GENUS 20. 



CHICORY FAMILY 



2. Sitilias grandiflora (Nutt.) Greene. 

 Rough False Dandelion. Fig. 4085. 



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-thickened. 

 Leaves all basal, oblong or spatulate in outline, 

 deeply pinnatifid, 3'-?' long, i'-ii' 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 cornicu- 

 late at the tip. 



On prairies, Kansas to Texas. April-June. 



21. CREPIS L. Sp. PI. 805. 1753. 



Perennial, biennial 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 

 flowers. 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- 

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

 branches slender. Achenes linear-oblong, io-2o-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 200 species, natives of the northern hemisphere. Besides the following, about 20 others 

 occur in western North America. Type species : Crepis tectorv.m L. 



Involucre glabrous. 



Involucre cylindric; plant pubescent below; introduced. i. C.pulchra. 



Involucre campanulate ; plant glaucous ; native, western. 2. C. glauca. 



Involucre pubescent, glandular, or canescent. 



Foliage not canescent nor scurfy, sometimes hirsute. 



Stems naked, or with i or 2 small leaves ; western, native. 3. C. runcinata. 



Stems leafy ; introduced annuals or biennials. 



Stem leaves narrow, revolute-margined, sessile. 4. C. tectorum. 



Stem leaves lanceolate, clasping, not revolute-margined. 



Involucre 3"~4" high; achenes lo-striate. 5. C. capillaris. 



Involucre 4 "-6" high; achenes i3-striate. 6. C. biennis. 



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



Inner bracts of the involucre 5-8 ; flowers 5-8. 7. C. intermedia. 



Inner bracts of the involucre 9-24; flowers 10-30. 8. C. occidentaks. 



i. Crepis pulchra L. Small-flowered Hawks- 

 beard. Fig. 4086. 



Crepis pulchra L. Sp. PI. 806. 1753. 



Annual; stem 2-4* high, leafy and pubescent 

 below, mostly glabrous, naked, and paniculately 

 branched above. Stem leaves oblong or oblong- 

 lanceolate, dentate, clasping by an auricled base or 

 truncate, pubescent, 3^-4' long, acute or obtuse, or 

 the uppermost lanceolate, acuminate and entire ; 

 basal leaves runcinate, narrowed into petioles ; heads 

 very numerous, about 3" broad, in a large naked 

 panicle; involucre narrow, cylindric, glabrous, about 

 5" high, its principal bracts 12-15, linear, acuminate, 

 the outer ones very short, ovate, appressed ; achenes 

 linear, faintly lo-nerved, slightly narrowed above. 



Along railroad near Culpepper, Virginia, very abun- 

 dant in 1890. Naturalized or adventive from Conti- 

 nental Europe. May-July. 



