long, rigid, those of the involucre 3 to 5, longer than the decomposed cymose=paniclled umbel; spikes ovate clustered sometimes pedicelled, wooly at maturity; the rusty colored bristles much longer than the pointless scales; achenium short-pointed. Culms 2 to 5 feet high, nearly terete, very leafy. Flowers in July.
Moist grounds, borders of marshes &c. Throughout Wisconsin; also in Illinois, Indiana, Ohio, Michigan, and about Lake Superior. Extends south to Florida.
Pl. 1 fig. 12; a, the spike; b, a flower; c the scale; d, ripe achenium and bristles.
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