COMPOSITE. (COMPOSITE FAMILY.) 243 
2. C. Pitclieri, Torr. & Gr. (Pitcher’s Thistle.) White- 
woolly throughout , low; stem stout, very leafy; leaves all pinnaiely 
parted into rigid narrowly linear and elongated divisions , with revolute 
margins; flowers cream-color. 1J. — Sandy shores of L. Huron and 
Michigan. 
3. C. undulatum, Spreng. (Woolly Thistle ) mite- 
woolly throughout , low and stout, leafy ; leaves lanceolate-oblong , part¬ 
ly clasping, undulate-pinnatifid , with prickly lobes ; flowers reddish- 
purple. Islands of L. Huron and Michigan, thence westward. 
July. 
4. C. discolor, Spreng. (Two-colored Thistle.) Stem 
grooved, hairy, branched, leafy ; leaves all deeply pinnatifid, sparingly 
hairy and green above, whitened with close wool beneath , the diverging 
lobes 2-deleft, linear-lanceolate, prickly-pointed; flowers pale purple. 
(D —Meadows and copses, not uncommon. Aug. — Plant 3°-6° 
high : heads V or more in width. / 
5. €. siltissimiim, Spreng. (Tall Thistle.) Stem downy, 
branching, leafy to the heads; leaves roughish-hairy above, whitened 
with close wool beneath, oblong-lanceolate, sinuate-toothed , undulate- 
pinnatifid, or undivided, the lobes or teeth prickly, those from the base 
pinnatifid; lobes short, oblong or triangular; flowers chiefly purple. 
^ ? — Fields and copses, Penn, to Ohio, &c. Aug. — Plant 3° - 10° 
high: leaves variable: the heads much as in the last. 
6. C. Virginianum, Michx. (Small Thistle.) Stem 
woolly, slender, simple or sparingly branched, the branches or long 
peduncles naked; leaves lanceolate , green above, whitened with close 
wool beneath, ciliate with prickly bristles, entire or sparingly sinuate- 
lobed , sometimes the lower deeply sinuate-pinnatifid ; outer scales of 
the involucre scarcely prickly ; flowers purple. — Woods and plains, 
Ohio and southward. July.-Plant 1°-3P high ; the heads seldom 
more than half as large as in the last. 
~~ Leaves green both sides, or with loose webby hairs underneath: 
scales of the involucre scarcely prickly-pointed. 
7. C. rn.lticu.il, Michx. (Swamp Th.stle.) Stem tall, an¬ 
gled, smoothish, panicled at the summit, the branches sp>m«^y km* 
and bearing single or few naked heads; leaves somewhat ha ry above, 
whitened with loose webby hairs beneath when young, deeply P •"»■*£ 
the divisions lanceolate, acute, cut-lobed, pr.ckly-po.nted; 
webby and glutinous involucre closely oppressed potntless or barely 
mucronate ; flowers purple. U - Swamps and low copses, common. 
Aug. — Plant 3P-8P high : heads rather large. 
8. C. pumilnm, Spreng. (Pasture Thistle.) 
stout, hairy, bearing 1-3 very large heads whic are some 
bracted at the base ; leaves lanceolate-oblong, partly claspi g, g 7 
