196 WEEDS AND USEFUL PLANTS. 
Root biennial. Stem 2-4 feet high, branched, chr aarween hairy, winged by the de- 
current leaves. Leaves 4-8 or 12 inches long. ” He inal, erect, about an fond in 
diameter ; scales of the involucre connected by a cobweb ike villus. Florets purple, with 
yellowish anthers. compat small ,obovatesbong ; out an inch long, way 
Pastures, fence-rows, ay-sides, &c.: cribern and fiddle ‘States : introduced. Neji? 
of Europe. #1. June- ddiy, Fr. July - i i ugus' 
Obs. This foreigner, which deli cent ta a rich soil, is sbandanty nat- 
uralized in the Northern States, generally. ‘Tho ough n o repulsive 
* ; 
atte! i 
its fruit, the spreading pappus may be seen, by hundreds, floating the 
enes through the air, and disseminating the noxious intruder far and 
wide. 
** Scales of the involucre appressed ; the inner ones not prickly: filaments 
ary. 
{ Leaves white, woolly beneath. 
2. C. dis’color, Spreng. Leaves deeply pinnatifid, SDAA hairy and 
green above, densely hoary-tomentose benea e segments linear- 
popeciots, cuspidate and Gadindopercttinies ; involucre ovoid-oblong ; 
appressed, t ipped with a slender prickle—the 0 outer or lower scales 
Eossavets, the inner or upper ones linear-lanceolate 
TWo0-COLORED pila 
Root biennial. ect high, with gard slender eevee leafy branches 
striate, eeoes ent -— ~ Menger by pot hair: Leaves 3 or 4-12 me wt mr long 
(those on the branches small), the under su ace bluis h-white with a 
Heads 1-2 inches long, and an inch vat ae e in . diameter ; oct 
noid-villous. Florets reddish-purple, ith whi 
lds and borders of thickets : Northern and Western States. Fl. Aug.—Sept. Py. 
Sept. - October. 
. Like all others of the genus, this is a sb ahope oo obnoxious weed, 
but is much easier kept in subjection than the preceding. 
t Leaves green on both sides, or with loose woolly * beneath ; scales of 
the ini pc y prickly poin 
s ‘mil Spreng. Leaves semi-am acre innatifid, green 
3. pumilum, Syren ts short, irregularly es spiralone-cilinte and 
nae Ww arp spines; heads few and large, roundish-ovoid, 
; ; Scales = the involucre appressed—the outer 
, acuminate, tipped with a kort spine, the inner 07 nes lance- 
lanceolate 
linear with ps scarious serrulate tips. 
Low ox Dwarr Cirsium. Pasture Thistle. 
Plant pale greyish green. Root biennial aa eyo sept stout, sparingly branched, 
Striate, cacoenaie pilose. Leaves 4~ very a ickly, more 1 arog te hairy, 
densel, yo Seregh on the midrib beneath. Hands jad wd -3), often near 2 ros. in diameter, 
mostly with large pinnatifid spinose Flores often 2 inches in length, 
usually of 2 as reddish-purple, with whitish ante ane 
_ Neglected old fields and low grounds Middle and Northern States. FI, July... Fr 
