COMPOSITE 17 



glabrous, not dotted, stem-leaves sessile, amplexicaul ; 

 Dauphiny, Piedmont. 



C. Capitules ovate; receptacle glabrous; disk-flowers 

 hermaphrodite and sterile; not alpine: A. campestris, 

 L. ; capitules in long slender racemes, yellow, drooping, 

 leaves pinnatifid ; sandy places. A. valesiaca, All.; leaves 

 tomentose, snow-white, pinnate, with narrow linear seg- 

 ments ; Southern Switzerland. 



Tribe SENECIONE/E. Flowers usually all bisexual 

 and ligulate, generally yellow ; receptacle naked ; anther- 

 cells not tailed; branches of style free in the disk- 

 flowers ; pappus-hairs usually very soft ; leaves alternate. 

 Genera 29-32. 



29. SENECIO, L. 



Capitules solitary or in corymbs ; ray-flowers female or 

 o ; branches of style with penicillate tips ; pappus-hairs 

 soft, slender, deciduous; involucral bracts in one row, 

 sometimes with a short outer involucre. 



The following English lowland species are found also 

 in Switzerland, &c. : 5". vulgaris, L., Groundsel ; syl- 

 vaticus, L., a somewhat larger foetid plant ; Jacobcza, L., 

 Ragwort; vtscosus, L., a viscid plant with broad leaves; 

 erucifolius, L., pubescent, with simply pinnatifid leaves ; 

 aquaticus, Huds. (including barbarecefolius^ Krock.) ; and 

 paludosus, L., both in wet places, the former with divided, 

 the latter with undivided cottony leaves. The remaining 

 species are mostly alpine. 



A. Capitule with an outer involucre of small bracts; 

 leaves simply or doubly pinnatifid: S. abrotanifolius, L. ; 



flowers orange-yellow, leaves bi-pinnate (upper simply 

 VOL. II. B 



