Common name: Horsetail, Scouring rush
U.S. Distribution: Throughout
Height: 12- 18 in.
Foliage: Small, scalelike, whorled leaves forming sheaths at the joints with black tips
Fruiting heads: Terminal cones containing masses of spores
Habitat: Stream or road embankments, moist fields and meadows
Soil: Wet sandy or gravelly soils
Other: Poisonous to horses and cattle, causes "equisetosis".
Cells contain large amounts of silica. Used in colonial times for scouring
dishes and butter churns (scouring rush), also once used by cabinet makers
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