47 
EQUISETUM ARYENSE. Linx^us. 
( Corn or Field Horse Tail.) 
SYXOXYMES. 
The present name is generally adopted. 
DESCRIPTIOX. 
Fertile Stems, appear about March, are simple, about 
eight inches high, and pale brown. Sheaths with about 
ten teeth and tipped with dark bro^vn spring from each 
joint. At the end is the 
Spike, about one inch long, with fructification of the kind 
and arrangement as the E. Telmateia. 
Barren Stems appear after the fertile, are bright green 
when young, and from six inches to two feet high, with 
simple or forked whorls of branches springing from each 
joint. The teeth of the stem joints varying in number, 
those of the branches usually four. 
This plant spreads rapidly and is difficult to eradicate, 
therefore should be introduced with gi’eat caution amongst 
ferns, its matted and much branched roots in some instances 
destroying other plants. 
USES. 
Parkins on says “ countrey huswives doe use any of these 
rough sorts that are next at hand to scoui’e their woodden, 
