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. L,eafy Stemmed False Dandelion. 



(Fig. 3551. ) 



Leontodon CarolinianumWaXt. Fl. Car. 192. 1788. 

 S". Caroliniana'&.z.l. NewFl. N. A. Part4, 85. 1836. 

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



Glabrous or nearly so; stern 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, Y-S / long, )4 / -i}4 / wide, 

 narrowed into margined petioles; stem leaves 

 sessile or partly clasping, the upper usually 

 lanceolate, entire and acuminate; peduncles 

 usually puberulent; heads 1 or several, \'-\% f 

 broad; involucre commonly puberulent or pu- 

 bescent, about i / high, its outer bracts setaceous 

 or subulate, spreading, the inner corniculate at 

 the apex; achcncs 2 // -3 // long, tipped with a fili- 

 form beak of about three times their length. 



In dry fields, Delaware to Florida, Missouri, Lou- 

 isiana and Texas. April-July. 



2. Sitilias grandiflora (Nutt. ) Greene. 

 Rough False Dandelion. (Fig. 3552.) 



Barkhausia grandiflora Nutt. Journ. Phila. Acad. 



7: 69. 1834. 

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

 Sitilias grandiflora Greene, Pittonia, 2: 180. 1891. 



Hirsute or pubescent. Root tuberous-thick- 

 ened; leaves all basal, oblong or spatulate in 

 outline, deeply pinnatifid, $'-]' long, i'-i^' 

 wide, narrowed into margined petioles; scape 

 naked or sometimes with a small leaf near its 

 base; head solitary, i / -2 / broad; outer bracts of 

 the involucre small, short, subulate, the inner 

 ones obscurely corniculate at the tip. 



On prairies, Kansas to Texas. 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 1 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, 10-20-ribbed or nerved, not transversely rugose, 

 narrowed at the base and apex, beakless in 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 1 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 10-striate. 

 Involucre 4" -6" high; achenes 13-striate. 

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

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

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



Besides the following, about 10 others 



C. pulchra. 

 C. glaitca. 



3. C. runcinala. 



4. C. tectorum. 



5. C. virens. 



6. C. biennis. 



7. C. intermedia. 



8. C. occidental is' 



