1410. CARDUACEAE 
babe ite: 
Stem pubescent with short, stiff hai often very rough. 
Upper leaves sessile, cordate or ae 
Achenes with very short apical tec i the sinus 
broadly U-shaped. 23. S. asperrimum. 
Bo es with long apical teeth, the sinus narrowly 
aped. 24. S. integrifolium. 
MR leaves narrowed or rounded at the base, short 
pe 25. S. scaberrimum. 
Stem ES t east above, and involucral braets shaggy-hispid 
spl 
Dolac bracts appressed towards the base: leaf- 
blades relatively narrow 26. S. Gatesii. 
Involucral bracts loose and spreading: leaf-blades 
relatively broad. (. S. Mohrii. 
1. S. e L. Stem 8-26 dm. tall, often er aboy oth 
and glabrou pee blades jube to ovate, 2- 6 dm. long, dentate- RE SUC 
i n us owed into is ad petiole-like. 
bases: heads mobs involuere 1-2 c igh, 
posi than high; braets pts lanceolate 
or oval, subreniform, or the inn 
broadly spatulate or cuneate: ray-flow nus 
mostly 15-25; ligules bright yellow, 2.5—3 
em. l achen 
ong: a obovate, narrowly winged, 
lo 2 emarginate by slight pro- 
T of the w at the apex - 
PLANT.)—Prairies and moist soil, various 
provinces, Ga. to La., Ont., and Neb. Also 
naturalized E.—Sum 
. S. laciniatum L. Stem 10-35 dm. tall, 
coarsely hispid: blades of the o leaves 
ovate to elliptie in outline, 10—40 em. lon 
the segments lanceolate to linear, m re or pinnatifid, ii dilated bases of the 
petioles often pinnatifid: heads showy: involucre 2.5-3 em. high; bracts pied 
e - 
a 
rs numerous; Nue yellow, 3-5.5 e ong: ud oval-obovate 
Rie 12-15 long, the wings a forming shallow apical 
n m OMPASS- a RosIN-WEED.)—Prairies, various poni. Ala. 
Tex., S. Dak., and Ohio.—Sum 
S. reniforme Raf. Stem 8-20 dm. tall, glabrous or nearly so: blades of 
the basal leaves ovate to reniform, 10—35 em. long, obtuse, coarsely dentate, 
deeply cordate at th ee petioles longer than the blades on the lower part 
of th involuere cam , 6-8 gh; br e or broadi 
elliptie js elliptie, pn otherwise glabrous, the obtuse tips spreading or re- 
curved: ray-flo vic eral; A ules yello w, 1-1.5 em. long: ac chene E 
or orbicular-obova o long; wing-tips forming a shallow ees sinus.— 
Dry or stony soil, "Blue Ridge, N. C. and d nn shale slopes, Va.— 
4, S. compositum Michx. Stem 9-20 dm. tall, glabrous, glaucous: blades 
of the basal leaves 10—30 em. long, not conspicuously veined, mostly somewhat 
pedately parted, the segments broad; pe etioles ge than the midribs: heads 
often numerous: in d eampanulate, 7-8 m um br d ovate to broadly 
ips erec 
several; ligules bright yellow 1 mm. ong: ne a eate or cuneate- 
| obovate, 7—9 mm. long, the wing- tips broad, erose, pests a U-shaped ae 
si poen] wood and pinelands, Coastal Plain and adj. provinces, Ga. to Ala., 
Tenn., and N. C.—Sum.—fall. 
