Vol. III.] 



CHICORY FAMILY. 



279 



Stem leafy, usually branched; plant glabrous, or nearly so. 

 :Scape naked, monocephalous; plant hirsute, or pubescent. 



1. S. Caroliniana. 



2. S. grandiflora. 



Sitilias Caroliniana (Walt.) Raf. Leafy Stemmed False Dandelion. 



(Fig- 3551-) 



Leontodon CaroHnianiiviWah. Fl. Car. 192. 178S. 

 6". Caro//K;<z«(T Raf. New Fl. N. A. Part4, 85. 1836. 

 Pj'rr/iopapptis CarolinianiisDC Prodr. 7:144. 1838. 



Glabrous or nearly so; stem leafy, usually 

 branched, 2°-5° high. Basal leaves oblong or 

 oblong-lanceolate, pinnatifid, lobed, coarsely 

 .dentate or some of them entire, acute, acumi- 

 nate, or obtusish, 3'-S' long, %'-iyi' wide, 

 narrowed into margined petioles; stem leaves 

 sessile or partly clasping, the upper usually 

 lanceolate, entire and acuminate; peduncles 

 usually puberulent; heads i or several, i'-i%' 

 broad; involucre commonly puberulent or pu- 

 bescent, about i' high, its outer bracts setaceous 

 or subulate, spreading, the inner corniculate at 

 the apex; achencs 2"-3"long, tipped with a fili- 

 form beak of about three times their length. 



In dry fields, Delaware to Florida, Missouri, L,ou- 

 isiana and Te.xas. April-July. 



2. Sitilias grandiflora (Nutt.) Greene. 

 Rough False Dandelion. (Fig. 3552.) 



Barkhaiisia grandiflora Nutt. Journ. Phila. Acad. 



7: 69. 1834. 

 Pyrrhopappus scaposus DC. Prodr. 7: 144. 1838. 

 Sitilias grandiflora Greene, Pittonia, 2: i8o. 1891. 



Hirsute or pubescent. Root tuberous-thick- 

 ened; leaves all basal, oblong or spatulate in 

 outline, deeply pinnatifid, 3'-/' long, I'-iyi' 

 wide, narrowed into margined petioles; scape 

 naked or sometimes with a small leaf near its 

 base; he=id solitary, i '-2' broad; outer bracts of 

 the involucre small, short, subulate, the inner 

 ones obscurely corniculate at the tip. 



On prairies, Kansas to Te.\as. April-June. 



20. CREPIS L. Sp. PI. 805. 1753. 

 Perennial or annual herbs, with alternate or basal, mostly toothed or pinnatifid leaves, 

 and small or middle-sized heads, usually paniculate or corymbose, of yellow or orange flow- 

 ers. Involucre cylindric, campanulate or swollen at the base, its principal bracts in i series, 

 equal, with a number of exterior smaller ones. Receptacle mostly flat, naked or short-fim- 

 brillate. Rays truncate and 5-toothed at the apex. Anthers sagittate at the base. Style- 

 branches slender. Achenes linear-oblong, io-20-ribbed or nerved, not transversely rugose, 

 narrowed at the base and apex, beaklessin our species. Pappus copious, of very slender white 

 bristles. [Greek, sandal; application not explained.] 

 About 180 species, natives of the northern hemisphere, 

 occur in western North America. 

 Involucre glabrous 



Involucre cylindric; plant pubescent below; introduced. 

 Involucre campanulate: plant glaucous; native, western. 

 Involucre pubescent, glandular, or canescent. 



, Foliage not canescent nor scurfy, sometimes hirsute. 



Stem naked, or with i or 2 small leaves; western, native. 

 Stems leafy; introduced annuals or biennials. 



Stem leaves narrow, revolute-margined, sessile. 

 Stem leaves lanceolate, clasping, not revolute-margined. 

 Involucre 3"-4" high; achenes lostriate. 

 Involucre ^"-6" high; achenes 13 striate. 

 Foliage cinereous, canescent, or scurfy, sometimes also hirsute. 

 Inner bracts of the involucre 5-8; flowers 5-S. 

 Inner bracts of the involucre 9-21; flowers 10-30. 



Besides the following, about 10 others 



1. C. pulchra. 



2. C. glauca. 



3- 



C. ruucinala. 



C. / eel o rum. 



. C. virens, 

 . C. biennis. 



C. intermedia. 

 C. occidental is' 



