KEY. 285 



axillary and terminal; Stem-leaves oblong or lanceolate, 

 partly clasping, the uppermost rigid, minute, the lowest and 

 radical ones ruucinate. Cichorium Intybus, L. 



991. Outer pappus of 5 broad chaffy scales, the inner of 

 as many alternate, slender bristles. Heads small, terminat- 

 ing the scapes and branches. Leaves chiefly radical, lyrate 

 and toothed, sometimes roundish ; the other leaves narrower. 



Krigia Virginica, Willd. 



Outer pappus of numerous, very smally bristle- 

 chaffy scales, the inner of many long, capillary bristles. 

 Heads rather showy, single at the summit of the scapes or 

 naked peduncles. Cynthia. 



993. Pappus bright white 997 



Pappus reddish, tawny, or dirty white 993 



993. Flowers yellow 994 



Flowers bluish, or cream-color turning bluish. 

 Achenia contracted above into a short neck or beak. Leaves 

 irregularly pinnatifid, sometimes, or rather often, runcinate, 

 coarsely toothed (the upper ones undivided). . Heads in a 

 large compound panicle. Herb tall and stout, 3-12 feet high. 

 Mulgedium leucopheeum, D. C. (998). 



994. Achenia not beaked 995 



Achenia long-beaked, nearly terete. Pappus soft. 

 Heads solitary, terminal on both stem and branches, rather 

 large. Leaves oblong or lanceolate, entire, cut, or pinnatifid; 

 those of the stem sessile and somewhat clasping. • 



Pyrrhopappus Caroliuianus, D. C. 



995. Flowers whitish, rose-purple, or purplish 996 



Flowers yellow. Stems sometimes scape-like. 



Leaves entire, or toothed. Heads single, or panicled ; flow- 

 ers yellow. Hieracium. 



{Sawk-weed.) 



996. Flowers rose-purple, about 5 in each head. Stem 

 almost leafless, scape-like, erect, slender, once or twice 

 forked above. Leaves linear-subulate._ Heads few, erect, on 

 long peduncles. Radical leaves 6-10 inches long. 



Lygodesmia juncea, Don. 



