CARDUACEAE 1449 
5-6 mm. long: achene pu winged, elliptic-obovate, bout 4 mm. long.— 
Rocky POT N Ala.—Sum 
13. C. latifolia Michx. Plant 9-15 dm. tall, pubescent or glabrate: leaf- 
blades ovate to ovate- lanceolate, coarsely toothed: outer involucral bracts 
rots linear, about ong: achene wingless, narrowly ee about 
7 mm. long.— Se ooded Eng oe Ridge, N. C. and Tenn.—Sum 
14. C. tinctoria L. Plant 6-12 dm. tall, glabrous: blades of d lower 
leaves twice pinnately parted, the lobes linear ar i or line oute 
involucral ovd E is -lanceolate, abou ong: a ne ` linear- 
md about 2 . long.—Moist soil, prairies, e "delis, various provinces, 
La. to Ariz., Sask., and Minn. ; also cult. and naturalized eastward — Sum.- fall. 
C. Drummondii (D. Don) T. = G. ag t 2-4 Ren je ll pubescent or 
nearly glabrous: pss of the lower leaves ovate, oval, or lanceolate, fre- 
rigid entire, or like the upper ones with elliptic or "incus Dunt "lobes 
(or with very narrow lobes in C. Drummond Wrightii): d Pared 
bises ies Med 9-0 mm. long: achene boue about 2 lon 
Dry soil and sandy prairies, Tex., also Eie from CU Iam poii um 
—Sum 
16. C. rosea Nutt. Plant 2-5 dm. tall, glabrous: leaf-blades linear and 
scale or ipd 2 or 3 linear lobes: nc bracts of the ra ang lanceolate, 2-3 
ong: achene wingless, narrowly elliptic, about . long. —Moist, or 
ree acid soil, o Plain, and occasionally other erus Ga. to Mas 
d E Ten 
o yi (DC.) T. & G. Plant 2-5 dm. tall, glabrous: blades 
of th r leaves once or twice pinnately divided into elliptic or linear- 
Dach D blades of the upper pe dis few-lobed or entire and lin 
outer involucral bracts lanceolate, 3—4 long: achene eer "2. 0-9 mm 
long.—Low grounds, various provinces, Miss. to Tex., Ariz. and Kans — Sum. 
18. C. gh d Rp F. E. Boynton. Plant 4-8 dm. tall, pid -o of 
the lower leaves entire and AE 2 mm. wide, or narrow 
lobes, m of the upper leaves narrowly linear to Slitorm, E uu mes with 
filiform lobes: outer involucral bracts lanceolate, 1—2 . lon achene elliptie, 
1.5-2 mm. long, the wing 14 as wide as the body. — Pinelands, la —Sum.—fall. 
C. Leavenworthii T. & G. Plant =e Meu tall, E blades of the 
lower leaves mostly a 2 or more Ad w lobes, usually very narrow, (or 
broad in C. Leavenworthii Garberi), of the upper leaves mostly entire 
and narrow: ii involueral braets su n -lanceolate, 1-2 mm. long: achene 
roundish o iod 2.5-3 mm. bi the wing as broad as the bo dy.— Pinelands and 
moist prairi s, pen Fla. and the Keys.—All year.—A fusion of this- 
hot in 
plant is ud externally ns the Seminoles in cases of heat prostration. 
20. C. Lewtonii Small. Plant 3-5 dm. tall: blades of the lower leaves 
2 or narrowly cuneate, m outer involueral bracts suborbicular, about 
2 mm. long: achene not seen.—Low grounds, pen. Fla.—Sum 
C. angustifolia Ait. Plant 5-7 dm. tall: blades of the lower leaves 
eA or oblanceolate, oo | involucral bracts ovate, 2-3 mm. long: 
achene oval, 2.5-3 mm. long.—Low pinelands and swampy ' places, eee 
Plain, Fla. to Tex. and N. C.—Sum. “tal l. 
